GEOLOGICAL SURVEY CIRCULAR 306 

STRATIGRAPHIC SECTIONS OF THE 

PHOSPHORIA FORMATION IN 

UTAH, 1949-51 

UNITED STATES DEPARTMENT OF THE INTERIOR 

Douglas. McKay, Secretary 

GEOLOGICAL SURVEY 

W. E. Wrather, Director 

GEOLOGICAL SURVEY CIRCULAR 306 

STRATIGRAPHIC SECTIONS OF THE PHOSPHORIA FORMATION 

IN UTAH, 1949-51 

By T. M. Cheney, R. A. Smart, R. G. Waring, and M.A. Warner 

This report concerns work done on 

behalf of the U. S. Atomic Energy 

Commission and is published with 

the permiBBion of the Commission. 

Washington, D. C .. ,l953 

Free on appliration to the Geological Survey, Washington 25, D. C. 

STRATIGRAPHIC SECTIONS OF THE PHOSPHORIA FORMATION 

IN UTAH, 1949-51 

By T. M. Cheney, R. A. Smart, R. G. Waring, and M. A. Warner 

CONTENTS 

Lot no. Page Lot no. Page 

Introduction ........................ 1 Tables of stratigraphic 

Acknowledgments ................... 1 sections-Continued 

Stratigraphy of the Phosphoria North Crawford ................ 1292 7 

and Park City formations Devils Slide ................... 1345 11 

in Utah .......................... 4 Franson Canyon ...... , ........ 1347 18 

Stratigraphic sections ............... 4 Horseshoe Canyon ............. 1339 22 

Selected bibliography ............... 4 Fort Douglas ........... : ...... 1350 25 

Tables of stratigraphic Sols Canyon ................... 1348 32 

sections Strawberry Valley ............. 1371 35 

Laketown Canyon .............. 1290 5 Little Diamond Creek .......... 1376 40 

ILLUSTRATIONS 

Page 

Figure 1. Outcrops of the Phosphoria and Park City formations in Utah and localities sampled.............. 2 

2. Generalized section of the Phosphoria formation at Brazer Canyon, Utah, lot no. 1203 . . . . . . . . . . 3 

INTRODUCT~ON 

As part of a comprehensive investigation of the 

phosphate deposits of the western field begun in 1947, 

the U. S. Geological Survey has measured and sampled 

the full thickness of the Permian Phosphoria formation 

and its partial correlative, the Park City formation, 

at many localities in Utah and other western states. 

Although these data will not be fully analyzed for 

several years, segments of the data, accompanied 

by little or no interpretation, are published as preliminary reports as they are assembled. This report, 

which contains abstracts of the sections measured in 

northeastern Utah (fig. 1) in 1949, 1950, and 1951, is 

one of this series and the second report of data gathered 

in Utah. The field and laboratory procedures adopted 

in these investigations are described rather fully in 

a previous report (McKelvey and others, 1953a). 

A large number of people have taken part in this 

investigation. The program of which this work is a 

part was organized by V. E. McKelvey and the field 

program was supervised by R. W. Swanson. R. P. Sheldon 

assisted in the location and selection of sample localities and F. J. Anderson, McKelvey, Sheldon, and 

H. W. Peirce participated in the description of strata 

and the collection of samples referred to in this report. 

T. K. Rigby assisted in the preparation of trenches and 

the crushing and splitting of samples in the field. The 

laboratory preparation of samples for chemical analysis 

was done in Denver, Colo., under the direction of 

W. P. Huleatt. · 

1 

The P 20 5 and acid-insoluble analyses were 

made in part in the Trace Elements Section laboratory 

of the Survey in Denver, Colo., under the direction 

of L. F. Rader, by chemists M. Appling, J. Dufour, 

N. Jammer, H. Miskowiec, N. Morris, and M. Stevens 

and in part for the Survey by the U. S. Bureau of Mines 

at the Northwest Electrodevelopment Laboratory, 

Albany~ Oreg., under the direction of S. M. Shelton 

and M. L. Wright. The Ah03, Fe203, and loss-onignition analyses were made in the Trace Elements 

Section laboratory, in Washington, D. C., under the 

direction of J. C. Rabbitt, by H. Alberty, T. Farley, 

C. Hoy, F. Grimaldi, and M. Landers. 

Compilation of the data has been largely by 

K. S. Bergman llifder the supervision ofR. W. Swanson. 

Organization of the tabular data has been by Anita Wise. 

ACKNOWLEDGMENTS 

Special thanks are due J. Steele Williams and 

A. A. Baker who have given much advice and many 

suggestions in the field. The cost of these investigations has been borne partly by the Division of Raw 

Materials of the Atomic Energy Commission. 

It is a pleasure to acknowledge the fine cooperation extended to the field parties by the local residents 

and property owners who furnished· information and 

services and gave access to property. Special thanks 

are due the American Smelting and Refining Co. for permission to sample the open-pit mine under their lease. 
M 

I 

I 

l ' 

jl 

• ~1~9° ~·,.·{1213 1244 1 ~2 

1203 • 

I 

122871 

110" 

,1346 

109" 

UTAH 

Outcrop of Phosphori·a formation, dotted 

where questionable 

0 ill2 

Location and lot number of sample locality 

included in this report 

0 1220 

Location and lot number of sample locality 

included in other -reports 

I . ~ ~ 

t 

I SA~~E 1350 == I - ' " WYOMING I -'--/ CITY ;. ~ .- UTAH I I COLORADO •• 

41

• 

112" 

.1. _, i ' 1 PARK CITY 

f I 

I ) 

~7 "JPROVO ' 

\~1271 

/ 

1270 

1376 

"-.. 

' ,1371 

111" 

_..... 

_., 

,.. ~"( 1221 

-... \~ ~ ... 1219 

1220 

1231 1229 

.. ~~ -........,d "1235 

OVERNAL 

10 0 40MILES 

Recompiled and m~ied from Clabaugh, 1946 

110" 

Figure 1. -Outcrops of the Phosphoria and Park City formations in Utah and localities sampled. 

• • I 

I 

I 

I 

I 

I 

I 

I 

109" 
FEET 

30 

0 

100 

160 

2 

3 

4 

PERCENT ~ Oe 

20 10 0 

LITHOLOQ'( THICKNESS 

IN FEET 

35 

AVE II AU 

PlOD IN 

PERCEI'I' 

DESCRIPTION 

Dinwoody formation 

Phosphoria formation 

fossiliferous 

• Dolomite aod chert: 60 percent is medium-hard, medium-gray, massive dolomite; 

40 percent is bard, black, nodular, thick-bedded chert 

17 Dolomite: bard, medium-gray, massive; contains chert nodules 

33 Dolomite: · argillaceous, bard, medium-gray, massive 

0 

Limestone aod chert: 50 percent is bard, black, nodules, lenses, and irregular 

masses of chert; 50 percent is hard, dark-gray, thick-bedded limestone 

P bosphatic shale member 

Mudstone: 40 percent is calcareous, bard, medium, brownish-gray, thin-bedded; 

60 percent is dolomitic, bard, brownish-gray, thin-beddC)<.I 

Mudstone and phosphate .rock; 70 percent is calcareous, soft, brown, thickbedded mudstone; 30 percent is argillaceous, medium-bard, grayish-brown 

thick-bedded, phosphate rock 

Wells formation 

Figure 2. -Generalized section of the Phosphoria formation at Brazer Canyon1 Utah1 lot no. 1203. 

3 
STRATIGRAPHY OF THE PHOSPHORIA AND PARK 

CITY FORMATIONS IN UTAH 

The stratigraphy of the Permian Phosphoria 

formation in the Crawford Mountains of northeastern 

Utah, near th~ Idaho-Wyoming cor:ner, is very similar 

to that in the adjacent states and described in compa.nirm 

reports (McKelvey and others, 1953a, 1953b). It consists of the phosphatic shale member, about 210 feet 

thick, and the Rex chert member, for which this is 

the type locality, about 220 feet thick. The upper 

shale member, present in the adjacent region to the 

north, is not well defined in this area. Here, as well 

as to the north, the Phosphoria formation overlies the 

Pennsylvanian Wells formation, the upper part of which 

consists chiefly of cherty gray limestone with some 

thin phosphatic layers. The Phosphoria. is overlain 

by the Triassic Dir.woody formation, consisting of 

limestone, calcareous siltstone, anc~ sandstone. A generalized section of the Phosphoria formation at Brazer 

Canyon is shown in figure 2. 

Farther south, along both the north and south 

flanks of the Uinta. Ra.r.ge and in the general area of the 

Wasatch Range, the Park City formation is the partial 

stratigraphic equivalent of the Phosphoria formation. 

At Park City, its type locality, it is about 590feet thick 

and cor.sists of a lower limestone member, which may 

be stratigraphically equivalent to the upper part of the 

Wells formation in southeastern Idaho; a middle shale 

member (phosphatic but containing no high-grade phosphate beds) probably equivalent in major part to the 

phosphatic shale of Idaho; and an upper limestone 

member, equivalent to the Rex chert member to the 

north. Eastward the lower limestone member thins 

out and the middle shale and upper limestone members 

thin, are more clastic, and finally tongue out into 

4 

nonmarine redbeds in eastern Utah and western Colorado. 

Westward the formation thickens markedly, attaining 

a thickness of several thousand feet, and contains a 

greater proportion of chemical precipitates. 

More detailed correlations of the strata within 

Utah as well as between Utah and adjacent states will 

be discussed in subsequent publications. 

STRATIGRAPHIC SECTIONS 

Analytical data and abstracts of stratigraphic 

sections measured at nine localities follow. Their locations as well as the locations of sections previously 

reported (Smith and others, 1953) are shown in figure 1. 

SELECTED BIBLIOGRAPHY 

Clabaugh, P. S., 1946, Permian phosphate deposits 

of Montana., Idaho, Wyoming, and Utah: U. S. 

Geol. Survey, Strategic Minerals Inv. Prelim. 

Map 3-198. 

McKelvey, V. E., Davidson, D. F., O'Malley, F. W., 

and Smith, L. E., 1953a, Stratigraphic sections 

of the Phosphoria. formation in Idaho, 1947-48, 

pt. 1: U. S. Geol. Survey Circ. 208. 

McKelvey, V. E., Smith, L. E., Hoppin, R. A., 

and Armstrong, F. C., 1953b, Stratigraphic 

sections of the Phosphoria. formation in Wyoming, 

1947-48: U. S. Geol. Survey Circ. 210. 

Smith, L. E., Hosford, G. F., Sears, R. S., 

Sprouse, D. P., and Stewart, M. D., 1953, 

Stratigraphic sections of the Phosphoria formation 

in Utah, 1947-48: U. S. Geol. Survey Circ. 211. 
01 

Laketown Canyon. Utah. lot 1290 

Phosphatic shale member of Phosphoria formation sampled in bulldozer trench. sec. 32. T. 13 N .• R. 6 E .• Rich County. Utah. on an early Tertiary 

surface exhumed by. erosion of the covering Wasatch formation. Phosphoria extensively leached by pre-Wasatch erosion. Beds strike N. 10• E. 

and dip 65• W. Section measured by R. P. Sheldon. F. J. Anderson. and R. G. Waring and sampled by Waring in July 1949. Samples analyzed for 

5 and acid insoluble by U. S. Bureau of Mines laboratory. Albany. Oreg .• and for other constituents by Trace Elements Section laboratory. 

wasfiington. D. C. 

Bed Rock d'escription Sample Thickness Chemical analyses (percent) Cumulative Thickness x 

I I •I Loss on I 

Acid thickness percent P 2o no. no. (feet) 5 P2°s Al203 Fez0 3 ignition insoluble (feet) (cumulative) 

Rex chert member of Phosphoria formation-basal bed only 

R- 1 (Chert ----------------------------------1 3793- RPS I 0. 8 I 1. 2 I -~-=~~~~ -~~::~- ] 90. 7 I 0. 8 J 

Phosphatic shale member of Phosphoria formation 

P-58 Mudstone. phosphatic ------------------- 3792- RPS 0.3 11. 0 -- -- -- 63.3 0. 3 3.30 

P-57 Mudstone------------------------------- 3791- RPS 2.6 1.6 -- -- -- 75.8 2. 9 7.46 

P-56 Mudstone------------------------------- 5190- RPS 1.0 5. 8 -- -- -- 64.0 3.9 13.26 

P-55 Phosphate rock ------------------------- 3789- RPS 1.0 35.8 0.99 0. 71 2. 18 4.0 4.9 49.06 

P-54 Mudstone and argillaceous phosphate 

rock---------------------------------- 3787- RPS 1.5 9.0 8. 2 3.95 4. 26 59. 5 6.4 62.56 

P-53 Phosphate rock ------------------------- 3877- FJA 1.0 31. 0 3. 1 l. 93 4. 10 11. 7 7. 4 93.56 

P-52 Mudstone. phosphatic ------------------- 3876- FJA . 9 15. 6 7.0 3.08 4.80 42.9 8. 3 107.60 

P-51 Phosphate rock ------------------------- 3875- FJA 1.9 33.5 1.2 .43 3.62 7.4 10.2 171. 25 

P-50 Phosphate rock ------------------------- 3874- FJA . 5 36.3 1.3 .43 3. 14 3.5 10. 7 189.40 

P-49 Phosphate rock ------------------------- 3873- FJA 1.4 31.4 2. 1 .92 3.74 12. 7 12. 1 233.36 

P-48 Phosphate rock ------------------------- 3872- FJA 1.3 36.5 .92 . 63 3.24 2. 2 13.4 280.81 

P-47 Phosphate rock ------------------------- 3871- FJA 1.2 35. 2 1.3 .37 3. 78 4.7 14.6 323.05 

P-46 Phosphate rock. argillaceous ------------ 3870- FJA . 7 27.5 4.3 1. 27 4.20 20. 7 15.3 342.30 

P-45 Phosphate rock. argillaceous ------------ 3869- FJA . 6 25.6 3. 6 . 67 5.80 22.0 15.9 357.66 

P-44 Mudstone and phosphate rock ------------ 3868- FJA . 9 21. 5 6.0 2.08 6.24 27.2 16.8 377.01 

P-43 Phosphate rock. argillaceous ------------ 3867- FJA . 9 16.4 6. 6 2.60 7.02 37. 1 17. 7 391.77 

P-42 Phosphate rock. argillaceous ------------ 3866- FJA 1.0 24.2 4.5 1. 91 6.36 22.7 18. 7 415.97 

P-41 Phosphate rock ------------------------- 3865- FJA . 8 29.8 2. 6 1. 56 6.84 8. 3 19. 5 439.81 

P-40 Phosphate rock ------------------------- 3864- FJA . 7 30.4 2. 7 . 71 5. 18 11.3 20. 2 461. 09 

P-39 Phosphate rock, argillaceous ------------ 3863- FJA 1.5 22.3 5.2 4.00 4.44 28.5 21. 7 494.54 

P-38 Phosphate rock, argillaceous ------------ 3862- FJA 2.0 21.9 5. 5 2. 14 4.34 j2.Z 23. 7 538.34 

P-37 Phosphate rock, argillaceous ------------ 3861- FJA 1.0 24.9 4.8 1. 20 4.34 25.5 24. 7 563.24 

P-36 Phosphate rock, argillaceous ------------ 3860- FJA 2.2 19.2 6. 1 3. 15 4.40 36.9 26.9 605.48 

P-35 Mudstone. phosphatic-------------------- 3859- FJA 1.5 11.5 -- -- -- 53.8 28.4 622.73 

P-34 Mudst..:>ne. phosphatic-------------------- 3858- FJA 1. 8 13.5 -- -- -- 51.8 30.2 647.03 

P-33 Mudstone------------------------------- 3857- FJA 2.5 1.3 -- -- -- 83.7 I 32.7 650.28 
~ 

Laketown C anyon-e ontinued 

Bed Sample Thickness Chemical analyses (percent) 

Rock description Loss on Acid no. no. (feet) P2os Al2o3 Fe2o3 ignition insoluble 

P-32 Mudstone, phosphatic-------------------- 3856- FJA 1.1 11. 3 -- -- -- 54.4 

P-31 Phosphate rock ------------------------- 3855- FJA 1. 2 33.2 -- -- -- 8.3 

P-30 Mudstone------------------------------- 3854- FJA 1. 6 6.9 -- -- -- 66. 1 

P-29 Mudstone---------~--------------------- · 3853- FJA 3.5 2. 5 -- -- -- 80.0 

P-28 Phosphate rock, argillaceous ------------ 3852- FJA 1.7 27.3 -- -- --. 18.3 

P-27 Mudstone------------------------------- 3851- FJA 1.8 5. 3 -- -- -- 69.9 

P-26 Phosphate rock ------------------------- 3772- RPS .85 27. 7 -- -- -- 15.0 

P-25 Mudstone ------------------------------ -- ? -- -- -- -- -- P-24 Mudstone, phosphatic ------------------- 3771- RPS 1.5 1 o. 5 -- -- -- 54. 6. 

P-23 Phosphate rock ------------------------- 3770- RPS 1.0 29.5 -- -- -- 13. 7 

P-22 Phosphate rock, argillaceous ------------ 3769- RPS 1.6 19. 1 -- -- -- 32.8 

P-21 Mudstone, phosphatic ______________ _: ____ 3768- RPS 2.0 9. 7 -- -- -- 58.0 

P-20 Phosphate rock, argillaceous ------------ 3767- RPS 2.0 23. 1 -- -- -- 30.7 

P-19 Phosphate rock ------------------------- 3788- RPS 1.6 28.3 -- -- -- 16.0 

P-18 Phosphate rock, argillaceous ---------"':'-- 3766- RPS . 9 19.8 -- -- -- 38.6 

P-17 Mudstone------------------------------- 3765- RPS 1. 6 3. 8 -- -- -- 76.4 

P-16 Mudstone------------------------------- 3764- RPS 4.0 1.1 -- -- -- 81.5 

P-15 Phosphate rock ------------------------- 3763- RPS 1.0 34.5 -- -- -- 6.8 

P-14 Mudstone----------------~-------------- 3786- RPS 5.0 4. 1 -- -- -- 71. 6 

P-13 Mudstone------------------------------- 3785- RPS 5.0 3. 7 -- -- -- 69. 7 

P-12 Mudstone------------------------------- 3784- RPS 4.5 6.7 -- -- -- 62.2 

P-11 Phosphate rock and mudstone------------- 3783- RPS . 5 23.9 6.2 2.52 4.04 28.0 

P-10 Mudstor:e, phosphatic ------------------- 3774- RPS • 8 17. 3 6.9 2. 76 3.68 44.0 

P- 9 Phosphate rock, argillaceous ------------ 3773- RPS . 7 17.6 6.2 2.43 4.30 41.4 

P- 8 Phosphate rock and mudstone ------------ 3832-RGW 2.3 19. 1 6. 7 2.37 4.18 39. 1 

P- 7 Phosphate rock, argillaceous ------------ 3831-RGW 1.7 22.7 5. 1 1. 58 5.46 28.2 

P- 6 Mudstone------------------------------- 3830-RGW .6 7. 5 12. 7. 15 6.58 53.9 

P- 5 Phosphate rock, argillaceous ------------ 3829-RGW 1.5 18. 5 6.9 3.88 5.58 34.4 

P- 4 Phosphate rock, argillaceous ------------ 3828-RGW 1. 0 23. 1 4.9 3.61 4.90 25.4 

P- 3 Phosphate rock, argillaceous ------------ 3827-RGW 2.4 27.6 4.4 1. 54 5.08 16.2 

P- 2 Phosphate rock and mudstone ------------ 3826-RGW 1.2 19. 1 6. 2 3.83 4.80 35.0 

P- 1 Phosphate rock, argillaceous ------------ 3825-RGW 1.5 18. 7 6. 2 6.30 4.80 35. ·o 

Wells formation- upper part only 

Cw-1 Mudstone------------------------------- 3824-RGW 1. 3 2. 2 -- -- -- 83.0 

Cw-2 Sandstone, cherty ----------------------- 3823-RGW 1.2 2.0 -- -- -- 86.2 

Cw-3 Sandstone, cherty ----------------------- 3822-RGW 2.7 1. 3 -- -- -- 86.2 

Cw-4 Sandstone, cherty ----------------------- 3821-RGW 1. 4 1. 3 -- -- -- 84.9 

* Cumulative data incomplete because of missing information. Cumu1atives start from zero after interruption. 

** Note incompleteness of cumulative data. 

Cumulative Thickness x 

thickness percent P 2o 5 (feet) (cumulative) 

33.8 662. 71 

35.0 702.55 

36.6 713.59 

40. 1 722. 34 

41.8 768.75 

43.6 778.29 

44.45 801.84 

-- -- 45.95 *15. 75 

46.95 45.25 

48.55 75.81 

50.55 95.21 

52.55 141.41 

54. 15 186.69 

55.05 204.51 

56:65 210.59 

60.65 214.99 

61.65 249.49 

66.65 269.99 

71.65 288.49 

76. 15 318.64 

76.65 330.59 

77.45 344.43 

78. 15 356.75 

80.45 400.68 

82.15 439.27 

82.75 443.77 

84.25 471.52 

85.25 494.62 

87.65 560.86 

88.85 583.78 

**90.35 **611. 83 

1.3 2.86 

2. 5 5.26 

5. 2 8.77 

6. 6 10.59 
--.::1 

North Crawford, Utah, lot 1292 

Phosphoria formation sampled in bulldozer trench in North Crawford Mountains, sec. 32, T. 12 N., R. 8 E., Rich County, Utah, on the west limb of 

the Crawford syncline. Section measured by V. E. McKelvey, R. G. Waring, M. A. Warner, and R. A. Smart and sampled by Waring, 

Warner, and Smart in July 1949. Samples analyzed for P 2_95 and acid insoluble by U. S. Bureau of Mines laboratory, Albany, Oreg., and for 

other constituents by Trace Elements Section laboratory, washington, D. C. 

Bed Sample Thickness Chemical analyses (percent) Cumulative Thickness x 

Rock description I I I Loss on I Acid thickness percent P 20 no. no. (feet) P z0 s Al203 Fe203 ignition insoluble (feet) {cumulativef 

Phosphatic shale member of Phosphoria formation 

P-104 Mudstone, carbona tic------------------- 3843-MAW 5.7 0.6 -- -- -- 57.2 5. 7 3. 42 

P-103 Mudstone, carbona tic------------------- 3842-MAW 5.9 . 6 -- -- -- 52. 7 11. 6 6.96 

P-102 Mudstone, carbona tic------------------- 3933-VEM 2.8 . 7 -- -- -- 63.0 14.4 8.92 

P-101 Phosphate. rock, argillaceous------------ 3932- VEM 1.4 17. 1 -- -- -- 35.7 15.8 32.86 

P-100 Carbonate rock, argillaceous, and 

argillaceous phosphate rock------------ 3931- VEM 1.5 9. 1 -- -- -- 32.0 17.3 46.51 

P- 99 Mudstone, phosphatic------------------- 3930-VEM . 9 8. 3 -- -- -- 51.3 18.2 53.98 

P- 98 Phosphate rock ------------------------ 3929- VEM 1. 8 32.3 0.74 0.67 5.86 3,7 20.0 112. 12 

P- 97 Phosphate rock ------------------------ 3928-VEM 1.4 32.8 .49 .43 6.44 2.0 21.4 158.04 

P- 96 Phosphate rock, argillaceous, and 

phosphatic mudstone ------------------ 3927-VEM . 5 19.9 3.9 1. 21 7.40 29.8 21. 9 167.99 

P- 95 Phosphate rock -----------'------------- 3926- VEM 1.2 30.3 . 49 . 50 9.04 2.4 23. 1 204.35 

P- 94 Phosphate rock, phosphatic mudstone, 

and carbonatic phosphate rock --------- 3925-VEM .9 27.3 2.5 1. 20 5.92 15. 1 24.0 228.92 

P- 93 Phosphate rock -------------------"'----- 3924-VEM 1.7 29.4 1.4 . 38 6. 78 9.3 25.7 278.90 

P- 92 Phosphate rock ------------------------ 3923- VEM .9 27. 7 2.7 . 82 4.80 19. 7 26.6 312. 14 

P- 91 Phosphate rock, argillaceous ----------- 3922-VEM 1.3 19. 0 3.4 1. 27 9.26 27.0 27.9 331.14 

P- 90 Mudstone, carbonatic-----------------•- 3921-VEM 2.8 2.6 6. 1 1.94 19.40 47.3 30.7 338.42 

P- 89 Phosphate rock ------------------------ 3841-MAW 2.0 25. 6 3. 3 1. 00 4.34 23.4 32.7 389.62 

P- 88 Phosphate rock ------------------------ 3840-MAW .9 27.2 2. 1 3.63 4.38 18.7 33.6 414.10 

P- 87 Phosphate rock, argillaceous------------ 3839-MAW 1.8 22.0 4.2 1. 82 3.58 32.7 35.4 453. 70 

P- 86 Mudstone, phosphatic------------------- 3838-MAW .5 9.5 6.2 2.45 8.50 52.8 35.9 458.45 

P- 85 Phosphate rock ------------------------ 3837-MAW 1.1 27. 7 1.7 1. 60 6.00 13. 7 37.0 488.92 

P- 84 Carbonate rock ------------------------ 3836-MAW 1.2 . 7 -- -- -- 12.3 38.2 489.76 

P- 83 Mudstone, cherty ---------------------- 3835-MAW 1.2 . 9 -- -- -- 81. 1 39.4 490.84 

P- 82 Phosphate rock, argillaceous, 

carbonatic --------------------------- 3834-MAW 1.4 17. 3 -· -- -- -i 9. 1 40.8 515.06 

P- 81 Mudstone, carbonatic ------------------ 3833-MAW 3.0 2. 3 -- -- -- 44.0 43.8 521.96 

P- 80 Mudstone, carbonatic ------------------ 3986-RGW 1.9 4.0 -- -- -- 55.3 45.7 529.56 

P- 79 Mudstone------------------------------ 3985-RGW . 5 2.3 -- -- -- 75.5 46.2 530.71 

P- 78 Mudstone and phosphate rock------------ 3984- RGW . 7 14.9 -- -- -- 38.3 46.9 541. 14 

P- 77 Carbonate rock, argillaceous------------ 3983-RGW • 6 . 5 -- -- -- 22.3 47.5 541.44 
North Crawford-Continued 

Bed Sample Thickness Chemical analyses (percent) Cumulative Thickness x 

no. Rock description no. (feet) P205 Al2o3 Fe2o3 

Loss on Acid thickness percent P 2o5 ignition insoluble (feet) (cumulative) 

P-76 Mudstone, phosphatic, carbonatic--------- 3982-RGW 0.5 10. 3 -- -- -- 36.3 48.0 546. 59 

P-75 Mudstone, carbona tic-------------------- 3981-RGW 1. 8 1.7 -- -- -- 52.3 49.8 549.65 

P-74 Phosphate rock, argillaceous------------- 3980-RGW 1.1 25.6 -- -- -- 16.3 50.9 ~77.81 

P-73 Carbonate rock, argillaceous, 

phosphatic----------------------------- 3979-RGW 1. 6 8.5 -- -- -- 24.5 52. 5 591. 41 

P-72 Carbonate rock ------------------------- 3940-VEM 3.2 . 4 -- -- -- 6. 3 55. 7 592.69 

P-71 Mudstone, carbona tic-------------------- 3939-VEM . 3 5.2 -- -- -- 56.2 56.0 594.25 

P-70 Mudstone------------------------------- 3938-VEM . 3 . 4 -- -- -- 78.9 56.3 594.37 

P-69 Mudstone------------------------------- 3937-VEM . 5 . 2 -- -- -- 71.5 56.8 594.47 

P-68 Mudstone------------------------------- 3936-VEM . 3 . 2 -- -- -- 75.3 57.6 594.63 

P-67 Mudstone------------------------------- 3935-VEM 1. 0 5. 7 -- -- -- 65. 1 58.6 600.33 

P-66 Mudstone, carbona tic ------------------- 3934-VEM 2.2 1.1 -- -- -- 52.8 60.8 602.75 

P-65 Mudstone, phosphatic ----------------·--- 3848- RAS . 6 11.4 -- -- -- 53.3 61.4 609.59 

P-64 Mudstone------------------------------- 3847- RAS 1.2 . 9 -- -- -- 77.3 62.6 610.67 

P-63 Mudstone, carbonatic ------------------- 3846- RAS 1.9 . 7 -- -- -- 59.8 64.5 612.00 

P-62 Mudstone, phosphatic ------------------- 3845- RAS . 6 10.8 -- -- -- 50.2 65. 1 618.48 

(X) P-61 Mudstone, phosphatic ------------------- 3844- RAS 1. 4 11. 7 -- -- -- 48.2 66.5 634.86 

P-60 Mudstone, phosphatic ------------------- 3900- RAS 1. 8 10. 1 -- -- -- 50.2 68.3 653.04 

P-59 Carbonate rock ------------------------- 3899- RAS . 8 2. 9 -- -- -- 9.5 69. 1 655.36 

P-58 P·hosphate rock, argillaceous, 

carbonatic ---------------------------- 3898- RAS 2.5 14.7 -- -- -- 28.3 71. 6 692. 11 

P-57 Mudstone, carbonatic ------------------- 3897- RAS 1. 6 5. 1 -- -- -- 47.5 73.2 700.27 

P-56 Phosphate rock, argillaceous ------------ 3896- RAS 1.0 19. 7 -- -- -- 33.0 74.2 719.97 

P-55 Carbonate rock ------------------------- 3895- RAS .6 2. 8 -- -- -- 8. 5 74.8 721. 65 

P-54 Phosphate rock, argillaceous, 

".carbona tic ---------------------------- 3894- RAS . 8 14. 1 -- -- -- 22. 7 75.6 732.93 

P-53 Mudstone, phosphatic, carbonatic--------- 3893- RAS 1.8 10.4 -- -- -- 35.8 77.4 751. 65 

P-52 Mudstone, phosphatic and argillaceous 

limestone ----------------------------- 3892- RAS 1.7 9.4 -- -- -- 49.0 79. 1 767. 63 

P-51 Ph~~phate rock, argillaceous ------------ 3891- RAS 2.7 18.3 -- -- -- 31. 2 81. 8 817.04 

P-50 Phosphate rock, argillaceous ------------ 3890- RAS 1. 4 20.6 -- -- -- 20.9 83.2 845. 88 

P-49 Phosphate rock, argillaceous and 

mudstone ----------------------------- 3889- RAS 1.1 21. 8 -- -- -- 29. 7 84.3 869.86 

P-48 Phosphate rock ------------------------- 3888- RAS 1. 2 33. 1 -- -- -- 9.3 85.5 909.58 

P-47 Phosphate rock, argillaceous------------- 3978-RGW 1. 0 23. 7 -- -- -- 29.0 86. 5 933. 28 

P-46 Mudstone, phosphatic-------------------- 3977-RGW . 8 14.3 -- -- -- 38.3 87.3 944. 72 

P-45 Carbonate rock ------------------------- 3976-RGW 1.3 3. 1 -- -- -- 18.8 88.6 948. 75 

P-44 !4udstone------------------------------- 3975-RGW 3.3 6. 9 -- -- -- 51.3 91.9 971. 52 

..., ' 
P-43 Mudstone, carbona tic-------------------- 3974-RGW 4.7 1.6 -- -- -- 48.3 96.6 979.04 

P-42 Carbonate rock, argillaceous ------------ 3973-RGW 1.3 2.2 -- -- -- 37.3 97.9 981. 90 

P-41 Mudstone, cherty ----------------------- 3972-RGW 1.4 5. 1 -- -- -- 64. 7 99.3 989.04 

P-40 Carbonate rock, argillaceous ------------ 3971-RGW 1. 1 1. 6 -- -- -- 31.3 100.4 990.80 

P-39. Mudstone, carbonatic and limestone ------ 3970-RGW . 9 . 7 -- -- -- 21. 3 101. 3 991. 43 

P-38 Mudstone, carbonatic-------------------- 3969-RGW 10 1 2. 9 -- -- -- 58. 1 102.4 994.62 

P-37 Chert---------------------------------- 3968-RGW 0 7 3.4 -- -- -- 70.3 103. 1 997.00 

P-36 Carbonate rock, argillaceous ------------ 3967-RGW 2o0 . 8 -- -- -- 22.8 105. 1 998.60 

P-35 Chert and calcareous chert -------------- 3966-RGW . 6 2. 6 -- -- -- 77. 7 105. 7 1, 000. 16 

P-34 Chert---------------------------------- 3965-RGW .7 3. 1 -- -- -- 78.0 106.4 1, 002. 33 

P-33 Mudstone------------------------------- 3964-RGW 1.1 4. 7 -- -- -- 67.3 107.5 1,007.50 

P-32 Carbonate rock, argillaceous ------------ 3963-RGW 2.0 1.5 -- -- -- 31. 7 109.5 1,010.50 

P-31 Mudstone------------------------------- 3962-RGW . 9 4.5 -- -- -- 68.3 110.4 1, 014. 55 

P-30 Mudstone, phosphatic-------------------- 3961-RGW . 6 9.9 -- -- -- 56.4 111.0 1,020.49 

P-29 Mudstone, phosphatic-------------------- 3960-RGW 1. 1 11. 6 -- -- -- 53.5 112. 1 1, 033. 25 

P-28 Phosphate rock and mudstone ------------ 3887- RAS 1. 1 11. 9 -- -- -- 52.8 113. 2 1,046.34 

P-27 Mudstone, carbona tic-------------------- 3886- RAS 1.0 1.2 -- -- -- 47.3 114.2 1' 047. 54 

P-26 Phosphate rock, argillaceous------------- 3885- RAS . 6 20.5 -- -- -- 37.8 114.8 1, 059.84 

P-25 Mudstone and phosphate rock------------- 3884- RAS . 5 18.0 -- -- -- 39. 7 115. 3 1,068.84 

P-24 Phosphate rock, argillaceous------------- 3883- RAS . 5 22.3 -- -- -- 28.5 115.8 1,079.99 

co -- Carbonate rock lens--------------------- 3882- RAS (. 7) . 8 -- -- -- 14. 7 

P-23 Carbonate rock, argillaceous ------------ 3881- RAS 1. 8 1. 4 -- -- -- 28.5 117.6 1,082.51 

P-22 Mudstone, phosphatic-------------------- 3880- RAS .6 14. 1 -- -- -- 48. 1 118. 2 1, 090. 97 

P-21 Mudstone, phosphatic-------------------- 3879- RAS 1.4 14. 1 -- -- -- 52. 1 119.6 1,110.71 

P-20 Mudstone, phosphatic-------------------- 3878- RAS • 7 13. 2 -- -- -- 52. 1 120.3 1,119.95 

. P-19 Mudstone, carbonatic-------------------- 3794- RAS 1. 4 1. 5 -- -- -- 52.7 121. 7 1, 122. 05 

P-18 Phosphate rock, argillaceous------------- 3795- RAS 1. 9 27.2 2.4 1. 20 3.38 22.0 123.6 1, 173. 73 

P-17 Phosphate rock, argillaceous------------- 3796- RAS 2.5 24.8 -- -- -- 27.9 126. 1 1, 235. 73 

P-16 Phosphate rock, argillaceous------------- 3797- RAS 1.2 25. 1 2.3 .42 3.26 27.8 127.3 1, 265. 85 

P-15 Phosphate rock, argillaceous------------- 3798- RAS 1. 7 28.9 1. 8 .46 3.20 18. 7 129.0 1, 314. 98 

P-14 Phosphate rock, argillaceous ------------ 3799- RAS 1. 9 19. 1 -- -- -- 35.7 130.9 1, 351. 27 

P-13 Limestone, argillaceous----------------- 3959-RGW 1.2 4.8 1.2 • 26 25. 18 300 1 132. 1 1,357.03 

P-12 Mudstone and argillaceous phosphate rock 

- 3958-RGW . 9 19.7 3.6 • 77 5.64 35.6 133.0 1, 374. 76 

P-11 Mudstone------------------------------- 3957-RGW . 8 7.4 -- -- -- 57.0 133.8 1, 380.68 

P-10 Carbonate rock, argillaceous------------- 3956-RGW . 7 7.2 -- -- -- 37.7 134.5 1, 385. 72 

P- 9 Chert, mudstone and phosphatic mudstone 

- 3955-RGW . 8 8. 1 -- -- -- 58.2 135.3 1,392.20 

P- 8 Phosphate rock, argillaceous------------- 3954-RGW . 6 15. 7 -- -- -- 36.3 135.9 1, 401. 62 

P- 7 Carbonate rock ------------------------- 3953-RGW 1.2 1.1 -- -- -- 16.7 137. 1 1,402.94 

P- 6 Carbonate rock, argillaceous------------- 3952-RGW 1. 2 3.4 -- -- -- 28.0 138.3 1, 407. 02 

P- 5 Mudstone, carbonatic and cherty 

carbonate rock ------------------------ 3951-RGW 1.4 3. 7 -- -- -- 44.2 139.7 1,412.20 

P- 4 I Carbonate rock, argillaceous------------- 3951-RGW 1. 1 2. 1 -- -- -- 20.3 140.8 1, 414. 51 
...... 

0 

Bed 

no. 

P- 3 

-- P- 2 

P- 1 

Cw-1 

Cw-2 

Cw-3 

Cw-4 

Cw-5 

Cw-6 

Rock description 

Carbonate rock and chert----------------

Carbonate rock lens---------------------

Limestone, argillaceous and phosphate 

rock----------------------------------

Phosphate rock, argillaceous, 

carbona tic ----------------------------

Mudstone, carbonatic -------~-----------

Carbonate rock, argillaceous ------------

Carbonate rock, argillaceous ------------ Carbonate rock, argillaceous ------------

Carbonate rock-------------------------

Carbonate rock, argillaceous ------------

North Crawford-Continued 

Sample Thickness Chemical analyses (percent) Cumulative Thickness x 

no. (feet) P2o5 Al2o 3 Fe2o 3 

Loss on Acid thickness percent P 20 

ignition insoluble (feet) (cumulativef 

. 3949-RGW 1.6 2.6 -- -- -- 36.8 142.4 1,418.67 

-- (. 5) -- -- -- -- -- -- --

~948-RGW 2.4 13.8 -- -- -- 28.5 144.8 1, 451. 79 

3947-RGW . 3 18.4 -- -- -- 22.3 145. 1 1, 457.31 

wens" formation-top beds only 

3946-RGW 2. 2 2. 1 -- -- -- 49.0 2. 2 -- 3945-RGW 1.2 2. 8 -- -- -- 36.7 3.4 -- 3944-RGW" 1.0 3. 1 -- -- -- 40.7 4.4 -- 3943-RGW 2.2 -- -- -- -- -- 6. 6 -- 3942-RGW 2. 2 -- -- -- -- -- 8.8 --

3941-RGW 1.2 -- -- -- -- -- 10.0 --
...... 

...... 

Devils Slide, Utah, lot 1345 

Park City formation measured and phosphatic beds sampled in ·bulldozer trench and natural outcrop 4 miles east of Morgan in Weber 

Canyon, sec. 26(? ), T. 4 N., R. 3 E., Morgan County, Utah. The section is on the east limb of an anticline. Beds strike N. 

40• .E'. an~ dip 20• E. Section measured by M. A. Warner, T. M. Cheney, R. G. Waring, and R. A. Smart and sampled by 

T. K. Rigby, Smart, and Warner in June 1951. Samples analyzed by U. S. Bureau of Mines Laboratory, Albany, Oreg. 

Chemical analyses Cumulative Thickness x Sample Thickness (percent) thickness percent P 2of' Bed Rock description no. (feet) l AC1a (feet) (cumulative no. 

---~-- ___ P205 insoluble ---- -- --- --

Woodside shale-basal bed only 

'lt'w- 1 I Sandstone I -- I -- I -- I -- I -- I -- Uppe·r member of Park City formation 

u- 11 Carbonate rock-----------------------~-- -- 4.0 4.0 

u- 16 Covered interval ------------------------ -- 78.0 82.0 

u- 15 Carbonate rock-------------------------- -- 7.0 89.0 

u- 14 Carbonate rock-------------------------- -- 4.7 

u- 13 Covered interval --------...,--------------- -- 25.6 

93.7 

119.3 

u- 12 Carbonate rock, sandy------------------- -- 15. 1 

u- 11 Chert -----------:.. ____ ------------------ -- 3.5 

134.4 

137.9 

u- 10 Carbonate rock, s.andy and chert---------- -- 5. 8 143.7 

u- 9 Sandstone, carb.onatic ------------------- -- 6. 1 149.8 

u- 8 Carbonate rock, cherty ------------------ -- 9.6 159.4 

u- 7 Carbonate rock, cherty ------------------ -- 8.2 167.6 

u- 6 Covered interval ------------------------ -- 17.4 185.0 

u- 5 Sandstone------------------------------- -- 19.8 204.8 

u- 4 Carbonate rock; fi>s· col. nos. 

12487 and 12488 ---------------------- -- 28.0 232.8 

u- 3 Covered interval------------------------ -- 6.0 238.8 

u- z Chert ---------------------------------- -- 2. 0 240.8 

u- 1 Carbonate rock, cherty ------------------ -- 1.2 242.0 

- Phosphatic shale member of Park City formation (?) 

- P-139 Mudstone, carbonatic -------------------- -- 7.2 7.2 

P-138 Mudstone, phosphatic-------------------- 6182-RGW 3.2 10.8 53.8 10.4 34.56 

11. 7 38.14 

13. 1 43.24 

P-137 Mudstone, carbonatic -----------------.--- 6181-RGW 1.3 2.75 47.6 

P-136 Mudstone ------------------------------- 6180-RGW 1. 4 3.65 73.6 

P-135 Mudstone ------------------------------- 6179-RGW . 9 ~.70 66.0 14.0 46.58 

P-134 I Mudstone, phosphatic-------------------- 6178-RGW 1. 8 13.9 I 38.0 15.8 71.60 

1 Fossil collection made by J. E. Smedley, Paleontology and Stratigraphy Branch, U. S. Geological Survey. 
I-' 

C\:) 

Bed 

no. 

P-133 

P-132 

P-131 

P-130 

P-129 

P-128 

P-127 

P-126 

P-125 

P-124 

P-123 

P-122 

P-121 

P-120 

P-119 

P-118 

P-117 

P-116 

P-115 

P-114 

P-113 

P-112 

P-111 

P-110 

P-109 

P-108 

P-107 

P-106 

P-105 

P-104 

P-103 

P-102 

P-101 

P-100 

Rock description 

Mudstone, phosphatic--------------------

Mudstone, phosphatic--------------------

Mudstone, carbonatic --------------------

Mudstone ----------:--------------------- Mudstone-------------------------------

Mudstone -------------------------------

Mudstone ------------------------------- Mudstone---------~---------------------

Mudstone, phosphatic--------------------

Mudstone-------------------------------

Phosphate rock, argillaceous-----··-------

Carbonate rock, argillaceous-------------

Mudstone-------------------------------

Mudstone, carbonatic -------------------- Mudstone, phosphatic--------------------

Mudstone, carbonatic -------------------- Mudstone, phosphatic--------------------

Carbonate rock-------------------------~ 

Mudstone, phosphatic--------------------

Carbonate rock, argillaceous-------------

Mudstone, phosphatic--------------------

Mudstone, carbonatic --------------------

Carbonate rock ------------------------- Mudstone-------------------------------

Phosphate rock, argillaceous, phosphatic 

mudstone, mudstone and phosphate rock---

Mudstone, carbonatic, phosphate rock 

and mudstone ------------------------- Mudstone, calcareous--------------------

Mudstone, calcareous, phosphatic---------

Phosphate rock, argillaceous and 

phosphatic mudstone--------------------

Carbonate rock, argillaceous-------------

Phosphate rock and phosphatic mudstone---

Mudstone and calcareous mudstone--------

Phospha~ rock, argillaceous-------------

Mudstone, carbonatic and phosphatic 

mudstone--~---------------------------

Devils Slide-Continued 

Sample Thickness 

no. (feet) 

6177-RGW 2.2 

6176- RGW 1.2 

6175-RGW 1.9 

6174-RGW 1.7 

6173-RGW 1.7 

6172-RGW 1.4 

6171- RAS 2.4 

6170- RAS 4.3 

6169- RAS 1.9 

6168- RAS 2.5 

6167- RAS 1.5 

6166- RAS 1.1 

6165- RAS 3. 1 

6164- RAS . 7 

6163- RAS 1.3 

6162- RAS 2.2 

6161- RAS 1.1 

6160- RAS 1.0 

6159- RAS 2.4 

6158- TMC 1.5 

6157- TMC 1. 8 

6156- TMC . 7 

6155-TMC • 8 

6154-TMC 1. 2 J 

6153- TMC . 9 

6152-TMC 1.4 

6151- TMC 3.4 

6150-TMC 1.8 

6149- TMC 1.8 

6148- TMC 2. 1 

6147-TMC • 8 

6146-TMC 1. 7 

6145- TMC • 5 

6144- TMC 1.0 

Chemical analyses Cumulative Thickness x (percent) thickness percent P 2o 

P205 

Acta (feet) (cumulativef insoluble 

10.8 46.5 18.0 95.36 

13.8 44.6 19.2 111. 92 

4.05 40.5 21. '1 119. 61 

4.15 79.0 22.8 126.66 

4.10 78.3 24.5 133.64 

7.00 60.6 25.9 143.44 

3.95 65.8 28.3 152.92 

2.65 71. 6 32.6 164.31 

13.5 49.8 34.5 189.96 

2.45 79.5 37.0 196.08 

19.9 41.3 38.5 225.94 

1. 10 29.6 39.6 227.14 

6.05 73. 1 42.7 245.90 

1. 10 45.7 43.4 246.67 

10.6 61.6 44.7 260.45 

1.90 55.3 46.9 264.63 

1 o. 1 59.8 48.0 275.74 

1. 30 15.2 49.0 277.04 

10.2 63.0 51.4 301. 52 

1. 25 32.4 52.9 303.40 

11.4 56.8 54.7 323.92 

4.90 53.6 55.4 327.34 

1. 55 18. 5 56.2 328.58 

4.97 68:7 57.4 334.55 

19.4 29.5 58.3 352.01 

7.20 51.5 59.7 362.09 

2.45 43. 7 63.1 370.42 

6.05 64.4 64.9 381. 31 

23.5 28.2 66.7 423.61 

0 50 25.0 68.8 424.66 

17.4 32.4 69.6 438.58 

3.30 40.2 71.3 444.19 

18.8 25.3 71.8 453.59 

4.80 56.2 72.8 458.39 
P- 99 Phosphate rock, argillaceous, carbonatic -- 6143- TMC . 9 15.0 23.2 73.7 I 471.89 

P- 98 Phosphate rock-------------------------- 6142- TMC • 9 23.4 21. 5 74.6 492.95 

P- 97 Mudstone, phosphatic, mudstone, and 

argillaceous carbonate rock------------- 6141- TMC 2.0 2.70 17.4 76.6 498.35 

P- 96 Phosphate rock, argillaceous------------- 6140- TMC 1.0 22.4 28.2 77.6 520. 75 

P- 95 Mudstone, phosphatic, phosphate rock, 

and mudstone-------------------------- 6139- TMC . 4 15.0 45.0 78.0 526.75 

P- 94 Phosphate rock, argillaceous------------- 6138- TMC 1.0 22. 1 31.3 79.0 548.85 

P- 93 Carbonate rock, argillaceous------------- 6137- TMC 2.6 .45 33. 7 81.6 550.02 

P- 92 Carbonate rock, argillaceous------------- 6136- TMC . 5 2. 15 35.5 82. 1 551.09 

P- 91 Phosphate rock, argillaceous _____________ 6135- TMC . 9 25.8 27. 2 83.0 574.31 

P- 90 Mudstone------------------------------- 6134- TMC 2.3 . 75 86.8 85.3 576.04 

P- 89 Mudstone------------------------------- 6133- TMC . 4 1. 05 85.8 85.7 576.46 

P- 88 Mudstone------------------------------- 6130- TMC . 6 .75 81. 8 86.3 576.91 

P- 87 Mudstone------------------------------- 6129-TMC 1.8 1. 15 83.7 88. 1 578.98 

P- 86 Mudstone and phosphate rock------------- 6128-TMC . 6 13.4 52.4 88.7 587.02 

P- 85 Phosphate rock and mudstone------------- 6127- TMC . 4 20.8 35.6 89. 1 595.34 

P- 84 Phosphate rock, argillaceous ------------ 6126-TMC . 6 22.8 26.4 89.7 609.02 

P- 83 Mudstone, phosphatic-------------------- 6125- TMC . 9 17. 5 46.0 90.6 624.77 

P- 82 Mudstone------------------------------- 6124- TMC . 7 6.20 75.2 91.3 629. 11 

P- 81 ·Brecciated zone (possible fault zone) ------ -- 4.2 -- -- 95.5 

~--' P- 80 Siltstone, calcareous-------------------- -- 1. 9 -- -- 97.4 w 

P- 79 Carbonate rock; fos. col. no. 12485-------- -- 3.0 -- -- 100.4 

P- 78. Sandstone, carbonatic ------------------- -- 22.8 -- -- 123.2 

P- 77 .Breccia (possible fault zone) ------------- -- 28.2 -- -- 151.4 

P- 76 Sandstone, carbonatic ------------------- -- 3.7 -- -- 155. 1 

P- 75 Mudstone ------------------------------ -- 1.0 -- -- 156. 1 -· P- 74. Mudstone, phosphatic -------·------------ 6132-MAW . 7 10.0 53. 1 156.8 

P- 73 Mudstone, carbona tic ------------------- 6131-MAW 2.9 4.65 40.1 159.7 

P- 72 Mudstone------------------------------- -- 2.3 -- -- 162.0 

P- 71 Mudstone---------------~--------------- -- 4. 1 -- -- 166. 1 

P- 70 Mudstone------------------------------- -- 3.4 -- -- 169.5 

P- 69 Mudstone------------------------------- -- 3.4 -- -- 172.9 

P- 68 Mudstone and chert --------------------- -- 2.9 -- -- 175.8 

P- 67 N{udstone------------------------------- -- 3.4 -- -- 179.2 

P- 66 Mudstone------------------------------- -- 3.2 -- _ .. 182.4 

P- 65 Mudstone, carbonatic ------------------- 6123-MAW 3.2 2.25 58. 1 185.6 *7.20 

P- 64 Mudstone, carbonatic ------------------- 6122 .. MAW 2.7 2.00 52.2 188.3 12.60 

P- 63 Mudstone, carbonatic ------------------- 6121-MAW . 5 8.85 46.9 188.8 17.02 

P- · 62 Mudstone, carbonatic ------------------- 6120-MAW 1.5 3.45 52. 1 190.3 22.20 

P- 61 Mudstone, carbonatic ------------------- 6119-MAW 2.3 5.70 50.8 192.6 35.31 

P- 60 Mudstone, carbonatic ------------------- 6118-MAW 2.5 4.70 38.2 195. 1 47.06 

* Cumulative data incomplete because of missing information. Cumulatives start from zero after interruption. 
,__. 

1-f::.. 

Bed 

no. 

P-59 

P-58 

P-57 

P-56 

P-55 

P-54 

P-53 

P-52 

P-51 

P-50 

P-49 

P-48 

-P-47 

P-46 

P-45 

P-44 

P-43 

P-42 

P-41 

P-40 

P-39 

P-38 

P-37 

P-36 

P-35 

P-34 

P-33 

P-32 

P-31 

P-30 

P-29 

P-28 

P-27 

P-26 

P-25 

P-24 

Rock description 

Mudstone, carbonatic -------------------- Mudstone, carbonatic ------..:.-------------

Mudstone, carbonatic -------------------- Phosphate rock, carbonatic, argillaceous --

Mudstone -------------------------------

- Mudstone -------------------------------

Mudstone ------------------------------- Mudstone, cherty and mudstone ----------- Mudstone, cherty------------------------

Mudstone, cherty------------------------

Mudstone ------------------- _________ _. __ 

Mudstone, cherty------------------------

Mudstone -------------------------------

Mudstone, Mudstone ------------------------------- carbonatic __________ ... _________ 

Mudstone, carbonatic --------------------

Mudstone -------------------------------

Mudstone -------------------------------

Mudstone ------------------------------- Mudstone, carbona tic --------------------

Mudstone, carbonatic --------------------

Mudstone, carbonatic -------------------- Carbonate rock ___ .;, _____________________ 

Mudstone -------------------------------

Mudstone -------------------------------

Mudstone -------------------------------

Mudstone -------------------------------

Mudstone ------------------------------- Mudstone, carbonatic -------------------- Mudstone, carbona tic --------------------

Mudstone ------------------------------- Limestone; fos. col. no. 12484-------------

Limestone, argillaceous; fos. col. no. 

12484 --------------------------------- Mudstone, carbonatic --------------------

Mudstone, carbonatic --------------------

Carbonate rock and phosphate rock --------

Devils Slide-Continued 

Sample Thickness 

no. (feet) 

6117-MAW 1. 5 

6116-MAW 1.5 

6115-MAW 1.4 

6114-MAW .35 

-- 2.7 

-- 3.0 

-- 3.6 

-- 1.3 

-- 1.4 

-- 2.8 

-- 1.9 

-- • 9 

-- 2.3 

-- . 9 

6113-MAW . 8 

6112-MAW 3.0 

6111-MAW . 9 

6110-MAW 1.8 

6109-MAW 1.3 

6108-MAW 2.2 

6107-MAW 5.5 

6106-MAW 3.7 

6105-MAW 1.1 

6104-MAW 1.6 

6103-MAW 1.5 

6102-MAW 2.6 

6101-MAW 2.9 

6100-MAW 3. 1 

6099-MAW 3.2 

6098-MAW 1.1 

6097-MAW 1.2 

6096-MAW 4. 1 

6095-MAW 1.9 

6094-MAW 2.0 

6093-MAW 1.4 

6092-MAW 1.0 

Chemical analyses Cumulative Thickness ·x (percent) - thickness percent P 20 

P205 

Acid (feet) ( cumulativef insoluble 

3.50 42.2 196.6 52.31 

l. 75 40.2 198. 1 54.94 

4.00 45. 7 199.5 60.54 

17.2 22.6 199.85 66.56 

-- -- 202.55 --

-- -- 205.55 -- -- -- 209.15 -- -- -- 210.45 -- -- -- 211.85 -- -- -- 214.65 --

-- -- 216.55 -- -- -- 217.45 -- -- -- 219.75 -- -- -- 220.65 -- 1. 30 54.8 221.45 *l. 04 

• 04 47.4 224.45 1. 16 

1. 35 83. 7 225.35 2.38 

3. 15 78.5 227.15 8.04 

4.90 73.2 228.45 14.42 

1. 15 55.0 230.65 16.94 

.40 59.3 236.15 19.14 

. 50 63.6 239.85 21.00 

. 55 7.3 240.95 21.60 

1. 25 72.5 242.55 23.60 

6.60 66.5 244.05 33.50 

. 70 81. 6 246.65 35.32 

l. 20 82.8 249.55 38.80 

6.60 67.2 252.65 s~. 26 

4.85 55.4 255.85 74.78 

2.25 65.2 256.95 77.26 

3.30 74.7 258.15 81.22 

. 70 16.5 262.25 84.08 

. 80 27.3 264.15 85.60 

5.45 54.3 266.15 96.51 

5. 35 46.9 267.55 104.00 

8.00 12.8 268.55 112. 00 
P-23 Mudstone and phosphatic mudstone --------- 6091-MAW • 7 11. 2 43. 1 269.25 119.84 

P-22 Carbonate rock, phosphatic --------------- 6090-MAW .9 14.2 10.-6 270.15 132.62 

P-21 Phosphate rock, argillaceous-------------- 6089-MAW 1.0 16.3 32.9 271. 15 148.92 

P-20 Mudstone, carbonatic --------------------- 6088-MAW 1.8 4. 70 52. 1 272.95 157.38 

P-19 Mudstone, phosphatic--------------------- 6087-MAW 2.3 14.7 37.4 275.25 191.18 

P-18 Carbonate rock, phosphatic, argillaceous--- 6086-MAW . 9 9.25 23.4 276.15 199.51 

P-17 Mudstone, carbonatic, phosphatic---------- 6085-MAW 1.9 8. 10 40.8 278.05 214.90 

P-16 Mudstone, phosphatic--------------------- 6084-MAW 2. 1 13.5 47.2 280.15 243.25 

P-15 Phosphate rock, carbonatic, argillaceous--- 6083-MAW . 8 14.6 24. 7 280.95 254.93 

P-14 Carbonate rock -------------------------- . 6082-MAW 1.0 2.60 7.7 281.95 257.53 

P-131 Phosphate rock, carbona tic, argillaceous --- 6081-MAW 1.2 18. 1 22.6 283.15 279.25 

P-12 Carbonate rock, phosphatic, argillaceous--- 6080-MAW . 9 10.4 23.5 284.05 288.61 

P-11 Brecciated mudstone containing much 

calcite and chert------------------------ -- 2.2 -- -- 286.25 

P-10 I Carbonate rock, argillaceous; fos. col. 

no. 12483 ------------------------------ 6079-MAW 2.0 1. 35 33.3 288.25 *2.70 

P- 9 I Mudstone. carbonatic--------------------- 6078-MAW 1.4 2.15 58.9 289.65 5.71 

P- 8 Mudstone, phosphatic--------------------- 6077-MAW 1.0 10.5 57.9 290.65 16.21 

P- 7 Carbonate rock. argillaceous-------------- 6076-MAW 1.2 3.95 26.7 291.85 20.95 

P- 6 Carbonate rock; fos. col. no. 12482--------- 6075-MAW . 7 4.75 14.5 292.55 24.28 

P- 5 Carbonate rock; fos. col. no. 12482 --------- 6074-MAW 1.2 7.50 12. 5 293.75 **33.28 

P- 4 Mudstone-------------------------------- -- 1.4 -- -- 295.15 1-' 

CJ1 

P- 3 Mudstone, carbonatic --------------------- -- 2.3 I -- I -- I 297.45 

P- 2 Carbonate rock. argillaceous-------------- -- 3.9 -- -- 301. 35 

P- 1 Mudstone. phosphatic. and argillaceous 

phosphate rock ------.------------------- 6185- RAS 1.7 45.9 I 303.05 

Lower member of Park City formation (?) 

L-41 I Mudstone. carbonatic --------------------- -- 3.3 I -- I -- I 3.3 

L-40 Clay containing fragments of cherty 

carbonate rock ------------------------- -- 11.0 -- -- 14.3 

L-39 Carbonate rock -------------------------- -- 3. 5 -- -- 17.8 

L-38 Mudstone-------------------------------- -- 1.9 -- 19.7 

L-37 Mudstone-------------------------------- -- . 7 -- -- 20.4 

L-36 Mudstone-------------------------------- -- 2.2 -- -- 22.6 

L-35 Mudstone-------------------------------- _ .. 1. 5 -- -- 24.1 

L-34 Mudstone-------------------------------- -- 1.9 -- -- 26.0 

L-33 Mudstone----~--------------------------- -- 1.6 -- _ .. 27.6 

L-32 Mudstone-------------------------------- -- 2.8 -- -- 30.4 

L-31 Mudstone. phosphatic--------------------- 6184- RAS .8 15.9 42.3 31.2 

L-30 Quartzite. argillaceous ------------------- -- 1.8 -- -- 33.0 

L-29 Carbonate rock. cherty ------------------- -- 2.0 -- -- 35.0 

* Cumulative data incomplete because of missing information. Cumulatives start from zer.o after .interrl,lption. 

** Note incompleteness of cumulative data. 
Bed 

no. 

L-28 

L-27 

L-26 

L-25 

L-24 

L-23 

L-22 

L-21 

L-20 

L-19 

L-18 

L-17 

L-16 

~---' L-15 a:> L-14 

L-13 

L-12 

L-11 

L-10 

L- 9 

L- 8 

L- 7 

L- 6 

L- 5 

L- 4 

L- 3 

L- 2 

Rock description 

Carbonate rock, cherty ------------------- Carbonate rock--~------------------------

Mudstone carbonatic --------------------- Mudstone' and phosphate rock --------------

Mudstone. carbonatic ---------------------

Muqstone, ~arbonatic; fos. col. no. 

12481 ---------------------------------- ~udstone--------------------------------

Mudstone, carbonatic --------------------- Mudstone; fos. col. no. 12480 -------------- Mudstone, carbonatic, chert, and 

mudstone-------------------------------

Carbonate rock---------------------------

Mudstone, carbonatic; fos. col. no. 

12479-----=----------------------------

Mydstone--------------------------------

Mudstone--------------------------------

Mudstone, carbonatic ---------------------

Mudstone, carbonatic; fos. col. no. 

12478 ---------------------------------- Carbonate rock -------------------------- Mudstone------------~------------------

Carbonate rock, argillaceous--------------

S~ction possibly faulted, remainder 

m~asured on north side of canyon. Bed 

. L-25 correlated with beds L-6, 7, and 8; 

beds L-10 through L-24 represent upper 

part of L-5. Beds below L-6 poorly 

exposed and not described in detail. 

Mudstone --------------------------------

Mudstone, phosphatic---------------------

Mudstone --------------------------------

Carbonate rock, argillaceous --------------

Mudstone -------------------------------- Mudstone--------------------------------

Carbonate rock, chert, and cherty 

carbonate rock--------------------------

Covered ---------------------------------

Devils Slide-C 011tinued 

Sample 

no. 

6183- RAS 

6188-RGW 

6187-RGW 

6186-RGW 

Thickness 

(feet) 

3.6 

2.5 

2.9 

(1. 1) 

(2. 2) 

(2. 3) 

(. 8) 

(1. 7) 

(. 8) 

(. 6) 

(2. 9) 

(. 9) 

(. 8) 

(3. 9) 

(2. 3) 

(2. 5) 

(2. 4) 

(. 9) 

(3. 3) 

(. 7) 

1.2 

. 5 

• 7 

65.0 

77.0 

27.0 

97.0 

Chemical analyses 

(percent) 

ACid 

P205 I insoluble 

16.4 

14.4 

6. 10 

4. 15 

47.5 

44.3 

68.3 

33.4 

Cumulative 

thickness 

(feet) 

38.6 

41. 1. 

44.0 

45.2 

45.7 

46.4 

111.4 

188.4 

215.4 

312.4 

Thickness x 

percent P 20 5 (cumulative) 
'C 

Q) 

.a 

0 P.. 

0 ..; ..... -.D I 

s:: 

0 

...... 

~ 

a 

... 

0 

..... 

... 

Q) 

.a 

Q) 

~ 

I I 

I I I I I I 

I I I I I I I I 

I I 

I I I I I I 

I I I I 

I I I I 

I I I I I I 

I I 

I I I I 

I I I I I I 

I I I I 

I I I I 

I I I I 

Q) Q) 

s:: t:: .B 0 

..... til til 'C 'C t:: t:: 

C1S C1S 

Ul CJl 

17 
Franson Canyon (Pinon Canyon), Utah, lot 1347 

Park City formation measured and sampled at natural exposure on the north flank of the Uinta Mountains axis in Franson Canyon, sec. 14, 

T. 1 S., R. 6 E., Summit County, Utah. Beds strike N. so• E. and dip 30• N. Section measured and sampled by T. M. Cheney, 

R. A. Smart, M.A. Warner, and R. G. Waring in June 1951. Samples analyzed by Trace Elements Section laboratory, Denver, 

Colo. 

Bed 

no. 

U-70 

U-69 

U-68 

U-67 

tx:; U-66 

U-65 

U-64 

U-63 

U-62 

U-61 

.U-60 

U-59 

U-58 

U-57 

U-56 

U-55 

U-54 

U-53 

U-52 

U-51 

U-50 

U-49 

U-48 

U-47 

U-46 

Chemical analyses 

Sample Rock description Thickness (percent) 

no. (feet) -~ Acid P2o5 insoluble 

Upper member of Park City formation-top not exposed 

Woodside-Park City contact covered; 

approximate thickness of covered 

interval 

Carbonate rock; fos. col. no. 125001-------- Carbonate rock, argillaceous; fos. col. no. 12500 ___________ .,: _________________ _ 

Carbonate rock; fos. col. no. 12500 --------

Carbonate rock; fos. col. no. 12500 --------

Carbonate rock, argillaceous; fos. col. 

no. 12500------------------------------

Carbonate rock; fos. col. no. 12500 --------

Siltstone, carbonatic; fos. col. no. 12500 ---

Siltstone, carbonatic; fos. col. no. 12500 ---

Siltstone, carbona tic-------------------·-

Siltstone, carbona tic---------------------

Siltstone, carbona tic---------------------

Siltstone, carbonatic; fos. col. no. 12499 ---

Carbonate rock--------------------------

Carbonate rock, silty--------------------

Sandstone, .carbona tic--------------------

Carbonate rock--------------------------

Carbonate rock--------------------------

Mudstone, carbonatic --------------------

Mudstone, carbonatic --------------------

Mudstone, carbonatic --------------------

Carbonate rock, argillaceous -------------

Siltstone--------------------------------

Siltstone, carbonatic ---------------------

Carbonate rock, argillaceous -------------

Mudstone, carbonatic --------------------

6320- RAS 

15.0 

2. 8 

3.2 

3. 1 

3. 2 

2. 7 

1. 9 

2. 5 

1.7 

1.2 

2.9 

1.9 

2. 1 

2.0 

. 4 

4.7 

2.8 

4.4 

1.3 

1.8 

1.2 

3. 1 

7.2 

12.4 

1.2 

• 7 

6.9 31.3 

Cumulative 

thickness 

(feet) 

15.0 

17.8 

21.0 

24.1 

27.3 

30.0 

31.9 

34.4 

36. 1 

37.3 

40.2 

42.1 

44.2 

46.2 

46.6 

51.3 

54. 1 

58.5 

59.8 

61.6 

62.8 

65.9 

73.1 

85.5 

86.7 

87.4 

Thickness x 

percent P 2o 5 (cumulative) 
,_.... 

co 

U-45 

U-44 

U-43 

U-42 

U-41 

U-40 

U-39 

U-38 

U-37 

U-36 

U-35 

U-34 

U-33 

U-32 

U-31 

U-30 

U-29 

U-28 

U-27 

U-26 

U-25 

U-24 

U-23 

u-22 

U-21 

U-20 

U-19 

U-18 

U-17 

U-16 

U-15 

U-14 

U-13 

U-12 

U-11 

U-10 

u- 9 

u- 8 

Carbonate rock, argillaceous-------------

Siltstone ------ --.--~------ -------------- Sandstone, carbonatic--------------------

Sandstone ------------------------------ Sandstone, carbonatic -------------------

Siltstone, carbonatic -------------------- Mudstone, carbonatic -------------------- Carbonate rock, argillaceous-------------

Carbonate rock, sandy, and argillaceous 

carbonate rock ------------------------ Carbonate rock, argillaceous-------------

Carbonate rock; fos. col. no. 12498--------

Sandstone; fos. col. no. 12498-------------

Sandstone. carbonatic; fos. col. no. 

12498------------------------~--------

Chert and carbonatic sandstone; fos. col. 

no. 12498------------------------------

Chert ----------------------------------

Siltstone -------------------------------

Siltstone, cherty ------------------------

Siltstone carbonatic -------------------- Siltstone~ fos. col. no. 12497--------------

Siltstone carbona tic -------------------- ' . Carbonate rock, argillaceous; fos. col. 

no. 12496 -~--------------------------- Sandstone, carbonatic ------------------- Carbonate rock ------------------------- Chert and cherty carbonate rock----------

Chert----------------------------------

Sandstone, carbonatic -------------------

Chert ---------------------------------- Chert ---------------------------------- Carbonate rock, sandy-------------------

Carbonate rock -------------------------

Chert ---------------------------------- Chert and carbonate rock ----------------

Carbonate rock, cherty ------------------

Chert ---------------------------------- Carbonate rock, sandy-------------------

Siltstone, carbonatic; fos. col. no. 

12495---------------------------------

Siltstone, carbonatic; fos. col. no. 

12495---------------------------------

Siltstone, carbonatic; fos. col. no. 

12495---------------------------------

6319-MAW 

6318-MAW 

8. 1 I -- -- 3.9 -- -- 2.2 -- -- 8.7 -- -- 12.9 -- -- 5.3 -- -- 2.2 0.60 64.7 

1.5 6.00 30.9 

3.4 -- -- 5.6 -- --

3.0 -- -- 2.3 -- -- 2.0 -- --

1.9 -- -- 1.9 -- -- 1. 7 -- -- 1.9 -- -- 1.5 -- -- 3.9 -- -- 1.5 -- -- 1. 9 -- -- 1.0 -- _ ... 

. 5 -- -- 1.0 -- -- 1.0 -- --

1. 8 -- -- 1.8 -- -- 2.3 -- -- 4.0 -- -- 3.6 -- -- 3.7 -- -- 3,8 -- -- 5.4 -- -- 1.2 -- -- 5.2 -- -- 5,3 -- -- 4.3 -- --

4.7 -- --

1 Fossil collection made by J. E. Smedley, Paleontology and Stratigraphy Branch, U. S. Geological Survey. 

95.5 

99.4 

101.6 

110.3 

123.2 

128.5 

130.7 

132.2 

135.6 

141.2 

144.2 

146.5 

148.5 

150.4 

152.3 

154.0 

155.9 

157.4 

161.3 

162.8 

164.7 

165.7 

166.2 

167.2 

168.2 

170.0 

171.8 

174. 1 

178. 1 

181.7 

185.4 

189.2 

194.6 

195.8 

201.0 

206.3 

210.6 

215.3 
Bed 

no. 

u- 1 

u- 6 

u- 5 

u- 4 

u- 3 

u- 2 

u- 1 

P-50 

P-49 

P-48 

P-47 

P-46 

t:\:l P-45 0 P-44 

P-43 

P-42 

P-41 

P-40 

P-39 

P-38 

P-37 

P-36 

P-35 

P-34 

P-33 

P-32 

P-31 

P-30 

P-29 

P-28 

P-27 

P-26 

Franson C anyon-e ontinued 

C hemlcal analyses 

Rock description Sample Thickness (percent) 

no. (feet) P205 ACld 

insoluble 

Siltstone, carbonatic; fos. col. no. 12494 ---- -- 1. 4 -- -- Siltstone, carbonatic; fos. col. no. 12494 ---- -- 1.1 -- -- Siltstone; fos. col. no. 12494 --------------- -- 1. 1 -- -- Covered interval; fos. col. no. 12494-------- -- 7.6 -- -- Carbonate rock; fos. col. no. 12494 --------- -- 2.5 -- -- Carbonate rock, argillaceous; fos. col. 

no. 12493------------------------------- -- 12.9 -- -- Limestone, argillaceous ------------------ -- 1.7 -- -- Phosphatic shale member of Park City formation (?) 

Siltstone, carbonatic --------------------- Mudstone, carbonatic; fos. col. no. 12492 ---

Carbonate rock, cherty ------------------- Carbonate rock, phosphatic; fos. col. no. 

12492----------------------------------

Carbonate rock, argillaceous--------------

Carbonate rock; fos. col. no. 12491 ---------

Siltstone, cherty. carbonatic --------------

Mudstone, carbonatic -----------.----------

Siltstone, cherty, carbqnatic --------------

Carbonate rock --------------------------

Carbonate rock, cherty ------------------- Mudstone, phosphatic, carbonatic ---------- Carbonate rock, argillaceous--------------

Mudstone, carbonatic, phosphatic----------

Mudstone, catbonatic --------------=------

Carbonate rock --------------------------

Carbonate rock --------------------------

Carbonate rock --------------------------

Carbonate rock --------------------------

Carbonate rock --------------------------

Mudstone, cherty-------------------------

Carbonate rock -------------------------- Siltstone------------~--------------------

Siltstone, carbonatic and chert-------------

Siltstone, carbonatic and chert-------------

6317- RAS 

6316- RAS 

6315- RAS 

6314- RAS 

6313- RAS 

6312- RAS 

6311- RAS 

6310- RAS 

6309- RAS 

2.3 

• 5 

1.1 

1.0 

1.1 

. 3 

2.6 

. 4 

1.3 

1.5 

5.4 

1.1 

1. 5 

• 8 

1.0 

3.4 

2.9 

2.3 

1.1 

1.7 

1.8 

1.3 

1.7 

4.2 

1.8 

7.85 

2.80 

7.20 

2.15 

4.30 

12.6 

2.95 

9.80 

2.65 

8.7 

39.3 

12. l 

47.8 

45.9 

39.2 

33.6 

47.5 

68.8 

Cumulative 

thickness 

(feet) 

216.7 

217.8 

218.9 

226.5 

229.0 

241.9 

243.6 

2.3 

2.8 

3.9 

4.9 

6.0 

6. 3 

8.9 

9.3 

10.6 

12. 1 

17.5 

18.6 

20. 1 

20.9 

21.9 

25.3 

28.2 

30.5 

31. 6 

33.3 

35. l 

36.4 

38.1 

42.3 

44.1 

Thickness x 

percent P 20 

(cumulativef' 

--

--

--

--

--

--

--

7.85 

10.93 

13.09 

18.68 

20.40 

13,86 

18.28 

26.12 

28. 78 
P-25 Chert ---------------------------------- -- 1. 8 -- -- 45.9 

p 24 Siltstone and chert----------------------- -- 8.4 -- -- 54.3 

P-23 ~udstone ------------------------------- 6308-T~C . 4 2.55 78.0 54.7 1. 02 

P-22 Carbonate rock, argillaceous------------- 6307-T~C 1.0 .95 26. 1 55.7 1. 97 

P-21 Carbonate rock, argillaceous------------- 6306-T~C 1.9 3.25 38.7 57.6 8.14 

P-20 Carbonate rock, argillaceous------------- 6305-T~C . 8 1. 40 26.7 58.4 9.26 

P-19 ~udstone, carbonatic -------------------- 6304-T~C 4.9 2.75 45.8 63.3 22.74 

P-18 Siltstone, carbonatic -------------------- 6303-T~C 2.0 1. 70 51. 3 65.3 26. 14 

P-17 Siltstone, carbonatic -------------------- 6302-RGW 2.2 2.05 60.7 67.5 30.65 

P-16 Siltstone, carbonatic -------------------- 6301-RGW 1.5 5.30 42.2 69.0 38.60 

P-15 Carbonate rock-------------------------- 6300-RGW 1.9 . 90 17.9 70.9 40.31 

P-14 Siltstone, carbonatic --------------------- 6299-RGW 4.3 3.65 66.8 75.2 56.01 

P-13 Siltstone-------------------------------- 6298-RGW 1.5 4.25 70.9 76.7 62.38 

P-12 Sandstone, carbonatic ------------------- 6297-RGW 1.5 . 40 46.4 78.2 62.98 

P-11 Siltstone, carbonatic -------------------- 6296-RGW 3.8 5.75 56. 1 82.0 84.83 

P-1·0 Siltstone, carbona tic--------------------- 6295-RGW 2.2 6.90 50.9 84.2 100.01 

P- 9 Siltstone, carbonatic, phosphatic---------- 6294-RGW 1.7 10. 1 45.7 85.9 117.18 

P- 8 Siltstone, carbona tic, phosphatic---------- 6293-RGW 1.9 8.45 41.8 87.8 133.24 

P- 7 Carbonate rock, argillaceous, phosphatic -- 6292-RGW 2. 7 9.75 30.0 90.5 159. 56 

P- 6 Phosphate rock, argillaceous, carbonatic -- 6291-RGW 1. 8 17.0 31.4 92.3 190.16 

P- 5 Carbonate rock-------------------------- 6290-RGW 1.8 2.65 10.6 94.1 194.93 

~ P- 4 Carbonate rock, argillaceous, phosphatic -- 6289-RGW 1. 6 9. 15 36.5 95.7 209.57 

P- 3 Siltstone and argillaceous phosphate rock -- 6288-RGW 1. 2 16.2 18.9 96.9 229.01 

P- 2 Phosphate rock, carbona tic--------------- 6287-RGW .,6 24.5 18. 3 97.5 243.71 

P- 1 Phosphate rock; fos. col. no. 12490 -------- 6286-RGW .15 29.5 16.6 98.0 258.46 

Lower member of Park City formation (?) 

L- 5 Sandstone, calcareous; fos. col. no. 12490-- -- 11. 9 -- -- 11.9 -- L- 4 Sandstone------------------------------- -- 8.5 -- -- 20.4 -- L- 3 Chert and calcareous sandstone----------- -- 1.2 -- -- 21.6 -·- L- 2 Sandstone; fos. col. no. 12489 ------------- -- 10.0 -- -- 31.6 -- L- 1 Sandstone, calcaroues ------------------- -- 13.0 -- -- 44.6 --
t-v 

t-v 

Horseshoe Canyon, Utah, lot 1339 

Park City formation measured and sampled in hand trenches and at natural exposure in Horseshoe Canyon on the north side of the Green 

River, sec. 36, T. 3 N., R. 20 E., Daggatt County, Utah. Beds strikeS. so• E. and dip Is• N. Section measured and sampled by 

R. G. Waring, R. A. Smart, H. W. Peirce, and ToM. Cheney in September 19SO. Samples analyzed by U.S. Bureau of Mines 

laboratory, Albany, Oreg. 

Chemical analyses Cumulative Thickness x Bed Sample Thickness (percent) thickness percent P Rock description 2of no. (feet) P20S l Acid (feet) (cumulative no. 

insoluble -----

Upper member of Park City formation-top not exposed 

U-30 Carbonate rock; fos. col. no. 122871 ------- -- 4.0 -- -- 4.0 IT U-29 Carbonate rock; fos. col. no. 12287 ------- -- 3. 6 -- -- 7.6 

U-28 Carbonate rock, argillaceous------------- -- 2.6 -- -- 10.2 

U-27 Carbonate rock-------------------------- -- 1S.O -- -- 2S.2 

-

U-26 Carbonate rock; fos. col: no. 12286-------- -- 2S. -- -- S0.2 

U-2S Carbonate rock; fos. col. no. 12286 -------- -- 4. 1 -- -- S4.3 -- U-24 Carbonate rock; fos. col. no. 12286 -------- -- 7. 3 -- -- 61.6 -- U-23 Carbonate rock-------------------------- -- 6.3 -- -- 67.9 -- U-22 Carbonate rock, argillaceous ----"w.·-------- -- 9.0 -- -- 76.9 -- U-21 Carbonate rock------------------~~------ -- 4.2 -- -- 81. 1 --

U-20 Carbonate rock-------------------------~ -- 4.2 -- -- 8S.3 -- U-19 Covered interval; dominantly carbonate 

rock float ----------------------------- -- 26. -- -- 111.3 -- U-18 Gypsum -------------------------------- -- 1.0 -- -- 112.3 -- U-17 Mudstone, carbonatic, gypsiferous-------- -- 1.8 -- -- 114. 1 -- U-16 Sandstone, carbonatic ------------------- S30S-RGW 3.6 0.2 68.8 117.7 0.72 

U-1S Sandstone, carbonatic ------------------- S304-RGW 1. 9 . 2 68.0 119.6 1. 10 

U-14 Sandstone------------------------------- S303-RGW 2.9 . 2 74.S 122.S 1. 68 

U-13 Sandstone------------------------------- S302-RGW 2. 1 . 2 73.6 124.6 2. 10 

U-12 Sandstone------------------------------- S301-RGW 3. 1 .4 70. 7 127.7 3.34 

U-11 Sandstone, carbonatic-------------------- -- 4.0 -- -- 131.7 -- U-10 Carbonate rock, sandy; fos. col. no. 1228S-- S300-RGW 3.3 1.1 41.3 13S.O -- u- 9 Carbonate rock, sandy; fos. col. no. 12285-- 5299-RGW 2.9 1.0 42.9 137.9 -- u- 8 Sandstone, carbona tic; fos. col. no. 12285 -- -- 12.0 -- -- 149.9 -- u- 1 Carbonate rock; fos. col. no. 12284 -------- -- 3. 2 -- -- 153. 1 -- u- 6 Mudstone, cherty------P~------------~--- -- 4.7 -- -- 157.8 --

u- s Carbonate rock-------------------------- -- 5.2 -- -- 163.0 -- u- 4 Gypsum -------------------------------- -- . 3 -- -- 163.3 -- u- 3 Mudstone------------------------------- -- . 5 -- -- 163.8 -- u- 2 Carbonate rock-------------------------- -- 4.0 -- -- 167.8 -- u- 1 Carbonate rook; fos. col. no. 12283 -------- -- 7.6 -- -- 175.4 -- ---- ~--~---~----- - ---- - '----~--~-~-----
1:\:) 

05 

Phosphatic shale member of Park City formation 

P-28 Carbonate rock, phosphatic, argillaceous; 

fos. col. no. 12282---------------------- 5298-RGW· 1. 5 8.4 

P-27 Carbonate rock, phosphatic, argillaceous; 

fos. col. no. 12281 ---------------------- 5297-RGW 1.3 9. 1 

P-26 Mudstone, carbonatic; fos. coL. no. 12280--- 5296-RGW 1.9 8. l 

P-25 Carbonate rock and chert; fos. col. no. 

12279 --------------------------------- 5295-RGW 3.0 2. 7 

P-24 Phosphate rock, argillaceous and dolomite; 

fo3. col. no. 12278---------------------- 5294-RGW 1. 4 16.0 

P-23 Phosphate rock, argillaceous, carbonatic; 

fos. col. no. 12277---------------------- 5293-RGW 1.2 14.3 

P-22 Carbonate rock; fos. col. no. 12276 -------- 5292-HWP . 7 6.8 

P-21 Mudstone, phosphatic, carbonatic; fos. coL no. 12275------------------------------ 5291-HWP 2.2 10.2 

P-20 Mudstone, carbonatic; fos. col. no. 12274--- 5290-HWP 2.0 6.8 

P-19 Mudstone, carbonatic -------------------- 5289- RAS 3. 1 6.8 

P-18 Mudstone, phosphatic-------------------- 5288- RAS 2.0 11. l 

P-17 Mudstone, carbonatic -------------------- 5287- RAS 1.1 6.3 

P-16 Phosphate rock, argillaceous ------------- 5286- RAS 1.5 20. 1 

P-15 Phosphate rock, carbonatic; fos. col. no. 12273------------------------------ 5285- RAS . 9 18.0 

P-14 Phosphate rock, argillaceous; fos. col. 

no. 12273------------------------------ 5284- RAS . 5 22.4 

P-13 Mudstone, phosphatic, carbonatic --------- 5283- RAS 1.6 8.7 

P-12 Mudstone, carbonatic -------------------- 5282- RAS 1.8 4.6 

P-11 Mudstone, phosphatic, carbonatic --------- 5281- RAS 1.2 8.7 

P-10 Carbonate rock, phosphatic--------------- 5280- RAS 1.4 13.0 

P- 9 Phosphate rock, argillaceous------------- 5279- RAS 1.5 24.6 

P- 8 Phosphate rock, argillaceous ------------- 5278- RAS 1.9 20. 1 

P- 7 Mudstone, carbonatic -------------------- 5277- RAS 1.1 5. 6 

P- 6 Phosphate rock, argillaceous _____ .,. _______ 5276- RAS . 6 19.8 

P- 5 Mudstone, phosphatic -------------------- 5275- RAS 1.7 7. 8 

P- 4 Phosphate rock, argillaceous ------------- 5274- RAS 1.4 23.8 

P- 3 Phosphate rock-------------------------- 5273- RAS 3.6 26.7 

P- 2 Phosphate rock, argillaceous ------------- 5272- RAS 1.1 16.0 

P- 1 Mudstone, phosphatic, carbonatic --------- 5271- RAS • 5 7.9 

Lower member of Park City formation 

L-271 Sandstone, carbonatic; fos. col. no. 

12272 --------------------------------- L-26 Carbonate rock, silty --------------------

3.3 

1.5 

24.4 

25.8 

36.8 

58.0 

30.2 

25.3 

10,9 

36.2 

43.9 

50.7 

44.0 

52.3 

30.8 

10.8 

15. 3 

36.8 

40.3 

35.8 

10.4 

26.0 

18. 8 

39.8 

30.2 

53.6 

16. 8 

11.4 

36.6 

43.7 

1 Fossil collection made by J. E. Smedley, Paleontology and Stratigraphy Branch, U. S. GeologicaFSurvey. 

1. 5 

2.8 

4.7 

7. 7 

9. l 

10.3 

11. 0 

13.2 

15.2 

18.3 

20.3 

21.4 

22.9 

23.8 

24.3 

25.9 

27.7 

28.9 

30.3 

31.8 

33.7 

34.8 

35.4 

37. 1 

38.5 

42.1 

43.2 

43.7 

3.3 

4.8 

12.60 

24.43 

39.82 

47.92 

70.32 

87.48 

92.24 

114.68 

128.28 

149.36 

171. 56 

178.49 

208.64 

224.84 

236.04 

249.96 

258.24 

268.68 

286.88 

323.78 

361.97 

368. 13 

380.01 

393.27 

426.59 

522.71 

540.31 

544.26 
Bed 

no. 

L-25 

L-24 

L-23 

L-22 

L-21 

L-20 

L-19 

L-18 

L-17 

L-16 

L-15 

L-14 

L-13 

L-12 

1:\:) L-11 ~ 

L-10 

L- 9 

L- 8 

L- 7 

L- 6 

L- 5 

L- 4 

L- 3 

L- 2 

L- 1 

Rock description 

Sandstone. carbona tic---------------_:,----

Carbonate rock, quartzitic; fos. col. no. 

12271 ---------------------------------- Sandstone. carbona tic---=-----------------

Covered interval--------------------------

Sandstone, carbonatic---------------------

Sandstone, carbona tic---------------------

Carbonate rock and carbonatic mudstone ---- Carbonate rock---------------------------

Sandstone, carbonatic---------------------

Sandstone, carbonatic---------------------

Carbonate rock, sandy--------------------

Carbonate rock---------------------------

Siltstone, carbona tic----------------------

Carbonate rock---------------------------

Carbonate rock; fos. col. no. 12270 ---------

Sandstone, carbonatic---------------------

Carbonate rock, sandy--------------------

Carbonate rock, sandy--------------------

Carbonate rock quartzitic ---------------- Sandstone and c'arbonate rock--------------

Carbonate rock, sandy--------------------

Sandstone, carbona tic---------------------' 

Carbonate rock, sandy--------------------

Sandstone, carbona tic---------------------

Carbonate rock, sandy--------------------

Horseshoe Canyon-Continued 

Chemical analyses Cumulative 

I 

Sample I Thickness (percent) thickness no. (feet) P205 

ACid (feet) insoluble 

-- 1.4 -- -- 6.2 I 

4.3 -- -- 10.5 

I 

--

I -- 20.6 -- -- 31. 1 

-- 4. -- -- 35. 1 

-- 10,8 -- -- 45.9 

-- 5.3 -- -- 51.2 

-- . 8 -- -- 52.0 

-- 1.3 -- -- 53.3 

-- 1. 2 -- -- 54.5 

-- 16. 8 -- -- 71.3 

-- 6.3 -- -- 77.6 

-- . 4 -- -- 78.0 

-- 1.1 -- -- 79.1 

-- . 3 -- -- 79.4 

-- 2.2 -- -- 81.6 

-- 3.5 -- -- 85.1 

-- 3.2 .. - -- 88.3 

-- 8.2 -- -- 96.5 

-- 2.8 -- -- 99.3 

-- 0 9 -- -- 100.2 

-- 1.0 -- -- 101.2 

-- . 5 -- -- 101. 7 

-- 4.3 -- -- 106.0 

-- 1.4 -- -- 107.4 

-- 1.2 -- -- 108.6 

Weber formation-top bed only 

Cw-1 rs~~d~t~~e, carbonatic --------------------i -- I 6. 0 I -- I -- I 6. 0 I 

Thickness x 

percent P 20 

(cumulativer 

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--
Fort Douglas, Utah, lot 1350 

Part of Park C::ity formation measured and sampled in outcrop and bulldozer trench near Fort Douglas, EiNEi sec. 17, T. 1 N., R. 2 E., 

Salt Lake County, Utah. Beds strike N. 73• E. and dip 68• S. Section measured and sampled by M.A. Warner, R. A. Smart, and 

T. M. Cheney. Samples analyzed by Trace Elements Section laboratory, Denver, Colo. 

Bed Sample 

Chemical analyses Cumulativ~ 

no. Rock description Thickness (percent) Thickness x 

no. (feet) I Acid 

thickness percent P 2

o 

P2o5 insoluble (feet) (cumulativef 

-

Phosphatic shale member of Park City formation (?) 

P-242 Siltstone------------------------------- -- 4.6 -- -- 4.6 

P-241 Siltstone------------------------------- -- 4.3 -- -- 8.9 

P-240 Mudstone ------------------------------ -- 7. 5 -- -- 16.4 

P-239 Mudstone ------------------------------ -- 7.2 -- -- 23. 6. 

P-238 Chert---------------------------------- -- 2.8 -- -- 26.4 

P-237 Mudstone, cherty----------------------- -- 1.8 -- -- 28.2 

P-236 Mudstone, cherty----------------------- -- 1.5 -- -- 29.7 

P-235 Chert, argillaceous--------------------- -- 1.5 -- -- 31. 2 

P-234 Siltstone ------------------------------- -- 2.7 -- -- 33.9 

P-233 Chert, argillaceous-------------------=- -- 1.5 -- -- 35.2 

1:\:J P-232 Chert, argillaceous--------------------- -- 13. 1 -- -- 48.5 

c.n P-231 Shear zone; brecciated siltstone---------- -- 4.5 -- -- 53.0 

P-230 Siltstone ------------------------------- -- 4. 1 -- -- 57. 1 

P-229 Mudstone ------------------------------ 6406-MAW 4. 1 6.50 64.2 61.2 I 26.65 

P-228 Carbonate rock------------------------- 6405-MAW 1.0 1. 70 6.90 62.2 28.35 

P-227 Phosphate rock, argillaceous ------------ 6404-MAW . 6 20.9 30.0 62.8 I 40.89 

P-226 Siltstone, carbona tic -------------------- -- . 9 -- -- 63.7 

P-225 Mudstone, cherty----------------------- -- 8.3 -- -- 72.0 

P-224 Mudstone ------------------------------ -- 3.4 -- -- 75.4 

P-223 Siltstone------------------------------- -- 1. 9 -- -- 77.3 

P-222 Siltstone------------------------------- -- 2.6 -- -- 79.9 

P-221 Mudstone ------------------------------ -- 2.0 -- -- 81.9 

P-220 Siltstone------------------------------- -- 2.5 -- -- 84.4 

P-219 Chert---------------------------------- -- 2.5 -- -- 86.9 

P-218 Mudstone ------------------------------ -- 4.9 -- -- 91.8 

P-217 Mudstone, cherty----------------------- -- 1.6 -- -- 93.4 

P-216 Mudstone ------------------------------ -- 2.4 -- -- 95.8 

P-Zl5 Mudstone ------------------------------ -- 1.4 -- -- 97.2 

P-214 Mudstone ------------------------------ -- 1.0 -- -- 98.2 

P-213 Mudstone, phosphatic ------------------- 6403-MAW • 5 17.3 44.9 98.7 8.65 

P-212 I Mudstone ------------------------------ 6402-MAW 1.3 1. 20 86.9 100.0 10.21 

P-211 Mudstone and phosphate rock ------------ 6401-MAW 1.0 15. 5 51. 7 101.0 25.71 
Fort Douglas-Continued 

Chemical analyses Cumulative Thickness x Bed I Rock description I Sample Thickness (percent) thickness percent P 20 no. no. (feet) Pzo5 AClO (feet) (cumulativef insoluble 

P-210 Carbonate rock, silty-------------------- 6400-MAW 1. 1 0.95 35.3 1 oz. 1 26.76 

P-209 Mudstone, carbonatic -------------------- 6399-MAW 1.0 2. 15 68.5 103. 1 28.90 

P-208 Mudstone, carbona tic-------------------- 6398-MAW . 8 1. 95 73.9 103.9 30.46 

P-207 Mudstone, phosphatic-------------------- 6397-MAW . 5 9.35 63.9 104.4 35.14 

P-206 Mudstone------------------------------- -- 3.8 -- -- 108.2 --

P-205 Phosphate rock, argillaceous------------- 6396-MAW 14.0 17.4 38.8 122.2 -- P-204 Mudstone, phosphatic-------------------- -- . 9 -- -- 123. 1 -- P-203 Siltstone, carbonatic ----------... --------- -- . 8 -- -- 123.9 -- P-202 Mudstone, siliceous --------------------- -- . 6 -- -- 124.5 -- P-201 Mudstone------------------------------- -- . 9 -- -- 125.4 --

P-200 Mudstone, phosphatic-------------------- 6407-MAW . 3 9.50 64.6 125.7 I -- P-199 Siltstone, carbonatic -------------------- -- 2.4 -- -- 128. 1 -- P-198 Carbonate rock, argillaceous; fos. col. 

no. 125281 ---------~------------------ -- 7.9 -- -- 136.0 

I -- P-1971 Carbonate rock, argillaceous------------- 18.7 -- -- 154.7 -- P-196 Carbonate rock and carbonatic sandstone -- -- 9.2 -- -- 163.9 --

~ P-195 Carbonate rock and carbonatic sandstone -- -- 9.5 -- -- 173.4 -- m P-194 Carbonate rock ----------------:--------- -- 4.7 -- -- 178. 1 -- P-193 Not described--------------------------- -- 26.0 -- -- 204.1 -- P-192 Mudstone, carbonatic -------------------- -- . 6 -- -- 204.7 -- P-191 Chert, mudstone, and carbonate rock ----- -- 8.2 -- -- 212.9 --

P-190 Mudstone------------------------------- -- 2.3 -- -- 215.2 

I 

-- P-189 Mudstone------------------------------- -- 1.1 -- -- 216.3 -- P-188 Mudstone------------------------------- -- • 9 -- -- 217.2 -- P-187 Mudstone------------------------------- -- 3. 1 -- -- 220.3 -- P-186 Mudstone, carbonatic; fos. col. no. 

12527--------------------------------- -- 1.8 -- -- 222.1 I 

-- P-185 Mudstone, carbonatic -------------------- ..... 3.6 -- -- 225.7 -- P-184 Carbonate rock, argillaceous------------- -- 1.0 -- -- 226.7 -- P-183 Mudstone; fos. col. no. 12526 ------------- -- 1.5 -- -- 228.2 -- P-182 Mudstone------------------------------- -- 2.9 -- -- 231. 1 -- P-181 Mudstone------------------------------- -- 1.9 -- -- 233.0 -- P-180 Mudstone------------------------------- -- 2.6 -- -- 235.6 

I 

-- P-179 Chert and mudstone; fos. col. no. 12525---- -- 3.2 -- -- 238.8 -- P-178 Chert ---------------------------------- -- 1.8 -- -- 240.6 -- P-177 Mudstone, carbonatic and phosphatic 

mudstone ----------------------------- -- 1.1 -- -- 241.7 I -- P-176 Mudstone----·--------------------------- -- 2.5 -- -- 244.2 --

P-175 Mudstone ------------------------------- -- z.o -- -- 246.2 I -- P-174 Mudstone------------------------------- -- 1.6 -- -- 247.8 --
P-173 ]4udstone------------------------------- -- 4.2 -- -- 252.0 

P-172 ]4udstone------------------------------- 6395- TMC 1.9 1. 35 82.7 253.9 

I 

2.56 

P.-171 Mudstone, phosphatic-------------------- 6394- TMC 1.9 9.90 55.8 255.8 21.38 

P-170 ]4udstone, carbonatic -------------------- 6393- TMC .8 1. 85 66.3 256.6 22.86 

P-169 Mudstone, carbonatic and cherty mudstone-----------------~------------ 6392- TMC . 8 5.85 I 58.0 I 257.4 I 27.54 

P-168 Mudstone, carbonatic and carbonatic 

chert; fos. col. no. 12524---------------- 6391- TMC 2.6 1. 90 63.6 260.0 32.48 

P-167 Mudstone carbonatic -------------------- 6390-TMC 2.9 1. 70 54.1 262.9 37.40 

P-166 Mudstone; carbonatic -------------------- 6389-TMC 1.5 1. 70 52. 1 264.4 39.96 

P-165 Mudstone, carbonatic -------------------- 6388- TMC 2.9 2.25 52.7 267.3 105.20 

P-164 ]4udstone, carbona tic-------------------- 6387-TMC 1. 6 2.50 61. 0 268.9 109.20 

P-163 Mudstone carbonatic -------------------- 6386- TMC 1.1 2.75 55.5 270.0 112.23 

P-162 Mudstone; carbonatic __________ : _________ 6385- TMC 1.9 2.75 48.2 271.9 111-.46 

P-161 Mudstone, phosphatic, carbonatic; fos. 

col. no. 12523-------------------------- 6384- TMC . 6 13.3 46.6 272.5 I 125.44 

P-160 Siltstone ---------------------;--------- -- 5.2 -- -- 277.7 

P-159 Siltstone ------------------------------- -- 7.3 -- -- 285.0 

P-158 Mudstone; fos. col. no. 12522 ------------- -- 3.8 -- -- 288.8 

P-157 Mudstone------------------------------- -- 4.5 -- -- 293.3 

P-156 Mudstone, carbonatic -----~--------------- 6383-MAW . 4 4.65 52.0 293.7 

I 

1. 86 

P-155 Mudstone, carbonatic -------------------- 6382-MAW 1.4 2.50 47.5 295.1 5. 36 

::5 P-154 Mudstone, phosphatic-------------------- 6381-MAW . 3 15.5 47.9 295.4 10.01 

P-153 Siltstone - .. ..;---------------------------- -- 10.0 -- -- 305.4 

P-152 Silistone ------------------------------- -- 3.3 -- -- 308.7 

P-151 Siltstone ------------------------------- -- 5.8 -- -- 314.5 

P-150 Silistone ------------------------------- -- 8.0 -- -- 322.5 

P-149 Siltstone ------------------------------- -- 2.0 -- -- 324.5 

P-148 Siltstone, cherty ------------------------ -- 3.8 -- -- 328.3 

P-147 Silistone ------------------------------- -- 2.2 -- -- 330.5 

P-146 Siltstone ------------------------------- -- 3.2 -- -- 333.7 

P-145 Siltstone; fos. col. no. 12521 -------------- -- 7.3 -- -- 341.0 

P-144 Siltstone .. ------------------------------ -- 1.8 -- -- 342.8 

P-143 -Siltstone ------------------------------- -- 1.5 -- -- 344.3 

P-142 ]4udstone, cherty -------------~--------- -- • 5 -- -- 344.8 

P-141 Siltstone, carbonatic -------------------- -- 1.0 -- -- 345.8 

P-140 Siltstone ------------------------------- -- • 7 -- -- 346.5 

P-139 Mudstone; fos. col. no. 12520 ------------- 6380-MAW . 8 4.70 79.5 347.3 3.76 

P-138 Siltstone ------------------------------- 6379-MAW 3.4 2.35 78.0 350.7 11.75 

P-137 Carbonate rock, argillaceous------------- 6378-MAW 5.2 1. 00 45.7 355.9 16.95 

P-136 Siltstone, carbonatic -------------------- 6377-MAW 1.2 .85 64.7 357.1 17.97 

P-135 Mudstone, carbonatic -------------------- 6376-MAW 1:4 2.80 65.8 358.5 21.89 

1 Fossil col~ection made by Harold I. Saunders, Paleontology and Stratigraphy Branch, U. S. Geological Survey. 
C\:) 

CD 

Bed 

no. 

P-134 

P-133 

P-132 

P-131 

P-130 

P-129 

P-128 

P-127 

P-126 

P-125 

P-124 

P-123 

P-122 

P-121 

P-120 

P-119 

P-118 

P-117 

P-116 

P-115 

P-114 

P-113 

P-112 

P-111 

P-110 

P-109 

P-108 

P-107 

P-106 

P-105 

P-104 

P-103 

P-102 

P-101 

P-100 

P- 99 

P- 98 

Rock description 

Mudstone ------------------------------

Mudstone ------------------------------ Carbonate rock, argillaceous, 

phosphatic----------------------------

Carbonate rock, argillaceous------------

Mudstone and phosphate rock------------

Mudstone, carbonatic -------------------

Mudstone ------------------------------ Mudstone, phosphatic ------------------- Mudstone, phosphatic-------------------

Mudstone, carbonatic -------------------

Mudstone, phosphatic-------------------

Mudstone, phosphatic; fos. col. no. 

12519--------------------------------

Carbonate rock; fos. col. no. 12518-------

Phosphate rock, argillaceous, 

carbonatic----------------------------

Carbonate rock-------------------------

Phosphate rock, argillaceous------------

Phosphate rock, argillaceous------------

Mudstone-----------.. ------------------- Chert and calcite-----------------------

Carbonate rock ------------------------

t. 

Carbonate rock, argillaceous------------

Phosphate rock-------------------------

Phosphate rock; fos. col. no. 12514-------

Mudstone------------------------------

Mudstone ------------------------------

Mudstone, phosphatic----------'---------

Siltstone-------------------------------

Mudstone ------------------------------

Mudstone ------------------------------

Mudstone ------------------------------

Mudstone ------------------------------

Mudstone ------------------------------

Mudstone ------------------------------

Mudstone ------------------------------

Mudstone ------------------------------

Mudstone ----------------.. -------------

Mudstone ------------------------------

Fort Douglas-Continued 

Sample Thickness 

no. (feet) 

6375-MAW 1.0 

6374-MAW 1.4 

6373-MAW . 7 

6372-MAW 1.1 

6371-MAW • 8 

6370-MAW 1.2 

6369-MAW 1.2 

6368-MAW 1.3 

6367-MAW 3.3 

6366-MAW 2.3 

6365-MAW 1.2 

6364-MAW 1.5 

6363-MAW 1.0 

6362-MAW 2.8 

6361-MAW 1.2 

6360-MAW 2.6 

6359-MAW 2. 1 

-- 3.0 

-- 1. 2 

6358-MAW . 7 

6357-MAW . 6 

6356-MAW 2.4 

6355-MAW . 6 

-- 5.0 

-- 2.4 

6354-MAW 1. 3 

-- 6.0 

-- . 9 

-- 1.6 

-- 2.9 

-- 2.7 

-- 4.6 

-- 2.0 

-- 2. 1 

-- 2.3 

-- 3.5 

-- 6.6 

Chemical analyses Cumulative Thickness x (percent) thickness percent P 2

o 

P2os 

ACld (feet) (cumulativef insoluble 

2.00 73.5 359.5 23.89 

4.35 70.3 360.9 29.98 

9.95 31. 7 361.6 36.94 

6.65 44.3 362.7 44.26 

18. 5 35.4 363.5 59.06 

1. 65 43.0 364.7 61.04 

6.50 7.0. 3 365.9 68.84 

13.9 48. 1 367.2 86.911 

·11. 5 61.4 370.5 124.86 

7.55 54.3 372.8 142.22 

12.0 52.6 374.0 156.62 

13.2 53.0 375.5 176.42 

4.85 15. 9 376.5 181. 28 

18.4 33.1 379.3 232.80 

3.65 12. 6 380.5 237.18 

21.9 25.0 383.1 294.12 

21.9 24.2 385.2 340.10 

-- -- 388.2 -- -- -- 389.4 -- . 80 18. 0 390.1 0.56 

4.55 27. 6 390.7 3.29 

26.9 18.4 393. 1 67.85 

29.7 15.9 393.7 85.67 

-- -- 398.7 -- -- -- 401. 1 --

9.85 58. 1 402.4 -- -- -- 408.4 -- -- -- 409.3 -- -- 410.9 -- -- -- 413.8 -- -- -- 416.5 -- -- -- 421. 1 -- -- -- 423.1 -- -- -- 425.2 -- -- -- 427.5 -- --

I -- 431.0 -- -- -- 437.6 --
P- 97 ~udstone, cherty----------------------- -- . 6 -- -- 438.2 

P- 96 ~udstone ------------------------------ -- 2. 1 -- -- 440.3 

P- 95 ~udstone 

- _________ .. __ ----------------- -- 2.9 -- -- 443.2 

P- 94 Siltstone------------------------------- -- 2. 3 -- -- 445.5 

P- 93 ~udstone------------------------------ -- 1.4 -- -- 446.9 

P- 92 Siltstone------------------------------- -- . 7 -- -- 447.6 

P- 91 ~udstone, phosphatic------------------- 6353-~AW . 4 14.3 53. 1 448.0 

P- 90 Siltstone; fos. col. no. 12513 ------------- -- 3. 5 -- -- 451.5 

P- 89 Chert --------------------------------- -- 2.2 -- -- 453.7 

P- 88 ~udstone ------------------------------ 6352- RAS 0 5 4.05 78.6 454.2 

P- 87 Carbonate rock------------------------- -- . 7 -- -- 454.9 

P- 86 Carbonate rock------------------------- -- 1.7 -- -- 456.6 

P- 85 Chert ---------------------- ___________ -- .4 -- -- 457.0 

P- 84 ~udstone------------------------------ -- 1.1 -- -- 458.1 

P- 83 Carbonate rock ------------------------ -- 3.6 -- -- 461.7 

P- 82 ~udstone, carbonatic ------------------- 6350- RAS 0 8 1. 75 52.6 462.5 

P- 81 Chert --------------------------------- -- 4.8 -- -- 467.3 

P- 80 ~udstone------------------------------ -- 1.2 -- -- 468.5 

P- 79 Chert, argillaceous -------------------- -- 1.7 -- -- 470.2 

P- 78 ~udstone, calcareous------------------- -- 3.2 -- -- 473.4 

P- 77 Chert, argillaceous--------------------- -- 6. 1 I -- I -- I 479.5 

[:\.:> P- 76 ~udstone, calcareous and chert; fos. CD col. no. 12512----------=--------------- -- 1.6 -- -- 481. 1 

P- 75 ~udstone, carbonatic ------------------- 6349- RAS 1.1 4.10 63.3 482.2 

P- 74 ~udstone, carbonatic and chert---------- -- 1.6 -- -- 483.8 

P- 73 Chert, argillaceous--~------------------ -- 1.3 -- -- 485.1 

P- 72 I Carbonate rock, argillaceous; fos. 

col. no. 12511--- -------------~-------- 6348- RAS . 8 ·5. 35 35.3 485.9 I 4.28 

P- 71 Chert --------------------------------- 6347- RAS . 8 3.95 70.8 486. 7 3.16 

P- 70 ~udstone, carbonatic ------------------- -- 2.3 -- -- 489.0 

P- 69 ~udstone, carbonatic ------------------- -- 1.1 -- -- 490. 1 

P- 68 ~udstone, carbonatic and chert---------- -- 4.3 -- -- 494.4 

P- 67 ~udstone, cherty, carbonatic ------------ -- 1.1 -- -- 495.5 

P- 66 Limestone ----------------------------- -- 2.4 -- -- 497.9 

P- 65 ~udstone, carbonatic ------------------- 6346- RAS . 9 4.65 65.6 498.8 

P- 64 ~udstone, carbonatic and chert---------- -- 1.8 -- -- 500.6 

P- 63 ~udstone ------------------------------ -- 1. 3 -- -- 501.9 

P- 62 ~udstone, carbonatic ------------------- -- 1.8 -- -- 503.7 

P- 61 ~udstone, carbonatic, phosphatic-------- 6345- RAS .4 8.85 44.8 504. 1 

P- 60 ~udstone, carbonatic and chert---------- -- 1.3 -- -- 505.4 

P- 59 ~udstone, carbonatic ------------------- -- 1.4 -- -- 506.8 

P- 58 Carbonate rock; fos. col. no. 12510------- -- 1.8 -- -- 508.6 

P- 571 ~udstone, carbonatic ------------------- 6344- RAS 0 5 7.25 40.9 509.1 

P- 56 ~udstone, carbonatic ------------------- -- 1.3 -- -- 510.4 
CN 

0 

Bed 

no. 

P-55 

P-54 

P-53 

P-52 

P-51 

P-50 

P-49 

P-48 

P-47 

P-46 

P-45 

P-44 

P-43 

P-42 

P-41 

P-40 

P-39 

P-38 

P-37 

P-36 

P-35 

P-34 

P-33 

P-32 

P-31 

P-30 

P-29 

P-28 

P-27 

P-26 

P-25, 

P-24 

P-23 

P-22 

P-21 

P-:-20 

P-19 

P-18 

P-17 

Rock description 

~udstone -------------------------------

~udstone ------------------------------- ~udstone, carbonatic; fos. col. no. 12509 --

~udstQne ------------------------------- ~udstone -------------------------------

~~dstone ------------------------------- ~udstone, carbonatic --------------------

Carbonate rock; fos. col. no. 12508 -------- Mudstone, carbonatic; fos. col. no. 12507 --

Covered interval ------------------------

Carbonate rock--------------------------

Mudstone, carbonatic; fos. col. no. 12506 -- Carbonate rock--------------------------

Carbonate rock, argillaceous; fos. col. 

no. 12505------------------------------

~udstone, cherty; fos. col. no. 12505 ------

Mudstone, cherty; fos. col. no. 12504 ------

Mudstone, carbonatic --------------------

Mudstone, carbonatic --------------------

~udstone, carbonatic -------------------- ~udstone, carbonatic; fos. col. no. 12503 --

Mudstone, carbonatic"; fos. col. no. 12502 --

~udstone ------------------------------- Carbonate rock, argillaceous ------------- Carbonate rock, cherty-------------------

CarQonate rock, argillaceous -------------

Mudstone -------------------------------

Mudstone -------------------------------

Mudstone -------------------------------

Mudstone ------------------------------- Mudstone, carbonatic -------------------:--

Mudstone, carbonatic --------------------

Mudstone, carbonatic -------------------- Mudstone, carbona tic --------------------

~udstone, carbonatic --------------------

Mudstone, carbonatic --------------------

Mudstone, carbonatic -------------------- Carbonate rock, argillaceous -------------

Carbonate rock, argillaceous -------------

Phosphate .rock_, carbonatic ---------------

Fort Douglas-Continued 

Sample Thickness no. (feet) 

-- 3.3 

-- 4.2 

-- 4. 1 

-- 3.5 

-- 4.7 

-- 1.2 

-- 3.6 

-- 1.5 

-- 2.9 

-- u.s 

-- 1.9 

-- 4.6 

-- 1.8 

-- 3.6 

-- 4.5 

-- 5.5 

-- 5.3 

-- 2.9 

-- 1.2 

-- 2.9 

-- 5.9 

-- 2.3 

-- 2.6 

-- 2.4 

-- 4. 1 

-- 3.7 

-- 11.0 

-- 1.6 

-- 2.0 

-- 2.9 

-- 3.8 

-- 5.2 

-- 4.8 

-- . 9 

-- 5. 1 

-- 2.3 

6343- TMC 1.4 

6342- TMC 1.1 

6341-TMC 1.5 

Chemical analyses Cumulative Thickness x (percent) 

AClct thicktless percent P 20 

P205 insoluble (feet) (cumulativef 

-- -- 513.7 -- -- -- 517.9 -- -- -- 522.0 -- -- -- 525.5 -- -- -- 530.2 -- -- -- 531.4 -- -- -- 535.0 -- -- -- 536.5 -- -- -- 539.4 -- -- -- 551.2 --

-- -- 553.1 -- -- -- 557.7 -- -- -- 559.5 --

-- -- 563.1 -- -- -- 567.6 -- -- -- 573.1 -- -- -- 578.4 -- -- -- 581.3 -- -- -- 582.5 -- -- -- 585.4 --

-- -- 591.3 -- -- -- 593.6 -- -- -- 596.2 -- -- -- 598.6 -- -- -- 602.7 -- -- -- 606.4 -- -- -- 617.4 -- -- -- 619.0 -- -- -- 621.0 -- -- -- 623.9 --

-- -- 627.7 -- -- -- 632.9 -- -- -- 637.7 -- -- -- 638.6 -- -- -- 643.7 -- -- -- 646.0 -- 6.25 23. 1 647.4 8.75 

7.75 24.1 648.5 17.28 

21. 1 16. 1 650.0 48.92 
P-16 

P-15 

P-14 

P-13 

P-12 

P-11 

P-10 

P- 9 

P- 8 

P- 7 

P- 6 

P- 5 

P- 4 

P- 3 

P- 2 

PL-19 

L-18 w L-17 ~--" L-16 

L-15 

L-14 

L-13 

L-12 

L-11 

L-10 

L- 9 

L- 8 

L- 7 

L- 6 

L- 5 

L- 4 

L- 3 

L- 2 

L- 1 

Carbonate rock, argillaceous--------------

Mudstone, carbonatic --------------------- Mudstone, carbonatic --------------------- Mudstone, carbonatic --------------------- Mudstone, carbonatic; fos. col. no. 

12517 ---------------------------------

Mudstone, carbonatic --------------------- Mudstone, carbonatic --------------------- Carbonate rock, argillaceous, phosphatic---

Mudstone carbonatic --------------------- Mudstone: carbonatic ---------------------

Mudstone--------------------------------

Mudstone carbonatic --------------------- Mudstone~-------------------------------

Mudstone, carbonatic --------------------- Covered interval-----------------------'--

Phosphate rock, carbonatic 

6340- TMC 

6339- TMC 

2.7 

2.6 

5.3 

1.3 

1.1 

4.6 

2.2 

.4 

2.6 

2. 1 

. 9 

3.2 

1.3 

• 7 

. 6 

1.2 

7.60 

10. 1 

Lower member of Park City formation {?) 

Carbonate rock -------------------------- Carbonate rock ------&-------------------

Sandstone ------------------------------- Siltstone -------------------------------- Siltstone --------------------------------

Sandstone--------------------------------

Sandstone--------------------------------

Carbonate rock -------------------------- Covered interval ------------------------- Sandstone--------------------------------

Carbonate rock -------------------------- Sandstone--------------------------------

Carbonate rock -------------------------- Sandstone--------------------------------

Sandstone--------------------------------

Sandstone--------------------------------

Sandstone and sandy carbonate rock --------

Carbonate rock -------------------------- Sandstone--------------------------------

60~ 0 

28.0 

14.0 

16.0 

31.0 

54.0 

30.0 

7.0 

(?) 

52.0 

1.5 

6.5 

7.0 

18.0 

38.0 

60.0 

30.0 

25.0 

7.0 

Weber formation 

31. 2 652. 7 

655.3 

660.6 

661.9 

663.0 

667.6 

669.8 

23.7 670.2 

672.8 

674.9 

675.8 

679.0 

680.3 

681.0 

681.6 

682.8 

-

-

60.0 

88.0 

102.0 

118.0 

149.0 

203.0 

233.0 

240.0 

- *52. 0 

53.5 

60.0 

67.0 

85.0 

123.0 

183.0 

213.0 

238.0 

**245.0 

Cw-1 I Sandstone-----~-------------~~-~~------::~1 -- 1 100. J -- J ----r 100. I 

* Cumulative data incomplete because of missing information. Computations start from zero after interruption. 

** Note incompleteness of cumulative data. 

I 69.44 
Sols Canyon, Utah, lot 1348 

Park City formation measured and sampled in outcrop and hand trench on east side of Sols Canyon, NWtswt sec. 2, T. 2 N., R. 18 E., 

Daggett County, Utah. Beds strike N. so• E. and dip 38• N. Section measured and sampled by R. A. Smart, T. M. Cheney, and 

M.A. Warner in June 1951. Samples analyzed by Trace Elements Section laboratory, Denver, Colo. 

Chemical analyses 

Bed Sample no. Rock description Thickness (percent) 

no. (feet) I ACid 

-----

P205 insoluble -L-. 

Upper member of Park City formation-top not exposed 

u- 1 

u- 6 

u- s 

u- 4 

u- 3 

u- 2 

u- 1 

Carbonate rock, cherty ------------------ Carbonate rock-----------------~--------

Covered interval ------------------------

Carbonate rock ------------------------- Covered interval ------------------------

Carbonate rock ------------------------- Covered interval ------------------------

9. 1 

5.4 

4.0 

1.8 

3.8 

1.6 

3.0 

Phosphatic shale member of Park City formation 

w P-47 Siltstone. carbona tic--------------------- -- 4.0 1:\:l P-46 Mudstone and chert---------------------- -- . 5 

P-45 Mudstone, car.bonatic -------------------- -- 2.5 

P-44 Mudstone, carbonatic -------------------- -- 2.5 

P-43 Carbonate rock, argillaceous------------- 6285-MAW 1.7 I 3.60 I 

P-42 Mudstone ------------------------------- 6484-MAW . 6 

P-41 Mudstone, carbonatic -------------------- 6283-MAW 1.7 Z.IO I P-40 Mudstone, carbonatic -------------------- 6282-MAW 1.2 7.25 

P-39 Mudstorie, carbona tic -------------------- 6281-MAW 3.4 2.75 

P-38 Weathered zone ------------------------- -- 1.1 --

P-37 Carbonate rock, argillaceous, phosphatic -- 6280-MAW 1.6 11. 7 

I P-36 Carbonate rock, phosphatic--------------- 6279-MAW • 8 14.2 

P-35 Carbonate rock-------------------------- 6278-MAW 1.0 7.45 

P-34 Mudstone, carbonatic, and phosphatic, 

carbona tic mudstone-------------------- 6277-MAW 1.0 10.7 

P-33 Carbonate rock, argillaceous, phosphatic-- 6276-MAW . 6 9.00 I 

P-32 Phosphate rock and phosphatic, carbonatic 

mudstone------------------------------ 6275-MAW • 5 15.8 

P-31 I Mudstone, carbonatic -------------------- 6274-MAW . 5 7.25 

P-30 Mudstone, carbonatic, and carbonatic 

phosphate rock------------------------- 6273-MAW • 7 13.8 

P-291 Mudstone, carbonatic -------------------- 6272-MAW 1.2 6.80 

P-28 Mudstone, silty ------------------------- -- 1.4 

39.8 

58. 7 

44.5 

60.3 

35.6 

12. 7 

10.3 

27.9 

27.4 

32.5 

43.5 

32.6 

51.0 

Cumulative Thic'kness x 

thickness percent P 20 

(feet) (cumulativef 

9. 1 

14.5 

18. 5 

20.3 

24.1 

25.7 

28.7 

-

-

4.0 

4.5 

7.0 

9.5 

11. 2 

11.8 

13.5 **3.57 

14.7 12.27 

18. 1 21.62 

19.2 -- 20.8 *18.72 

21.6 30.08 

22.6 37.53 

23.6 48.23 

24.2 53.63 

24.7 61.53 

25.2 65.16 

25.9 74.82 

27.1 82.98 

28.5 
P-27 Carbonate rock ------------------------- -- 1.1 -- -- 29.6 

P-26 Mudstone, carbonatic -------------------- 6271- RAS 1.2 5. 45 57.0 30.8 

P-25 Mudstone, carbonatic -------------------- -- 2.0 -- -- 32.8 

P-24 Mudstone, carbonatic ----.=--------------- 6270- RAS 1. 4 4.60 59.6 34.2 

P-23 Mudstone, carbonatic -------------------- 6269- RAS 1.7 4.85 58.0 35.9 

P-22 Brecciated zone------=------------------ -- 1.3 -- -- 37.2 

P-21 Mudstone, phosphatic-------------------- 6268- RAS . 4 7.80 62.8 37.6 

P-20 Mudstone------------------------------- 6267- RAS . 8 6.80 72.4 38.4 

P-19 Carbonate rock, phosphatic, argillaceous-- 6266- RAS . 7 10.9 25.6 39. 1 

P-18 Mudstone, carbonatic -------------------- -- 1.3 -- -- 40.4 

P-17 Mudstone, carbonatic -------------------- 6265- RAS 2.2 5.05 43.7 42.6 

P-16 Mudstone------------------------------- -- . 7 -- -- 43.3 

P-15 Mudstone, carbonatic -------------------- -- 2.4 -- -- 45.7 

P-14 Mudstone, carbona tic-------------------- 6264- RAS 1.2 7.25 46. 1 46.9 

P-13 Carbonate rock ------------------------- -- 1.8 -- -- 48.7 

P-12 Carbonate rock, argillaceous------------- 6263- RAS 1.9 7.60 35.4 50.6 

P-11 Carbonate rock, phosphatic, argillaceous-- 6262- RAS . 8 11.9 24.3 51.4 

P-10 Carbonate rock ------------------------- -- 2. 1 -- -- 53.5 

P- 9 Carbonate rock, phosphatic -------------- 6261- RAS . 4 13.3 12.2 53.9 

P- 8 Mudstone, carbona tic-------------------- 6260- RAS . 8 7.50 46.8 54.7 

P- 7 Carbonate rock, argillaceous------------- 6259- RAS . 6 8.62 24.4 55.3 

P- 6 Covered interval ------------------------ -- 1.3 -- -- 56.6 

2::5 P- 5 Carbonate rock, phosphatic, argillaceous-- 6258- RAS 1. 1 10.4 24. 1 57.7 

P- 4 Carbonate rock, phosphatic, argillaceous-- 6257- RAS 1. 2 11. 3 22.0 58.9 

P- 3 Carbonate rock, phosphatic -------------- 6256- RAS 1.7 16.4 4.2 60.6 

P- 2 I Mudstone, phosphatic-------------------- 6255- RAS 1.3 13.7 36.2 61.9 

Beds P-2 through P-7 are highly 

weathered and of questionable thickness 

and continuity. 

P- 1 I Carbonate rock, phosphatic -------------- I 6254- TMC I 1.3 ~.8 I 8. 2 I 63.2 

Lower member of Park City formation 

L-17 Sandstone, carbonatic-------------------- -- 17.6 -- -- 17.6 

L-16 Mudstone, carbonatic -------------------- -- 3.4 -- -- 21.0 

L-15 Sandstone, carbonatic-------------------- -- 6.4 -- -- 27.4 

L-14 Sandstone, carbonatic-------------------- -- 15.0 -- -- 42.4 

L-13 Sandstone, carbonatic-------------------- -- 10. 5 -- -- 52.9 

L-12 Sand$tone, argillaceous------------------ -- 3.5 -- -- 56.4 

L-11 Sandstone, carbonatic-------------------- -- 10. 5 -- -- 66.9 

L-10 Siltstone, carbonatic -------------------- -- 2.5 -- -- 69.4 

L- 9 Sandstone, carbonatic ------------------- -- 8.5 -- -- 77.9 

* Cumulative data incomplete because of mh .. sing information. Computations start from zero after interruption. 

** Note incompleteness of cumulative data. 

* 11.44 

25.00 

52.88 

70.69 

I **92.53 
w 

1-f:>. 

Sols Canyon-Continued 

Chemical analyses Cumulative Bed · Rock description Sample Thickness (percent} thickness no. no. (feet} P2o5 

Acid (feet} insoluble 

L- 8 Siltstone, carbonatic -------------------- -- 5.0 -- -- 82.9 

L- 7 Sandstone, carbonatic-------------------- -- 23.0 -- -- 105.9 

L- 6 Covered interval ------------------------ -- 3.5 -- -- 109.4 

L- 5 Sandstone, carbona tic-------------------- -- 6.0 -- -- 115.4 

L- 4 Sandstone, carbonatic------------·------- -- 23.0 -- -- 138.4 

L- 3 Covered interval ------------------------ -- 20.0 -- -- 158.4 

L- 2 Sandstone ------------------------------ -- 25.0 -- -- 183.4 

L- 1 Covered interval ------------------------ -- 23.0 -- -- 206.4 

Weber formation- upper part only 

Cw-1 rsa~~t~~~~~-~arbonatic-------=-=-=-===~------- I -- I 205.0 J- -- -Tu -==~=r 205.0 J 

Thickness x 

percent P 20 

(cumulativef 

--

--

--

--

--

--

--

--
Strawberry Valley, Utah, lot 1371 

Park City formation measured and sampled in outcrop and bulldozer trenches in Willow Creek Canyon, NW! sec. 14, T. 2 S., R. 12 W., 

Wasatch County, Utah. Beds strike N. 30° W. and are overturned toward the west; dips range from 35° W. to near vertical. 

Section measured and sampled by R. A. Smart, T. M. Cheney, and R. G. Waring in September 1951. Samples analyzed by U. S. 

Bureau of Mines laboratory, Albany, Oreg. 

Bed Sample 

Chemical analyses Cumulative Thickness (percent) 

no. 

U-17 

U-16 

U-15 

U-14 

U-13 

U-12 

U-11 

U-10 

w u- 9 01 u- 8 

.,.. u- 1 

u- 6 

u- 5 

u- 4 

u- 3 

u- 2 

u- 1 

P-96 

P-95 

P-94 

P-93 

P-92 

P-91 

P-90 

P-89 

P-88 

Rock description no. (feet) P205 

Woodside formation-not measured 

Upper member of Park City formation 

Carbonate rock ------------------------- Cnert breccia --------:-------------------

Carbonate rock ------------------------- Covered interval ------------------------ Sandstone, carbona tic--------------------

Carbonate rock ------------------------- Carbonate rock and chert ----------------

Covered interval ------------------------ Sandstone, carbona tic--------------------

Chert and carbonate rock ------·----------

Carbonate rock ------------------------- Sandstone and sandy carbonate rock ------- Sandstone, carbonatic--------------------

Chert, sandstone, ~d phosphatic sandstone; 

fos. col. no. 12625 ---------------------

Sandstone ------------------------------

Sandstone-------------------------------

Sandstone and chert ---------------------

75.0 

1.0 

7.0 

48.0 

12.0 

19.0 

10.0 

90.0 

142.0 

·44. 0 

41.0 

39.7 

6.3 

7. 5 

• 9 

~ 8 

2.4 

I Acid 

insoluble 

Phosphatic shale member of Park City formation (?) 

Siltstone--------------------------------

Siltstone--------------------------------

Siltstone------------------·--------------

Siltstone--------------------------------

Siltstone--------------------------------

Siltstone--------------------------------

Phosphate rock, carbona tic and mudstone--

Siltstone--------------------------------

Mudstone, phosphatic, carbonatic 

and mudstone--------------------------

6618-RGW 

6617-RGW 

6616-RGW 

6615-RGW 

4.5 

6.3 

2. 1 

5.5 

14.5 

1.2 

1.1 

2.5 

1.0 

3.3 

16. 1 

2.8 

4.4 

67.5 

34.4 

66.0 

62·. 5 

* Fossil collection made by J. E. Smedley, Paleontology and Stratigraphy Branch, U. S. Geological Survey. 

* Note incompleteness of cumulative data because of missing information. 

thickness 

(feet) 

75.0 

76.0 

83.0 

131.0 

143.0 

162.0 

172.0 

262.0 

404.0 

448.0 

489.0 

528.7 

535.0 

542.5 

543.4 

544.2 

546.6 

4.5 

10.8 

12.9 

18.4 

32.9 

34. 1 

35.2 

37.7 

38.7 

Thickness x 

percent p 2o 

(cumulativef' 

*3.96 

21.67 

28.67 

33.07 
VJ 

rn 

Bed 

no. 

P-87 

P-86 

P-85 

P-84 

P-83 

P-82 

P-81 

P-80 

P-79 

P-78 

P-77 

P-76 

P-75 

P-74 

P-73 

P-72 

P-71 

P-70 

P-69 

P-68 

P-67 

P-66 

P-65 

P-64 

P-63 

P-62 

P-61 

P-60 

P-59 

P-58 

P-57 

P-56 

P-55 

P-54 

P-53 

P-52 

P-51 

P-50 

Rock description 

Siltstone and phosphate rock--------------

Siltstone, carbona tic---------------------

~udstone-------------------------------

Chert and mudstone --------.------------- ~udstone-------------------------------

~udstpne-------------------------------

~udstone-------------------------------

Mudstone, phosphatic and phosphate rock .,_ 

~udstone, carbonatic --------------------

~udstone, carbonatic --------------------

Siltstone ------------------------------- Siltstone, carbonatic--------------------- Siltstone, carbona tic---------------------

Phosphate rock, argillaceous-------------

Carbonate rock, silty, and carbonatic 

mudstone -----------------------------

~udstone, phosphatic--------------------

Phosphate rock ----------~-------------- Siltstone, carbonatic--------------------- Carbonate rock, silty--------------------

Carbonate rock -------------------------

Siltstone, carbonatic, siltstone, and chert -

~udstone, phosphatic, carbonatic --------- Phosphate rock and mudstone-------------

Phosphate rock ------~------------------ Carbonate rock -------------------------

~udstone-------------------------------

Carbonate rock ------------------------- Siltstone ------------------------------- Siltstone, cherty ------------------------

Siltstone, cherty ------------------------

~udstone and chert breccia -------------- Siltstone, carbonatic, and carbonatic 

chert breccia---------------------.-----

Chert and phosphatic mudstone -----------

Siltstone -----------------------------:-- Siltstone, chert, and mudstone -----------

Chert ---------------------------------- Siltstone, carbona tic --------------------

Chert ----------------------------------

Strawberry Valley-Continued 

Chemical analyses 

Sample Thickness (percent) 

no. (feet) Acid P205 insoluble 

6614-RGW 1.0 12.6 42.5 

-- 1.2 -- -- -- 1.1 -- -- -- . 9 -- -- ··- 2.2 -- --

-- 5.3 -- -- -- . 5 -- -- 6613-T~C . 5 14.4 46.2 

-- 4.9 -- -- -- 3.4 -- --

-- 9. 1 -- -- -- 3.0 -- -- 6612-RGW 1.2 7.2 45.7 

6611-RGW . 4 22.5 23.9 

6610-RGW 1.7 6.2 39. 1 

6609-RGW . 6 12.7 38.5 

6608-RGW . 5 25.6 12.9 

-- 1.9 -- -- 6607-RGW 1.7 4.5 31. 0 

-- • 8 -- --

-- 3.5 -- -- 6606-RGW 1.1 12.3 35.8 

6605-RGW 1.5 16.5 30.0 

6604-RGW . 5 26. 1 12.5 

-- 1.5 -- --

-- . 5 -- -- -- 1.5 -- -- -- . 7 -- -- -- 2.7 -- -- -- 1.8 -- --

-- 1.8 -- --

-- 1.3 -- -- -- . 9 -- -- -- . 9 -- -- -- 1.8 -- --

-- 1.9 -- -- -- 1.7 -- -- -- 1.0 -- --

Cumulative Thickness x 

thickness percent P 2

0 

(feet) (cumulativef 

39.7 *45.67 

40.9 ----- 42.0 -- 42.9 -- 45. 1 --

50.4 -- 50.9 -- 51.4 -- 56.3 -- 59.7 -- 68.8 -- 71.8 -- 73.0 *8.64 

73.4 17.64 

75.1 28. 18 

75.7 35.80 

76.2 *48.60 

78.1 -- 79.8 -- 80.6 --

84.1 -- 85.2 -- 86.7 -- 87.2 -- 88.7 --

89.2 -- 90.7 -- 91.4 -- 94.1 -- 95:9 --

97.7 -- 99.0 -- 99.9 -- 100.8 -- 102.6 -- 104.5 -- 106.2 -- 107.2 --
P-49 Siltstone, cherty --------------------.. --- -- 2. 5 -- -- 109.7 

P-48 Chert and siltstone ---.------------------- -- 1.6 -- -- 111.3 

P-47 Phosphate rock, carbonatic and siltstone--- 6603-RGW .4 17.9 32. 1 111.7 

P-46 Siltstone ------------------------------- -- 2.5 -- -- 114.2 

P-45 Siltstone and argillaceous, carbonatic 

phosphate rock ------------------------ -- 1.0 -- -- ll5. 2 

P-44 Siltstone and carbonatic phosphate rock---- -- . 6 -- -- 115.8 

P-43 ~udstone------------------------------- -- 3.9 -- -- 119.7 

P-42 ~udstone------------------------------- -- 1.1 -- -- 120.8 

P-41 ~udstone------------------------------- -- 1.1 -- -- 121.9 

P-40 ~udstone------------------------------- -- 1.0 -- -- 122.9 

P-39 ~udstone and phosphatic mudstone-------- -- 1.1 -- -- 124.0 

P-38 Phosphate rock, carbonatic--------------- 6602- RAS . 6 18.5 14.6 124.6 

P-37 ~udstone, phosphatic, carbonatic --------- 6601- RAS 1.7 8.7 36.0 126.3 

P-36 ~udstone------------------------------- -- 1.8 -- -- 128. 1 

P-35 ~udstone, carbonatic -------------------- -- 1.5 -- -- 129.6 

P-34 Phosphate rock, argillaceous------------- 6600- RAS . 5 23.9 17. 3 130. 1 *11. 95 

P-33 Carbonate rock, argillaceous------------- 6599- RAS 1.6 2.4 31.0 131. 7 15.79 

P-32 Phosphate rock, argillaceous------------- 6598- RAS 1.1 20.7 24.9 132.8 38.56 

P-31 ~udstone, phosphatic-------------------- 6597- RAS . 9 12. 7 40.5 133.7 49.99 

P-30 Carbonate rock, argillaceous------------- 6596- RAS 1.1 4.3 36.5 134.8 54.72 

w P-29 ~udstone------------------------------- -- 1.5 -- -- 136.3 

-::~ P-28 ~udstone------------------------------- -- 2. 1 -- -- 138.4 

P-27 ~udstone------------------------------- -- 1.5 -- -- 139.9 

P-26 Nludstone------------------------------- -- 2.5 -- -- 142.4 

P-25 Nludstone, carbona tic_:------------------ -- . 6 -- -- 143.0 

P-24 Nludstone------------------------------- -- 1.1 -- -- 144.1 

P-23 ~udstone------------------------------- -- 4 .. 5 -- -- 148.6 

.P-22 ~udstone, phosphatic-------------------- 6595- RAS • 9 8.3 53.0 149.5 *7.47 

P-21 ~udstone, phosphatic-------------------- 6594- RAS . 5 15. 7 42.4 150.0 15.32 

P-20 ~udstone, carbonatic -------------------- 6593- RAS • 8 2.8 63.3 150.8 17.56 

P-19 ~udstone, phosphatic-------------------- 6592- RAS . 5 8.3 58.5 151.3 *21. 71 

P-18 Siltstone------------------------'"------- -- 1.2 -- -- 152.5 -- P-17 Siltstone, carbonatic--------------------- -- 1.0 -- -- 153.5 

P-16 Carbonate rock; fos. col. no. 12626-------- -- 2.9 -- -- 156.4 

P-15 Siltstone-------------------------------- -- 3.0 -- -- 159.4 

P-14 Siltstone-------------------------------- -- 2.3 -- -- 161.7 

P-13 Siltstone-----------·--------------------- -- . 7 -- -- 162.4 

P-12 Siltstone-------.------------------------- -- . 9 -- -- 163.3 

P-11 Siltstone-------------------------------- -- 1.5 -- -- 164.8 

P-10 Siltstone----:.---------------------------- -- 2. 7 -- -- 167.5 

P- 9 1 Siltstone-------------------------------- -- . 8 -- -- 168.3 

* Note incompleteness of cumulative data because of missing information. 
Strawberry Valley-Continued 

Chemical analyses Cumulative Thickness x Bed Rock description Sample Thickness {percent) thickness percent P 2

0 no. no. (feet) P205 AClO (feet) (cumulativef insoluble 

- P- 8 Chert, ·argillaceous---------------------- -- 3. 5 -- -- 171.8 -- P- 7 ~udstone, cherty------------------------ -- 3.4 -- -- 175.2 -- P- 6 ~udstone, cherty------------------------ -- 1.7 -- -- 176.9 -- P- 5 Chert, argillaceous---------------------- -- 2.9 -- -- 179.8 -- P- 4 ~udstone --------- ____ :.. ----------------- -- 1.5 -- -- 181. 3 -- P- 3 ~udstone ------------------------------- 6591- RAS . 7 7. 3 68. 1 182.0 -- P- 2 Siltstone ------------------------------- -- 1.4 -- -- 183.4 -- P- 1 Siltstone ------------------------------- -- 3.3 -- -- 186.7 -- Lower member of Park City,forma.tion {?) 

L-62 Covered interval ------------------------ -- 1. 8 -- -- 1.8 

L-61 Sandstone ------------------------------ -- 1.1 -- -- 2.9 

L-60 Sandstone ------------------------------ -- 5.7 -- -- 8.6 

L-59 Sandstone ------------------------------ -- 5. 1 -- -- 13.7 

L-58 Sandstone -----------~------------------ -- 8.0 -- -- 21.7 

gs L-57 Covered interval ---------------.-... ------- -- 42.0 -- -- 4::S.7 

L-56 Sandstone, carbona tic-------------------- -- 40.0 -- -- 83.7 

L-55 Covered interval ------------------------ -- 13.0 -- -- 96.7 

L-54 Sandstone, carbonatic ------------------- -- 8.0 -- -- 104.7 

L-53 Sandstone, carbonatic ------------------- -- 19.5 -- -- 124.2 

L-52 Covered interval ------------------------ -- 11.0 -- -- 135.2 

L-51 Covered interval ------------------------ -- 50.0 -- -- 185.2 

L-50 Carbonate rock, cherty ------------------ -- 13.0 -- -- 198.2 

L-49 Covered interval ------------------------ -- 15.0 -- -- 213.2 

L-48 Carbonate rock ------------------------- -- 3.8 -- -- 217.0 

L-47 Silts tone ------------------ ----- -------- -- 1.1 -- -- 218. 1 

L-46 Carbonate rock, cherty------------------ -- 3.0 -- -- 221. 1 

L-45 Covered interval ------------------------ -- 10.0 -- -- 231. 1 

L-44 Covered interval ------------------------ -- 10.0 -- -- 241.1 

L-43 Covered interval --·---------------------- -- 9.0 -- -- 250.1 

L-42 Carbonate rock ------------------------- -- 15.0 -- -- 265.1 

L-41 Sandstone, carbonatic ---------.:.--------- -- '16. 0 -- -- 281.1 

L-40 Covered interval ------------------------ -- 3.0 -- -- 284.1 

L-39 Carbonate rock, cherty ------------------ -- 1.3 -- -- 285.4 

L-38 Carbonate rock ------------------------- -- 5.4 -- -- 290.8 

L-371 Siltstone, carbonatic -------------------- -- 4.0 -- -·· 294.8 

L-36 Chert and carbonatic siltstone ------------ -- 2.4 -- -- 297.2 
L-35 

L-34 

L-33 

L-32 

L-31 

L-30 

L-29 

L-28 

L-27 

L-26 

L-25 

L-24 

L-23 

L-22 

L-21 

L-20 

L-19 

L-18 

L-17 

L-16 

L-15 

CAJ L-14 co L-13 

L-12 

L-11 

L-10 

L- 9 

L- 8 

L- 7 

L- 6 

L- 5 

L- 4 

L- 3 

L- 2 

L- 1 

Covered interval ------------------------

Siltstone, carbona tic -------------------- Carbonate rock, sandy-------------------

Siltstone -------------------------------

Mudstone, carbonatic --------------------

Siltstone -------------------------------

Siltstone -------------------------------

Siltstone ------------------------------- Covered interval ------------------------

Siltstone ---------------------.:---------

Siltstone -------------------------------

Siltstone - --------'"---------------------

Siltstone ------------------------------- Mudstone-------------------------------

Siltstone -------------------------------

Carbonate rock, sandy-------------------

Carbonate rock, sandy-------------------

Siltstone, carbona tic --------------------

Sandstone, carbonatic ------------------- Siltstone, carbona tic --------------------

Carbonate rock, sandy-------------------

Carbonate rock, sandy-------------------

Carbonate rock ------------------------- Carbonate rock, sandy-------------------

Sandstone ----------------------7-------

Carbonate rock -------------------------

Covered interval ------------------------

Carbonate rock ------------------------- Carbonate rock ------------------------- Covered interval------------------------

Carbonate rock, sandy-------------------

Carbonate rock ------------------------- Covered interval------------------------

Carbonate rock·------------------------

Carbonate rock -------------------------

12.0 

1.5 

1.7 

3.4 

1.7 

2.2 

1.9 

1.3 

7.0 

. 9 

1.7 

1.2 

4.2 

1.8 

0 9 

2.2 

4.7 

• 8 

1.7 

2.9 

1.1 

3.3 

18.0 

13.0 

6.0 

20.0 

70.0 

29.0 

50.0 

12. 0 

16.0 

22.0 

18.0 

32.0 

20.0 

Diamond Creek sandstone (?) 

--I 

309.2 

310.7 

312.4 

315.8 

317.5 

319.7 

,321. 6 

322.9 

329.9 

330.8 

332.5 

333.7 

337.9 

339.7 

340.6 

342.8 

347.5 

348.3 

350.0 

352.9 

354.0 

3"57.3 

375.3 

388.3 

394.3 

414.3 

484.3 

513.3 

563.3 

575.3 

591.3 

613.3 

631.3 

663.3 

683.3 

D- 1 I Sandstone, calcareous ------------------- I -- I (?) T- -- I -- I -- I --
f-1::>. 

0 

Little Diamond Creek, Utah, lot 1376 

Lower part of phosphatic shale member of Park City formation measured and sampled in old open pit mine under lease to American Smelting and Refining 

Company of Little Diamond Creek, StSE~ sec. 22, T. 8 S., R. 4 E., Utah County, Utah. Beds strike N. 20• W. and dip 30• NE. Section measured 

by ToM. Cheney and sampled by R. G. Waring in October 1951. Samples analyzed for P

2 0 5 and acid insoluble by U.S. Bureau of Mines laboratory 

Albany, Oreg., and for other constituents by Trace Elements Section laboratory, U. S. Geological Survey, Washington, D. Co 

Bed Sample Thickness Chemical analyses (percent) Cumulative Thickness x 

Rock description I I I Loss on I Acid thickness percent P 20 no. no. (feet) P205 Al2°3 Fe203 ignition insoluble (feet) (cumulativef 

Phosphatic shale member of Park City. formation-basal part only 

-- Covered interval ------------------------ -- -- -- -- -- -- -- -- -- P-5 Phosphate rock ------------------------- 6798-TMC 1. 7 30. 1 0.98 o. 74 8.20 5. 4 1.7 51. 17 

P-.4 Phosphate rock ------------------------- 6797-TMC 1.4 30. 1 . 84 . 77 8.87 6.6 3. 1 93.31 

P-3 Phosphate rock ------------------------- 6796-TMC 1.5 27.8 1. 08 . 76 6. 73 7.9 4.6 135. 01 

P-2 Phosphate rock ------------------------- 6795-TMC 1.2 26. 7 . 64 2.98 6.80 10.8 5.8 167.05 

Beds P-1 and P-2 measured 60 feet 

apart. The 0. 5-l. 5 feet of strata 

missing is probably similar to bed 

P-2. 

P-1 Dolomite ------------------------------- -- . 6 -- -- -- -- -- 6.4 -- -- Covered interval ------------------------ -- -- -- -- -- -- -- -- --

INT.-DUP. SEC., WASH., D.CI·96a2