Marion Peak Quadrangle, 

Fresno County, CaliforniaAnalytic Data 
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Marion Peak Quadrangle, 

Fresno County, CaliforniaAnalytic Data 

By JAMES G. MOORE 

U.S. GEOLOGICAL SURVEY BULLETIN 1986 
U.S. DEPARTMENT OF THE INTERIOR 

MANUEL LUJAN, jR., Secretary 

U.S. GEOLOGICAL SURVEY 

Dallas L. Peck, Director 

Any use of trade, product, or firm names 

in this publication is for descriptive purposes only 

and does not imply endorsement by the U.S. Government 

UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1991 

For sale by the 

Books and Open-File Reports Section 

U.S. Geological Survey 

Federal Center, Box 25425 

Denver, CO 80225 

Library of Congress Cataloging-in-Publication Data 

Moore, james Gregory, 1930-

Marion Peak quadrangle, Fresno County, California, analytic data I by james 

G. Moore 

p. em. - (U.S. Geological Survey bulletin ; 1986) 

Includes bibliographical references 

Supt. of Docs. no.: I 19:3:1986 

1. Granite-California-Fresno County-Analysis. 2. Volcanic ash, tuff, 

etc.-California-Fresno County-Analysis. 3. Geology, StratigraphicCenozoic. 4. Geology-California-Fresno County. I. Title. II. Series. 

QE75.89 no. 1986 

[QE462.G7] 

557.3 s-dc20 91-15520 

(557.94182] CIP 
CONTENTS 

Abstract 1 

Introduction 1 

General geology and age determinations 1 

Sampling and analytic methods 2 

Relation of Si02 to specific gravity, color index, and magnetic susceptibility 2 

Average granitic rock composition 3 

References 3 

FIGURES 

1. Generalized geologic map of Marion Peak quadrangle (Moore, 1978) showing 

locations of analyzed samples 7 

2. Si02 variation diagrams for analyzed granitic rocks from the Marion Peak 

quadrangle 8 

3. Classification scheme for granitic rocks from Streckeisen (1973) 9 

4. Modal plots of samples from 15 of 22 granitic masses in the Marion Peak quadrangle; 

large symbols are averagc!s 10 

5. Relation of Si02 content to volume percent mafic minerals and to specific gravity for 

about 200 analyzed granitic rocks in the Sierra Nevada between 37° and 38° N. 

latitude (Bateman and others, 1984) 12 

6. Relation of Si02 content to volume percent mafic minerals and to specific gravity for 

15 analyzed granitic rocks in the Marion Peak quadrangle 12 

7. Relation of magnetic susceptibility to volume percent of mafic minerals and to 

specific gravity for most of the 178 modally analyzed granitic rocks in the Marion 

Peak quadrangle (table 2) 13 

TABLES 

1. Chemical analyses and norms of granitic rocks 14 

2. Modal analyses of granitic rocks 18 

3. Chemical analyses and norms of Cenozoic volcanic rocks 22 

4. Some features of mapped and sampled granitic units 23 

5. Average chemical composition, in weight percent, of granitic rocks in the Marion 

Peak quadrangle 23 

Contents Ill 

Marion Peak Quadrangle, Fresno County, CaliforniaAnalytic Data 

By James G. Moore 

Abstract 

The Marion Peak 15-minute quadrangle includes about 

620 km2 on the west slope of the Sierra Nevada in Fresno 

County, California, between 36°45 1 and 37°001 N. latitude 

and 118°30 1 and 118°45 W. longitude. This report supplements the geologic map of the Marion Peak quadrangle 

by providing modal and chemical analyses of the granitic 

and volcanic rock samples. 

Granitic rocks of the batholith underlie 95 percent of 

the quadrangle area. Most of the remaining area is underlain 

by septa of pre-batholithic metamorphosed sediments and 

volcanic rocks which occur between the individual granitic 

masses. Cenozoic volcanic rocks underlie a small area, and 

they include an eroded dacitic volcanic center and scattered 

erosional remnants of basaltic lava flows. 

About 300 samples of typical plutonic and volcanic 

rocks were collected during the course of geologic mapping; 

of these, 30 granitic, 2 metavolcanic, and 9 Cenozoic 

volcanic rocks were chemically analyzed for their major elements, and most were also analyzed for selected trace 

elements. In addition, 178 samples of granitic rocks were 

analyzed modally for the volume percent of their constituent 

minerals. Measurements of specific gravity and magnetic 

susceptibility are also included. 

The average chemical composition of the granitic rocks 

in the quadrangle, estimated from the analyzed samples, is a 

silicic granodiorite that contains 69.2 weight percent Si02• 

INTRODUCTION 

The Marion Peak quadrangle includes about 620 km2 

on the west slope of the Sierra Nevada in Fresno County, 

California, between 36°45' and 37°00' N. latitude, and 

118°30' and 118°45' W. longitude. The quadrangle lies 

chiefly between the Middle and South Forks of the Kings 

River and is largely within Kings Canyon National Park. 

The crest of Monarch Divide, the high ridge between these 

forks of the Kings River, culminates at Mt. Harrington 

(11 ,005 feet) near the west quadrangle boundary, and 

Marion Peak (12,719 feet) near the northeast corner of the 

Manuscript approved for publication, March 25, 1990. 

quadrangle. Lowest elevations of the quadrangle are near 

the west boundary on the Middle Fork of the Kings River 

(4604 feet) and the South Fork (4138 feet). 

Granitic rocks of the Sierra Nevada batholithic complex underlie about 95 percent of the area of the quadrangle. 

This report supplements the geologic map of the Marion 

Peak quadrangle (Moore, 1978) by providing modal and 

chemical analyses of the granitic and volcanic rock samples. 

GENERAL GEOLOGY AND AGE 

DETERMINATIONS 

The geology of the quadrangle is dominated by granitic intrusions composing the Sierra Nevada batholithic 

complex, which was emplaced largely in the Cretaceous. 

Granitic rocks of the batholith underlie 95 percent of the 

quadrangle area. Most of the remaining area is underlain 

by thin septa of pre-batholithic metamorphosed sedimentary and volcanic rocks which occur between the individual granitic masses. Cenozoic volcanic rocks underlie 

a small area; they include an eroded dacitic volcanic center 

and scattered erosional remnants of basaltic lava flows. 

The oldest rocks of the quadrangle are small masses 

of generally silicic metavolcanic rocks preserved primarily 

as septa between individual granitic intrusive masses. In 

the northeast corner of the quadrangle, these metavolcanic 

rocks are closely associated with a mass of sheared granitic rocks cut by mafic dikes tentatively assigned to the 

Late Jurassic Independence dike swarm (Chen and Moore, 

1979). The metavolcanic rocks in the northeast corner are 

part of the south end of the Mount Goddard pendant in 

which radiometric ages of 131-143 Ma indicate a Late 

Jurassic age (Tobish and others, 1986). Silicic metatuffaceous rocks on the west-central margin of the quadrangle are part of the Boyden Cave pendant, which has 

yielded a radiometric age of 106 Ma (Saleeby and others, 

1990). Hence the metamorphosed metavolcanic rocks of 

the quadrangle span some 37 m.y. and apparently represent the volcanic cover associated with two general periods of plutonic intrusion' that occurred in the Late Jurassic 

and the mid-Cretaceous. 

General Geology and Age Determinations 
The Late Jurassic sequence of granitic rocks has not 

been dated within the quadrangle, but an age of 156 Ma 

(Tobish and others, 1986) for a granitic unit within the 

Mount Goddard pendant cut by mafic dikes north of the 

quadrangle provides a basis for estimating the age of the 

sheared granitic unit of similar character in the northeast 

comer of the quadrangle. 

Several masses of mid-Cretaceous hypabyssal and 

plutonic rocks associated with the metavolcanic rocks of 

the Boyden Cave pendant have been dated west of the 

quadrangle by U/Pb zircon and Rb/Sr bulk-rock isochron 

methods (Saleeby and others, 1990), which refme some of 

the earlier U/Pb age data of Chen and Moore (1982). 

Those that extend into the Marion Peak quadrangle are the 

schistose granodiorite of Tombstone Creek (102 Ma), 

metadacite porphyry of Boulder Creek (105±3 Ma), granite of Grand Dike (103±2 Ma), and granodiorite of Lightning Creek (100 Ma). 

K-Ar ages of samples collected outside the quadrangle that are a part of intrusive masses that extend into it 

include a biotite age of 81±3 Ma from granodiorite of the 

Cartridge Pass pluton (Dodge and Moore, 1968) and biotite ages of 80.4 Ma and a hornblende age of 86.1 Ma 

from the Paradise Granodiorite (Evernden and Kistler, 

1970). 

U/Pb ages of samples of Cretaceous granitic plutons 

collected within the quadrangle include Lookout Peak (97 

Ma), North Dome (89?Ma), Paradise (83--86 Ma), and the 

heterogeneous granite of North Mountain, which has failed 

to yield a concordant age (Chen and Moore, 1982). 

Cenozoic volcanic rocks within the quadrangle include the eroded Windy Peak dacitic volcanic neck and 

associated lava flows in the canyon of the Middle Fork of 

the Kings River, and small, flow remnants of potassic basaltic composition that are widely scattered over the 

western part of the quadrangle. Biotite and hornblende 

from the Windy Peak dacitic volcanic neck have been 

dated by the K-Ar method at 4.4±0.4 Ma, and 4.5±0.4 Ma, 

respectively; a pebble of dacite from the Kings River fan, 

apparently derived from the volcanic neck, yielded a 

whole rock age of 4.03±0.12 Ma (Huber, 1981). 

The basaltic remnants within the quadrangle have 

not been dated A basalt flow remnant 15 km west of the 

quadrangle on Rancheria Creek yielded a whole rock K-Ar 

age of 3.20±0.06 Ma and the basalt flow of Stony Flat 15 

km west-southwest of the quadrangle yielded a whole rock 

K-Ar age of 3.40±0.06 Ma (Huber, 1981). 

SAMPLING AND ANALYTIC METHODS 

About 300 samples of typical plutonic and volcanic 

rocks were collected during the course of mapping 

within the quadrangle. Of these, 30 granitic, 2 metavol-

. canic, and 9 Cenozoic volcanic rocks were chemically 

analyzed for their major elements, and most were also 

analyzed for selected trace elements (tables 1 and 3). 

Older chemical analyses were performed by the rapid 

method of Shapiro and Brannock (1962). All other 

analyses were made by standard X-ray fluorescence 

techniques with N~O, and in some cases ~0, determined by flame photometry. Ferrous iron, C02, H2

0+, 

and H20- were determined by standard wet chemical 

methods. The generally regular relation of Si02 to the 

other major elements in the analyzed granitic rocks is 

show~ in the variation diagrams of figure 2. 

Altogether, 178 samples of granitic rocks were 

analyzed modally for the volume percent of their constituent minerals (table 2). Modal analyses were made by 

counting over 1,000 points on stained rock slabs 

(Norman, 1974). The color differences provide a basis 

for identifying and measuring the volume percent of 

quartz, plagioclase, K-feldspar, and mafic minerals 

(chiefly biotite, hornblende, sphene, and magnetite. 

The locations of analyzed samples are shown in 

figure 1, and the modal proportions of quartz, K-feldspar, and plagioclase in the granitic rocks appear in the 

triangular plots of figure 4, which provide the basis for 

naming the rocks according to the classification (fig. 3) 

of the International Union of Geological Sciences 

(Streckeisen, 1973). 

Specific gravity was determined by weighing hand 

samples in air and water on a beam balance. Magnetic 

susceptibility was measured on 1 kilogram hand samples 

with a Geoinstruments JH-5 susceptibility meter. Direct 

readings in SI units x1o-s were doubled in accordance 

with the procedures used for hand samples. 

RELATION OF Sl02 TO SPECIFIC GRAVITY, 

COLOR INDEX, AND MAGNETIC 

SUSCEPTIBILITY 

The relation between major element chemical constituents and other parameters that can be measured 

more easily and at less cost can lead toward a better appraisal of compositional variation of the diverse plutonic 

rocks in a given area. Examination of about 200 analyses 

of granitic rock samples collected between 37° and 38° 

N. latitude in the Sierra Nevada (Bateman and others, 

1984) indicates that the bulk specific gravity of hand 

specimens and volume percent of mafic minerals (color 

index) both correlate relatively well with each other and 

inversely with the weight percent of Si02 (fig. 5). The 

inverse correlation of bulk specific gravity with weight 

percent Si02 is particularly good (R2::0.820), such that 

Si02=317.93-(sp. gr./0.010752). The analyzed granitic 

rocks within the quadrangle show these same general 

trends, but scatter is greater because of limited analyses 

(fig. 6). 

2 Marion Peak Quadrangle, Fresno County, California-Analytic Data 
Measurements of magnetic susceptibility show a direct relation to both specific gravity and volume percent of 

mafic minerals measured on the same samples (fig. 7). 

AVERAGE GRANITIC ROCK COMPOSITION 

The estimation of the average chemical composition 

of the granitic rocks in the quadrangle is useful for comparison with other areas, and ultimately for development 

of models for the genesis of the batholith. Because of its 

ease of measurement, specific gravity is generally obtained 

for a higher proportion of available samples than are other 

analytical procedures. An estimate of the average specific 

gravity of each pluton is derived from a weighted average 

of the determinations made on samples from that pluton. 

Then the average specific gravity of the plutonic rocks in 

the entire quadrangle is determined by considering the area 

of each mapped plutonic mass (table 4). From this grand 

average specific gravity, the average Si02 content of 69.2 

weight percent is determined from the overall relation of 

specific gravity to Si02• Finally other major element concentrations are estimated for this average Si02 content 

from variation diagrams for all analyzed rocks in the quadrangle, thus establishing the overall estimate of the average 

plutonic rock in the quadrangle. 

The 69.2 percent Si02 average for granitic rocks of 

the Marion Peak quadrangle is somewhat less than the 

70.5 percent estimated for the Mt. Whitney quadrangle adjacent on the southeast (Moore, 1987), and more than the 

68.2 percent estimated for the Mt. Pinchot quadrangle adjacent to the east (Moore, 1963). The estimated average 

composition of Mesozoic plutonic rocks of the Sierra 

Nevada is 68.4 percent (Dodge, 1972). 

REFERENCES 

Bateman, P.C., Dodge, F.C.W., and Bruggman, P.E., 1984, Major oxide analyses, CIPW norms, modes, and bulk specific 

gravities of plutonic rocks from the Mariposa 1° x 2° sheet, 

central Sierra Nevada, California: U.S. Geological Survey 

Open-File Report 84-162, 50 p. 

Chen, J.H., and Moore, J.G., 1979, Late Jurassic Independence 

dike swarm in eastern California: Geology, v. 7, no. 3, 

p. 129-133. 

Chen, J.H., and Moore, J.G., 1982, Uranium-lead isotopic ages 

from the Sierra Nevada batholith, California: Journal of 

Geophysical Research, v. 87, p. 4761-4784. 

Dodge, F.C.W., 1972, Trace-element contents of some plutonic 

rocks of the Sierra Nevada batholith: U.S. Geological Survey Bulletin 1314-F, 13 p. 

Dodge, F.C.W. and Moore, J.G., 1968, Occurrence and 

composition of biotites from the Cartridge Pass pluton of 

the Sierra Nevada batholith, California in Geological Survey Research 1968: U.S. Geological Survey Professional 

Paper 600-B, p. 6-10. 

Evernden, J.H. and Kistler, R.W., 1970, Chronology of 

emplacement of Mesozoic batholithic complexes in California and western Nevada: U.S. Geological Survey Professional Paper 623, 42 p. 

Huber, N.K .• 1981, Amount and timing of late Cenozoic uplift 

and tilt of the central Sierra Nevada, California-Evidence 

from the upper San Joaquin River basin: U.S. Geological 

Survey Professional Paper 1197, 28 p. 

Moore, J.G., 1963, Geology of the Mount Pinchot quadrangle, 

southern Sierra Nevada, California: U. S. Geological Survey Bulletin 1130, 152 p. 

--1978, Geologic map of the Marion Peak quadrangle, 

Sierra Nevada, California: U.S. Geological Survey Geologic Quadrangle Map GQ 1399. 

--1987, Geologic map of the Mount Whitney quadrangle, 

Inyo and Tulare counties, California: U.S. Geological Survey Geologic Quadrangle Map GQ 1545. 

Norman, M.B., 1974, Improved techniques for selective 

staining of feldspar and other minerals using amaranth: 

U.S. Geological Survey Journal of Research, v. 2, p. 73-

79. 

Saleeby, J.B., Kistler, R.W., Longiaru, S., Moore, J.G., and 

Nokleberg, W.J., 1990, Middle Cretaceous silicic metavolcanic rocks in the Kings Canyon area, central Sierra 

Nevada, California, in Anderson, J.L., ed., The nature and 

origin of Cordilleran magmatism: Boulder, Colorado, Geological Society of America Memoir 174, p. 251-270. 

Shapiro, L., and Brannock, W.W., 1962, Rapid analyses of silicate, carbonate, and phosphate rocks: U.S. Geological Survey Bulletin 1144A, 56 p. 

Streckeisen, A.L., 1973, Plutonic rocks, classification and 

nomenclature recommended by the International Union of 

Geological Sciences Subcommission on the Systematics of 

Igneous Rocks: Geotimes, v. 18, no. 10, p. 26-30. 

Tobish, O.T., Saleeby, J.B., and Fiske, R.S., 1986, Structural 

history of continental volcanic arc rocks, eastern Sierra 

Nevada, California: a case for extensional tectonics: Tectonics, v. 5, p. 65-94. 

References 3 

FIGURES 1-7; TABLES 1-5 

BLUE CANYON 

[JCC3 

TEHIPITE 

DOME 

AS 

• FlS 

NORTH 

Fl7 

. 

Fl9 

. 

DOME 

• M3 

LOOKOUT 

Ml3 

• MIO 

Ml2 

UGH1NING • CREEK • Mll 

0M5 

Ml4 

MIS 

PEAK 

0 

I 

2 

I 

4 

I 

CC4 

IJ . 

.C7 

C8 

CIO . 

.cl4 DIVIDE 

Cl2• 

CIS 

• eCI6 C20 

Rl 

R2 

R3 

R7 

PARADISE 

R8. 

RIO 

6 KILOMETERS 

I 

0Rl2 

• Rl3 

Rl4 

Rl6 

Rl8 

• Rl9 

R21 • R20 

Rl7 

Figure 1. Generalized geologic map of Marion Peak quadrangle (Moore, 1978) showing locations of analyzed samples. 

Plutonic rocks shown by circles (chemically analyzed, table 1) and dots (modally analyzed, table 2). Chemically analyzed 

Cenozoic volcanic rocks shown by squares. Mesozoic granitic rocks are unpatterned, Cenozoic volcanic rocks have a 

shaded pattern, and metamorphic rocks have a lined pattern. Names of plutonic rock units shown. 

Figures 1-7; Tables 1-5 7 
18~--~~--------------~-----

17 

CW) 16 

C) 

N 15 

~ 14 

13 

12~--~~--~----_.----~----~ 

55 65 75 

2 

0 ~----~----~----~----~----~ 

55 65 75 

7 ~~--~----~----~----~------

6 

5 

C) 4 

as 

0 3 

2 

1 

0 ~----~----~----~------~~~ 

55 65 75 

6 p--------------------------------

5 

C) 4 

N 

~ 3 

2 

1 

55 65 75 

1.0 ~--~....-----....---~----~....------

0.8 

6 0.6 

N 

J: 0.4 

0.2 

0.0 ..._ ____ ..__ ____ ~----..&....----......,;;;;;...._ __ .;;~ 

55 65 75 

Si02 

55 65 

55 65 

75 

75 

2 CW) 

C) 

3 

N 

CD 

LL 

C) 

2 CD 

LL 

~----T------,r-----T.------r-,----,6 

. . 

.. El - 5 

~----,~----------r-------r-----, 1.0 

0.8 

0.6 N 

C) 

0.4 t0.2 

L-.--~------'-----.....1.----~--~ ..... 0.0 

55 65 75 

r------------..-------r-----T"----.., 0.5 

El 

0.4 

0.3 II) 

C) 

N 0.2 Q. 

0.1 

L-----1..-----.1----~--_.___.;;;::a,... ..... 0.0 

55 65 Si02 75 

Figure 2. Si02 variation diagrams for analyzed granitic rocks from the Marion Peak quadrangle. Least squares regression 

lines through data were used to estimate the average major elements based on the Si02 average of 69.2 weight percent 

(table 5). 

8 Marion Peak Quadrangle, Fresno County, California-Analytic Data 
Q 

Quartz 

monzonite 

35 65 

EXPLANATION 

Q Quartz 

A Alkali feldspar 

Plagioclase An 5 

90 

-100 

Figure 3. Classification scheme for granitic rocks from Streckeisen (1973). 

Figures 1-7; Tables 1-5 9 
A B 

35+-A 65 90 35+-A 65 90 

c D 

35+-A 65 90 35+-A 65 90 

E F 

35+-A 65 90 35+-A 65 90 

Figure 4. Modal plots of samples from 1 5 of 22 granitic masses in the Marion Peak quadrangle; large symbols 

White Divide. C, Granite of Kennedy Lakes (circles) and Cartridge Pass pluton (squares). D, Granodiorite of North 

(circles), Arrow pluton (squares), and Granite of Grand dike (triangle). G, Granodiorite of Mitchell Peak (circles) 

pluton. K, Averages of analyzed granitic masses. See figure 3 for classification scheme. 

1 0 Marion Peak Quadrangle, Fresno County, California-Analytic Data 
• 

G H 

65 90 65 90 

K 

are averages. A, Granite of Tehipite Dome (circles) and Granite of Alpine Creek (squares). 8, Granodiorite of 

Dome. E, Pyramid pluton (circles) and Granodiorite of Muro Blanco (squares). f, Granodiorite of Lightning Creek 

and Granodiorite of Sugarloaf (squares). H, Granodiorite of Lookout Peak. I, Granite of North Mountain.), Paradise 

Figures 1-7; Tables 1-5 11 
... 

c 

Q) 

() 50 ,_ 

Q) y = 103.76- 1.3533x RA2 = 0.724 

Q. 

Q) 40 

e 

::::::1 

0 30 

> 

,; 

"i 20 ,_ 

Q) 

c: 10 e 

() 

;;:: 

as 60 70 80 ~ Si02

, weight percent 

2.9 

y = 3.4184 - 1.0752e-2x RA2 = 0.820 

~ ... 

·; 2.8 

as ,_ 

a 

() 2.7 

;;:: 

"(j 

Q) 

Q. 2.6 UJ 

2.5 

50 60 70 80 

Si02, weight percent 

Figure 5. Relation of Si02 content to volume percent mafic 

minerals and to specific gravity for about 200 analyzed 

granitic rocks in the Sierra Nevada between 37° and 38° 

N. latitude (Bateman and others, 1984). Equations for least 

squares regression lines through data are shown. 

.. 

c 

Q) 

(,) 

... 50 

Q) 

0. 

Q) 40 -

E 

:s 

0 30 

> 

.. (/) 20 ~ 

as 

... 

Q) 10 ~ c 

E 

0 (,) 50 ,..... 

as 

::E 

2.9 

~ 

... 

·s; 2.8 ~ 

"' ,_ 

C) 

0 2.7 ~ 

;: 

·o 

Q) 2.6- a. 

en 

2.5 

50 

I I 

El 

El El 

.... rfl lEI 

El ' Dil 

I I ~~ ... 60 70 

Si02

, weight percent 

I 

El El 

EIEI 

I 

El El 

El 

-

-

-

-

80 

-

-

-

60 70 80 

Si02

, weight percent 

Figure 6. Relation of Si02 content to volume percent mafic 

minerals and to specific gravity for 15 analyzed granitic 

rocks in the Marion Peak quadrangle. 

12 Marion Peak Quadrangle, Fresno County, California-Analytic Data 
.., 

c 

CD 

~ 30 y = 2.1715 + 2.7627e-3x 

Q. - El 

CD 

E 2o ::l 

0 

> 

rl 

"i 

... 

Q) 

c 

10 

E 

() 

;::: 

o------~--._~~_.--~--~_.--~~ 

as 

~ 

>a 

.. 

·-> 

as 

... 

C) 

(,) 

·-.._ 

·-() 

Q) 

Q. 

0 

0 2000 

Magnetic 

4000 6000 8000 10000 

Susceptibility (SI) 

y = 2.6115 + 2.0064e-5x R"2 = 0.469 

m 

2.5 L----t.--...L---.&..-----1--__._ __ ...____,~~..--_. __ ......____. 

0 2000 4000 6000 8000 10000 

Magnetic Susceptibility (SI) 

Figure 7. Relation of magnetic susceptibility to volume 

percent of mafic minerals and to specific gravity for most 

of the 178 modally analyzed granitic rocks in the Marion 

Peak quadrangle (table 2). Magnetic susceptibility is reported in dimensionless 51 units Xl o-s. Equations for least 

squares regression lines through data are shown. 

Figures 1-7; Tables 1-5 13 
Table 1. Cher:nical analyses and norms of granitic rocks 

[t, Analysis performed in the rapid rock analysis laboratory under the supervision of Leonard Shapiro; analysts: P. Elmore, S. Botts, G. Chloe, H. Smith, 

J. Kelsey, L. Artis and J. Glenn. •, Analysis by X-ray spectroscopy; analysts D. Vivit, M. Dyslin. Analysis of FeO, ~0, and C02 by chemical methods; 

analyst, N. Elsheimer. -,no data] 

Granite of 

Granite of Tehipite Dome Alpine Creek Granodiorite of White Divide Granite of Kennedy lakes 

Field No. 67M24t 68MSO* 68M51* M735* M742* 64M20* 64M37* 64M9t 64M10* 67M40* 67M43t 67M46* 

Map No. A6 AB A9 (dior.) 82 83 C9 C18 C23 C25 E6 E9 EB 

Chemical analyses (weight percent) 

Si02 72.4 72.5 61.8 73.4 74.6 69.2 73.4 69.5 71.9 72.1 68.7 76.0 

Al203 13.8 13.9 16.8 14.2 13.5 14.9 14.2 15.4 14.5 14.0 17.1 13.1 

Fe2

0 3 0.30 0.67 1.60 0.51 0.48 1.28 0.62 1.30 0.92 0.20 1.10 0.60 

FeO 2.00 0.97 3.20 0.70 0.49 1.60 0.70 1.30 0.83 0.78 0.48 0.26 

MgO 0.90 0.50 2.00 0.25 <0.2 0.75 0.25 1.00 0.45 <0.2 0.28 <0.2 

CaO 2.30 2.34 6.24 1.42 1.06 2.54 1.80 2.30 2.08 0.90 1.30 0.72 

Na2

0 3.10 3.30 3.60 4.00 3.40 4.10 4.20 4.10 4.00 3.70 5.00 4.10 

~0 4.20 4.16 1.82 4.04 5.06 3.50 3.22 4.00 3.62 4.88 5.00 4.38 

~{)1- 0.32 0.27 0.51 0.15 0.12 0.23 0.24 0.41 0.22 0.92 0.47 0.11 

H2o- 0.14 0.11 0.12 0.10 0.05 0.06 0.11 0.10 0.03 0.20 0.09 0.04 

Ti02 0.32 0.30 0.86 1.20 0.20 0.48 0.26 0.36 0.30 0.16 0.22 0.16 

P20S 0.08 0.12 0.32 0.15 0.08 0.26 0.12 0.13. 0.16 0.06 0.10 0.04 

MnO 0.08 0.07 0.10 1.40 0.04 0.09 0.05 0.12 0.07 0.04 0.09 0.04 

LOI 0.42 0.43 0.26 0.22 0.37 0.22 2.14 0.17 

C02 <.05 <.05 <.05 <.05 

Total 99.9 99.6 99.4 99.9 99.5 99.2 99.5 100.0 99.3 100.3 99.9 99.9 

Trace elements (parts per million) 

Ba 700 630 900 1750 770 1250 720 1500 990 950 3000 510 

Ce 60 72 112 98 94 78 82 90 70 

La 30 54 68 98 82 72 66 30 74 78 70 64 

Nb 15 18 18 18 12 26 16 20 16 14 10 22 

Rb 148 54 102 126 80 94 82 76 166 

Sr 200 198 450 220 76 380 280 500 315 84 200 54 

7.:t 100 96 172 154 210 250 128 150 158 176 200 134 

y 20 14 20 18 16 34 16 20 18 14 15 16 

Cu 2 <20 <20 <20 <20 <20 <20 3 <20 <20 2 <20 

Ni <20 <20 <20 <20 <20 <20 1.5 <20 <20 <20 

Zn 26 60 24 26 44 26 32 20 <20 

Cr 5 <20 <20 <20 <20 <20 <20 5 <20 <20 <20 

CIPW norms (weight percent) 

Q 31.17 31.93 18.23 31.68 33.28 25.90 32.94 24.09 30.26 30.26 17.78 33.78 

or 24.94 24.88 10.93 24.11 30.2 20.98 19.27 23.76 21.63 29.73 29.73 26.00 

ab 26.32 28.26 30.97 34.19 29.0 35.12 35.96 34.86 34.27 32.24 42.56 34.86 

an 10.62 10.94 24.71 6.31 4.79 11.05 8.25 10.29 9.37 4.22 5.53 3.31 

c 0.29 0.98 0.69 0.38 0.83 0.57 0.61 1.17 1.45 0.40 

ne 

di 0.03 3.78 

ol 

hy 5.30 2.13 6.58 1.20 0.75 3.15 1.07 3.44 1.55 1.63 0.70 0.50 

mt 0.43 0.99 2.36 0.75 0.70 1.88 0.91 1.90 1.35 0.30 1.20 0.50 

il 0.61 0.57 1.65 0.49 0.38 0.93 0.49 0.68 0.57 0.30 0.42 0.30 

hem 0.28 0.25 

ap 0.19 0.28 0.76 0.28 0.19 0.60 0.28 0.30 0.37 0.14 0.23 0.09 

cc 0.11 0.11 0.11 

Total 99.98 100.01 99.97 99.99 100.00 99.99 100.00 100.00 99.98 99.99 99.99 99.99 

14 Marion Peak Quadrangle, Fresno County, California-Analytic Data 
Table 1. Chemical analyses and norms of granitic rocks-Continued 

[t, Analysis performed in the rapid rock analysis laboratory under the supervision of Leonard Shapiro; analysts: P. Elmore, S. Botts, G. Chloe, 

H. Smith, J. Kelsey, L Artis and J. Glenn. *,Analysis by X-ray spectroscopy; analysts D. Vivit, M. Dyslin. Analysis of FeO, H,O, and C01 by 

chemical methods; analyst. N. Elsheimer. -.no data] 

Granite of Granodiorite of Granodiorite of Granodiorite of 

Kennedy Lakes-Con. North Dome Pyramid pluton Muro Blanco Lookout Peak 

Field No. 68M39* 68M40* 67M26t 68M35bt 68M41t 68M42t 68M80* 67M76* 67Mlt 

Map No. E12 Ell F4 Gl{gabbro) G15 G19 {diorite) H2 Ml MS 

Chemical analyses (weight percent) 

SiOO 72.1 73.7 69.0 45.7 63.9 51.5 70.0 67.2 64.1 

~3 14.7 13.9 15.2 18.0 16.0 18.7 14.7 15.8 16.5 

Fe2

0 3 0.77 0.82 1.80 4.40 2.80 4.80 1.18 1.62 2.50 

FeO 0.59 0.42 1.20 7.10 2.20 4.20 1.07 1.59 1.90 

MgO 0.30 <0.2 1.20 6.70 2.30 4.90 0.70 1.10 2.00 

CaO 1.50 0.86 2.90 11.00 5.00 8.80 2.86 4.30 4.30 

~60 4.00 4.10 3.50 2.20 3.10 3.60 3.40 3.60 3.30 

4.58 4.74 3.60 0.78 3.00 0.78 3.94 2.84 3.60 

~()+ 0.19 0.07 0.73 1.40 0.49 0.63 0.25 0.32 0.74 

~o- 0.09 0.11 0.15 0.11 0.09 0.14 0.10 0.07 0.17 

T102 0.26 0.24 0.40 0.53 0.21 0.42 0.36 0.52 0.57 

P20S 0.10 0.08 0.15 0.16 0.09 0.16 0.18 0.24 0.21 

MnO 0.06 0.07 0.07 1.50 0.66 1.20 0.05 0.06 0.09 

LOI 0.32 0.19 0.40 0.32 

C02 <.05 <.05 0.05 <.05 <.05 -- Total 99.6 99.5 99.9 99.6 99.9 99.9 99.2 99.6 100.0 

Trace elements (parts per million) 

Ba 1600 990 1000 300 700 2000 890 920 1500 

Ce 102 104 66 92 

La 86 92 30 56 70 30 

Nb 10 16 10 15 7 14 18 10 

Rb 90 98 88 70 

Sr 230 88 700 1500 1000 1500 325 520 1000 

Zr 180 275 100 50 200 70 152 210 150 

y 10 14 15 50 30 20 14 20 20 

Cu <20 <20 10 50 30 100 20 <20 15 

Ni <20 <20 5 50 15 50 20 <20 10 

Zn 24 30 28 38 

Cr <20 <20 5 50 20 50 <20 <20 7 

CIPW norms (weight percent) 

Q 28.15 30.04 27.62 20.24 1.71 28.72 25.40 19.54 

or 27.36 28.25 21.45 4.67 17.85 4.67 23.64 16.96 21.45 

ab 34.19 35.03 29.87 18.95 26.40 30.72 29.19 30.80 28,18 

an 6.89 3.79 13.24 37.66 21.04 32.86 13.26 18.79 19.76 

c 0.67 0.65 0.75 0.07 

ne 

di 13.56 2.43 7.93 0.98 0.06 

ol 12.86 

hy 0.89 0.50 3.20 4.31 7.23 13.82 2.26 3.13 5.65 

rnt 1.13 0.89 2.64 6.50 4.09 7.02 1.74 2.38 3.65 

il 0.49 0.46 0.76 1.03 0.40 0.80 0.70 1.01 1.10 

hem 0.22 

ap 0.23 0.19 0.35 0.37 0.21 0.37 0.42 0.56 0.49 

cc 0.11 0.11 0.11 0.11 0.11 

Total 100.00 100.02 99.99 100.02 100.00 100.00 100.00 100.01 99.99 

Figures 1-7; Tables 1-5 15 
Table 1. Chemical analyses and norms of granitic rocks-Continued 

[t. Analysis perfonned in the rapid rock analysis laboratory under the supervision of Leonard Shapiro; analysts: P. Elmore, S. Botts, 

G. Chloe, H. Smith, J. Kelsey, L. Artis and J. Glenn.*, Analysis by X-ray spectroscopy; analysts D. Vivit, M. Dyslin. Analysis of FeO, 

}\0, and C01 by chemical methods; analyst, N. Elsheimer. -,no data] 

Granodiorite of Paradise 

Lookout Peak-Con. Granite of North Mountain pluton Metavolcanic 

Field No. 68M121* 68M100* 67M97t M794* 67M93* 68M1* 68M2* 67M86t M183t 68Mll4t 

Map No. M18 M21 (diorite) N2 N9 N14 N17 N16 R12 MVl MV2 

Chemical analyses (weight percent) 

SiOO 69.4 59.4 73.5 75.8 .76.2 74.8 75.9 64.8 73.8 63.3 

~3 15.0 17.2 14.6 13.2 13.0 13.5 13.0 16.4 14.2 16.7 

Fe20 3 1.35 2.05 1.10 0.36 0.44 0.45 0.23 2.1 0.60 2.10 

FeO 1.22 3.24 0.44 0.28 0.29 0.47 0.33 1.8 0.64 3.40 

MgO 0.75 2.30 0.30 <0.2 <0.2 <0.2 <0.2 1.8 0.34 2.20 

CaO 3.08 6.30 1.60 0.62 0.52 0.90 0.50 3.8 4.00 4.90 

~60 3.40 3.80 3.60 3.60 3.60 3.70 3.50 3.4 0.23 3.00 

4.08 2.06 3.80 5.10 5.04 4.76 5.30 4.1 5.00 2.60 

~()+ 0.15 0.52 0.50 0.07 0.13 0.13 0.05 0.7 0.46 0.63 

~o- 0.06 0.08 0.14 0.05 0.04 0.05 0.03 0.1 0.17 0.09 

T102 0.40 0.88 0.08 0.14 0.14 0.20 0.12 0.6 0.37 0.15 

Plo, 0.18 0.44 0.04 0.06 0.04 0.08 0.04 0.2 0.06 0.12 

MnO 0.05 0.10 0.11 0.03 0.04 0.05 0.04 0.1 0.08 0.67 

LOI 0.18 0.39 0.17 0.25 0.23 0.10 

C02 <.05 <.05 0.05 <.05 

Total 99.3 98.8 99.9 99.7 99.9 99.5 99.3 99.9 100.0 99.9 

Trace elements (parts per million) 

Ba 700 840 330 205 930 184 2000 1500 

Ce 98 90 90 78 80 66 

La 82 74 76 60 70 52 30 

Nb 14 18 18 24 34 16 15 15 

Rb 110 82 162 172 220 186 

Sr 345 660 48 30 170 30 100 700 

'b 162 240 126 88 164 84 200 100 

y 14 18 14 20 28 16 50 20 

Cu <20 22 <20 <20 <20 <20 5 15 

Ni <20 <20 <20 <20 <20 <20 2 

Zn 28 76 <20 <20 <20 <20 

Cr <20 <20 <20 <20 <20 <20 5 15 

CIPW norms (weight percent) 

Q 26.93 13.6 34.66 34.10 34.85 51.76 34.18 19.02 44.74 20.27 

or 24.35 12.47 22.63 30.32 29.90 3.01 31.56 24.47 29.73 15.48 

ab 29.11 32.92 30.72 30.63 30.63 33.25 29.87 29.02 1.95 25.55 

an 13.79 24.31 7.41 2.68 2.32 4.24 2.22 17.31 19.29 23.41 

c 1.88 0.79 0.78 5.66 0.71 0.07 1.40 0.46 

ne 

di 0.37 3.81 

ol 

hy 2.28 7.05 0.75 0.54 0.51 0.80 0.79 5.32 1.06 11.09 

mt 1.97 3.04 1.55 0.52 0.64 0.68 0.33 3.07 0.87 3.07 

il 0.76 1.71 0.15 0.27 0.27 0.40 0.23 1.12 0.70 0.28 

hem 0.04 

ap 0.42 1.04 0.09 0.14 0.09 0.19 0.09 0.49 0.14 0.28 

cc 0.11 0.11 0.11 0.11 

Total 99.98 99.99 99.99 99.99 99.99 99.99 99.98 100.00 99.99 100.00 

16 Marion Peak Quadrangle, Fresno County, California-Analytic Data 
Table 2. Modal analyses of granitic rocks 

[Analyst, Oleg Polovtzoff. S.D., standard deviation. -, no data] 

Map Field Quartz K-feldspar Plagioclase Mafic Specific Magnetic 

No. No. minerals gravity susceptibility 

Granite of Tehlplte Dome 

A1 M163 27.4 14.4 47.2 11.1 

A3 67M41 21.0 24.4 42.9 11.7 2.65 1480 

A4 67M50 26.0 26.8 37.4 9.8 2.66 1520 

A5 67M25 27.9 31.2 33.7 7.2 2.62 1580 

A6 67M24 26.2 29.4 36.2 8.2 2.64 2000 

A7 67M47 20.8 20.3 43.5 15.4 2.68 2200 

A8 68M50 36.2 32.3 21.6 9.9 1280 

A9 68M51 45.2 11.5 16.4 26.9 2600 - Average------------- 28.8 23.8 34.9 12.5 2.65 1768 

S.D. ----------------- 8.2 7.2 10.1 5.9 0.02 423 

Granite of Alpine Creek 

Bl M736 32.6 29.2 35.9 2.3 

B2 M735 43.3 24.6 26.2. 5.9 1680 

B3 M742 27.5 36.0 33.3 3.2 1560 

B4 M773 30.6 32.7 36.1 0.6 1200 - - Average------------- 33.5 30.6 32.9 3.0 1480 

S.D. ----------------- 5.9 4.2 4.0 1.9 204 

Granodiorite of White Divide 

C1 M512 24.3 19.0 52.1 4.6 2.63 1900 

C2 M511 26.2 41.1 31.1 1.6 2.61 640 

C3 M94 30.0 20.5 47.0 2.5 2.62 980 

C4 M536 28.9 22.8 44.8 3.5 2.75 1500 

C5 M112 27.5 21.2 46.7 4.6 2.65 3200 

C6 M116 22.7 22.7 50.1 4.5 2.67 4200 

C7 64M8 35.8 25.6 35.4 3.2 2.62 1860 

C8 MilO 27.6 23.6 44.3 4.7 2.66 1920 

C9 64M20 42.7 25.9 18.8 12.6 3400 

C10 M111 24.0 25.5 44.5 6.0 2.66 

C11 M528 37.4 2.7 51.4 8.5 2.69 800 

C12 64M6 28.3 28.8 38.5 4.4 2400 

C13 68M31 35.6 33.4 30.0 1.0 2.58 900 

C14 M534 19.0 21.6 49.4 10.0 2.67 2600 

C15 M533 26.5 15.8 41.4 16.3 2.71 1720 

C16 M532 24.0 19.1 51.6 5.3 2.64 1300 

C17 M526 33.0 23.8 39.8 3.4 2.64 1820 

CIS 64M37 45.5 26.4 23.1 5.0 1260 

C19 M74 • 35.4 23.4 37.6 3.6 2.65 3000 

C20 M531 30.4 17.9 45.2 6.5 2.66 

C21 M530 20.9 16.5 53.8 8.8 2.66 2200 

C22 64M3 22.3 28.8 41.4 7.5 2800 

C23 64M9 26.4 26.4 42.3 4.9 3000 

C24 64M4 26.5 23.7 43.4 6.4 2.64 3000 

C25 64M10 39.8 23.5 27.2 9.5 2200 - Average------------- 29.6 23.1 41.2 6.0 2.65 2113 

S.D. ----------------- 6.8 6.7 9.1 3.4 0.04 913 

Cartridge Pass Pluton 

Dl M60 24.9 21.7 47.5 5.9 2.67 

D2 M58 24.3 21.6 45.4 8.7 2.68 

Figures 1-7; Tables 1-5 17 
Table 2. Modal analyses of granitic rocks-Continued 

[Analyst, Oleg Polovtzoff. S.D., standard deviation.-, no data] 

Map Field Quartz K-feldspar Plagioclase Mafic Specific Magnetic 

No. No. minerals gravity susceptibility 

Cartridge Pass Pluton-Continued 

D3 M57 27.2 19.2 46.9 6.7 2.67 

D4 M63 22.6 14.7 53.9 8.8 2.67 

D5 M61 28.4 19.4 45.0 7.2 2.66 - Average ------------ 25.6 19.3 47.2 7.9 2.67 

S.D. ----------------- 1.9 2.3 3.2 1.4 0.01 

Granite of Kennedy Lakes 

E1 M184 34.2 34.5 28.7 2.6 2.61 540 

E2 67M71 32.8 31.7 33.0 2.5 2.62 1700 

E3 67M34 24.1 33.6 36.7 5.6 2.59 1800 

E4 67M36 30.8 38.3 29.0 1.9 2.59 1060 

E5 67M63 27.1 35.2 29.4 8.3 2.57 3400 

E6 67M40 14.4 5.7 61.9 18.0 2.73 

E7 67M23 23.4 32.0 35.6 9.0 2.60 2000 

E8 67M46 32.5 33.8 31.5 2.2 2.61 1160 

E9 67M43 17.9 42.0 38.3 1.8 2.62 2000 

ElO 67M45 18.9 19.9 47.0 14.2 2.67 5000 

Ell 68M40 35.4 34.2 26.7 3.6 1580 

E12 68M39 31.9 29.9 34.0 4.2 1660 

E13 67M68 17.0 13.4 57.1 12.5 2.69 4400 

Average ------------ 26.2 29.6 37.6 6.6 2.63 2192 

S.D. ----------------- 7.0 9.9 10.7 5.1 0.05 1305 

Granodiorite of North Dome 

Fl 67M49 18.3 13.8 54.4 13.5 2.70 2400 

F2 67M51 18.2 4.6 60.0 17.2 2.76 

F3 67M48 19.5 20.2 50.1 10.2 2.68 3000 

F4 67M26 24.3 19.9 43.1 12.7 2.66 2600 

F5 67M21 24.1 21.0 45.9 9.0 2.67 2600 

F6 67M22 22.3 21.2 45.7 10.8 2.61 4000 

F7 67M61 18.4 20.5 48.4 12.7 2.66 2800 

F8 67M27 21.9 21.2 43.0 13.9 2.65 3000 

F9 67M38 30.9 23.8 37.5 7.8 2.62 2400 

FlO 67M39 23.1 23.7 43.5 9.7 2.65 1740 

Fll 67M37 23.7 21.1 46.1 9.1 2.63 1700 

F12 67M28 28.2 24.6 39.7 7.5 2.62 2000 

F13 67M29 24.4 19.4 45.4 10.8 2.65 3000 

F14 67M52 26.4 20.8 46.7 6.1 2.61 

F15 67M53 23.1 20.7 45.7 10.5 • 2.65 3000 

F16 67M54 21.9 16.3 47.6 14.2 2.67 

F17 M822 27.7 23.4 43.8 5.1 1820 

F18 67M81 24.3 19.1 40.6 16.0 2.69 3400 

F19 M824 24.9 21.2 44.9 9.0 2.69 1240 

F20 67M67 32.0 23.7 39.3 5.0 2.62 1140 

F22 M825 25.1 18.2 46.5 10.2 2.69 2600 

F23 M826 15.1 6.4 65.3 13.2 2.73 2400 

F24 67M100 25.3 7.8 51.4 15.5 2.73 2800 

Average ------------ 23.6 18.8 46.7 10.9 2.67 2425 

S.D. ----------------- 4.0 5.4 6.2 3.3 0.04 725 

18 Marion Peak Quadrangle, Fresno County, California-Analytic Data 
Table 2. Modal analyses of granitic rocks-Continued 

[Analyst, Oleg Polovtzoff. S.D., standard deviation.-, no data] 

Map Field Quartz K-feldspar Plagioclase Mafic Specific Magnetic 

No. No. minerals gravity susceptibility 

Pyramid pluton 

01 68M35b 14800 

02 68M56 12.3 3.3 66.7 17.7 2.78 7000 

03 68M57 11.7 8.7 58.2 21.4 2.75 5600 

04 64M11 18.1 8.0 57.6 16.3 2.77 4600 

05 64M15 19.8 13.0 51.1 16.1 2.74 4400 

06 64M14 16.0 18.2 52.3 13.5 2.72 5200 

07 68M79 18.3 13.7 49.3 18.7 2.72 4600 

08 64M16 20.2 9.6 50.6 19.5 2.73 5400 

09 68M76 19.2 13.7 48.3 18.8 2.72 5000 

010 68M75 20.8 13.8 47.9 17.5 2.73 5000 

011 68M77 24.9 20.3 42.7 12.1 2.69 3800 

012 68M9 22.7 16.7 44.5 16.1 2.70 6200 

013 68M10 22.5 18.8 43.8 14.9 2.68 5200 

014 68M74 20.6 25.0 41.3 13.1 2.71 4800 

015 68M41 22.6 13.0 47.6 16.8 2.73 5000 

016 68M60 19.2 12.7 54.8 13.3 2.70 3200 

017 68M59 18.3 8.9 59.2 13.6 2.74 3800 

018 68M58 19.5 16.8 46.4 17.3 2.73 4600 

019 68M42 13000 

020 64M33 24.5 22.1 42.4 11.0 2.69 4000 

-- Average------------- 18.6 13.0 51.6 16.8 2.73 5855 

S.D. ----------------- 4.6 6.3 7.5 3.9 0.04 2800 

Granodiorite of Muro Blanco 

H1 B794 22.7 23.8 39.6 13.9 2200 

H2 68M80 41.6 25.4 25.0 8.0 4000 -- Average------------- 32.2 22.4 25.9 6.7 2000 

S.D. ----------------- 9.5 13.3 15.4 4.0 900 

Arrow pluton 

11 B792 25.4 22.0 46.2 6.4 3000 

12 B785 27.0 14.8 44.5 13.6 2.69 

13 B787 27.9 16.6 42.8 12.7 2.69 -- -- Average------------- 26.8 17.8 44.5 10.9 2.69 3000 

S.D. ----------------- 1.0 3.1 1.4 3.2 

Granite of Grand Dike 

11 68M117 32.1 40.8 25.9 1.2 2.62 7200 

Granodiorite of Lightning Creek 

K1 B860 20.7 10.4 45.6 23.3 

K2 M809 23.4 12.3 45.5 18.8 3200 

K3 M807 19.0 7.3 55.7 18.0 2.79 4600 

K4 M806 17.9 10.2 52.1 19.8 4200 

K5 M805 17.1 9.8 53.5 19.6 5000 

K6 M193 23.4 14.5 46.7 15.4 2.71 1100 

K7 2137 16.4 6.4 54.0 23.2 2.78 6000 

K8 68M123 21.3 12.5 49.2 17.0 2.72 6000 - Average------------- 19.9 10.4 50.3 19.4 2.75 4300 

S.D. ----------------- 2.5 2.5 3.8 2.6 0.04 1596 

Figures 1-7; Tables 1-5 19 
Table 2. Modal analyses of granitic rocks-Continued 

[Analyst, Oleg Polovtzoff. S.D., standard deviation. -, no data] 

Map Field Quartz K-feldspar Plagioclase Mafic Specific Magnetic 

No. No. minerals gravity susceptibility 

Granodiorite of Mitchell Peak 

L1 M167 16.9 17.4 47.2 18.5 2.74 4000 

L2 2/36 14.3 10.7 55.0 20.0 2.75 3400 

L3 68M98 21.4 15.0 51.7 11.9 2.71 5000 

Average ------------ 17.5 14.4 51.3 16.8 2.73 4133 

S.D. ----------------- 2.9 2.8 3.2 3.5 0.02 660 

Granodiorite of Lookout Peak 

M1 67M76 22.1 16.7 45.0 16.2 2.72 3800 

M2 M186 27.2 2.0 50.0 20.8 2.73 3000 

M3 68M92 25.7 28.5 38.9 6.9 2.62 3400 

M4 68M88 18.2 12.2 52.9 16.7 2.69 5000 

M5 67M1 20.8 12.3 46.7 20.2 2.69 4200 

M6 67M10 21.9 7.1 52.7 18.3 2.70 7000 

M7 68M102 17.4 7.8 51.9 22.9 2.72 4800 

M8 M195 19.5 14.6 48.7 17.2 2.75 4800 

M10 67M83 22.8 16.5 42.5 18.2 2.70 5200 

Mll M168 . 27.5 26.8 38.3 7.4 2.64 3800 

M12 67M8 22.0 7.6 52.8 17.6 2.72 6000 

M13 67M9 20.9 10.1 49.0 20.0 2.73 8000 

M14 67M3 21.8 9.8 52.2 16.2 5600 

M15 M170 17.3 13.3 52.0 17.4 2.74 5200 

M16 67M4 20.6 7.2 53.7 18.5 2.73 4000 

M17 67M5 16.4 19.2 56.7 7.7 2.63 1900 

M18 68M121 36.1 33.4 21.2 9.3 2200 

M19 67M91 16.0 9.7 56.1 18.2 2.77 4800 

M20 68M97 16.7 8.6 57.7 17.0 2.70 5600 

M21 68M100 55.2 8.0 11.0 25.8 5200 

M22 68M89 29.6 5.5 44.6 20.3 4600 

-- Average ------------ 23.1 13.2 46.4 16.8 2.70 4605 

S.D. ----------------- 9.2 7.8 11.2 4.9 0.04 1405 

Granodiorite of North Mountain 

N1 67M96 23.2 27.3 39.9 9.6 2.66 2800 

N2 67M97 28.0 24.2 43.9 3.9 2.61 700 

N3 67M99 5.0 30.3 59.3 5.4 2.64 1600 

N4 67M98 4.6 33.3 60.3 1.8 2.62 

N5 M83 32.7 5.8 58.1 3.4 2.68 1740 

N6 M82 33.8 44.4 20.1 1.7 2.60 640 

N7 M81 33.2 44.9 20.9 1.0 2.60 920 

N8 M175 27.9 38.9 30.4 2.8 2.61 980 

N9 M794 30.3 39.3 28.5 1.9 960 

N10 M176 20.4 57.6 21.4 0.6 2.60 880 

Nll 67M90 22.5 22.8 48.5 6.1 2.65 2600 

N12 67M95 5.0 47.5 45.1 2.4 2.62 820 

N13 67M94 1.9 40.9 56.4 0.8 2.60 44 

N14 67M93 3.4 55.1 40.5 1.0 2.61 1020 

N15 67M92 9.0 35.1 50.0 5.9 2.66 1400 

N16 68M2 20.4 52.3 25.4 1.9 1160 

N17 68M1 30.4 39.1 28.6 1.9 1420 

Average ------------ 19.5 38.8 39.8 3.1 2.63 1230 

S.D. ----------------- 11.6 13.3 13.9 2.4 0.03 681 

20 Marion Peak Quadrangle, Fresno County, California-Analytic Data 
Table 2. Modal analyses of granitic rocks-Continued 

[Analyst, Oleg Polovtzoff. S.D., standard deviation. -, no data] 

Map Field Quartz K-feldspar Plagioclase Mafic Specific Magnetic 

No. No. minerals gravity susceptibility 

Granodiorite of Sugarloaf 

P1 2/33 20.0 13.1 49.1 17.8 2.74 5400 

P2 68M95 21.7 17.8 44.4 16.1 2.70 4400 

P3 68M201 22.1 21.9 46.2 9.8 2.69 3800 

P4 68M19 19.7 18.4 44.2 17.7 2.71 4800 - - -- Average---······-··· 20.9 17.8 46.0 15.4 2.71 4600 

S.D. ················· 1.0 3.2 2.0 3.3 0.02 583 

Paradise pluton 

R1 M70 24.3 16.1 47.3 12.3 2.72 3800 

R2 M69 24.2 15.8 51.4 8.6 2.70 3800 

R3 68M6 22.0 22.6 48.0 7.4 2.68 4000 

R4 B-798 19.3 16.8 46.5 17.4 2.68 

R5 B-799 23.8 19.3 45.4 11.4 2.70 

R6 B-950 19.3 18.7 47.3 14.7 2.69 

R7 67M88 19.9 22.1 46.0 12.0 2.62 4000 

R8 M68 27.5 16.0 48.9 7.6 2.67 2400 

R9 M67 24.1 15.8 47.7 12.4 2.70 4000 

R10 67M7 28.7 13.6 41.2 16.5 2.67 4400 

Rll 67M87 23.2 14.7 48.2 13.9 2.71 4200 

R12 67M86 23.4 12.1 50.2 14.3 2.69 3200 

R13 67M85 19.0 10.8 54.9 15.3 2.71 4400 

R14 67M89 23.5 15.7 47.8 13.0 2.67 5000 

R15 2/31 29.0 23.0 41.6 6.4 2.66 3000 

R16 67M20 25.2 19.0 44.3 11.5 2.68 5200 

R17 67M19 23.6 20.8 43.8 11.8 2.68 3800 

R18 67M11 24.6 13.9 48.2 13.3 2.69 4000 

R19 67M18 18.9 27.5 41.2 12.4 2.68 4200 

R20 67M17 23.1 20.9 45.0 11.0 2.67 2600 

R21 67M14 19.2 23.2 44.9 12.7 2.67 3400 

R22 67M15 21.3 15.4 50.5 12.8 2.69 4000 

R23 67M12 26.2 18.6 43.6 11.5 2.66 3000 

Average---·········· 23.2 17.9 46.7 12.2 2.68 3820 

S.D. ··········-······ 2.9 4.0 3.3 2.7 0.02 701 

Figures 1-7; Tables 1-5 21 
Table 3. Chemical analyses and norms of Cenozoic volcanic rocks 

Field No. M117 M-778 69M9 M-113 68M32 67M74 67M78 67M66 67M84 

Map No. CC-2 CC-3 CC-4 CC-5 CC-7 CC-8 CC-10 CC-11 CC-12 

Chemical analyses (weight percent) 

Si02 63.0 47.9 48.92 63.3 53.7 47.9 48.13 57.17 49.5 

AI,_03 17.5 13.6 13.39 17.3 13.9 11.8 13.78 14.94 13.3 

Feg3 2.1 4.5 4.51 2.6 5.7 6.2 4.27 2.79 5.7 

Fe 1.7 4.6 3.52 1.2 1.4 2.8 4.00 2.83 3.4 

MgO 1.6 11.7 7.44 2.1 6.4 11.1 11.61 5.94 10.2 

CaO 3.6 9.7 9.12 4.2 6.8 8.4 9.36 5.73 9.4 

Na2

0 4.7 2.8 3.48 5.0 2.7 2.8 3.00 3.70 2.8 

~0 2.8 2.1 3.75 2.7 6.0 5.1 2.50 4.00 2.7 

HlQ+ 1.3 0.51 1.76 0.54 0.49 0.33 0.39 0.26 0.60 

H2o- 0.34 0.15 0.34 0.27 0.10 0.30 0.15 0.13 0.26 

Ti02 0.52 1.0 1.38 0.49 1.2 1.2 0.99 1.04 1.1 

~~6 0.26 0.96 1.14 0.30 1.4 1.6 0.84 0.72 0.81 

0.07 0.18 0.135 0.08 0.15 0.16 0.14 0.084 0.16 

C02 0.52 <.05 0.28 <.05 <.05 <.05 0.15 0.16 <.05 

Total 100.0 99.7 99.17 100.1 99.9 99.7 99.31 99.49 99.9 

CIPW norms (weight percent) 

Q 15.53 0.00 0.00 12.74 0.00 0.00 0.00 2.84 0.00 

or 16.91 12.53 22.90 16.07 35.69 30.42 14.98 23.89 16.10 

ab 40.64 18.23 17.79 42.62 22.99 5.47 16.51 31.64 20.47 

an 16.52 18.52 10.17 16.91 8.14 4.61 16.99 12.48 15.90 

c 0.83 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 

ne 0.00 3.08 6.84 0.00 0.00 10.00 5.00 0.00 1.87 

di 0.00 18.96 23.02 1.67 13.20 21.44 19.52 9.07 20.66 

ol 0.00 20.66 9.37 0.00 8.03 17.72 19.28 0.00 16.89 

hy 4.95 0.00 0.00 5.40 2.15 0.00 0.00 12.65 0.00 

mt 2.99 3.66 4.32 2.91 3.94 3.95 3.66 3.72 3.81 

il 1.01 1.92 2.71 0.94 2.29 2.30 1.91 2.00 2.11 

hem 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 

ap 0.63 2.30 2.79 0.72 3.34 3.83 2.02 1.72 1.72 

Total 100.01 99.86 99.91 99.98 99.77 99.74 99.87 100.01 99.75 

22 Marion Peak Quadrangle, Fresno County, California-Analytic Data 
Table 4. Some features of mapped and sampled granitic units 

[-,no data] 

Pluton or mass 

Granite of Tehipite Dome 

Granite of Alpine Creek 

Granodiorite of White Divide 

Cartridge Pass pluton 

Granite of Kennedy Lakes 

Granodiorite of North Dome 

Pyramid pluton 

Granodiorite of Muro Blanco 

Arrow pluton 

Granite of Grand Dike 

Granodiorite of Lightning Creek 

Granoodiorite of Mitchell Peak 

Granodiorite of Lookout Peak 

Granite of North Mountain 

Granodiorite of Sugarloaf 

Paradise Granodiorite 

Granite of Dougherty Peak 

Granite of Tunemah Lake 

Granite of LeConte Canyon 

Granodiorite of Upper Blue Canyon 

Older sheared granodiorite 

Mafic plutonic rock 

Total granitic rock 

Average granitic rock (by area) 

Metamorphic rock 

Tertiary dacite 

Tertiary basalt 

Total quadrangle 

Area, 

(km2) 

72.4 

5.6 

89.7 

9.6 

19.6 

70.6 

32.1 

13.0 

10.5 

2.4 

8.6 

9.7 

76.4 

14.4 

11.8 

117.0 

10.5 

4.5 

2.5 

0.7 

4.5 

2.8 

589.0 

24.7 

5.6 

0.7 

620.0 

Average 

specific gravity 

2.65 

2.65 

2.65 

2.67 

2.63 

2.67 

2.73 

2.69 

2.69 

2.62 

2.75 

2.73 

2.70 

2.63 

2.71 

2.68 

2.62 

2.62 

2.61 

2.67 

2.69 

2.80 

2.674 

Table 5. Average chemical composition, 

in weight percent, of granitic rocks in the 

Marion Peak quadrangle 

Si02 69.2 

Al203 15.1 

Fe20 3 1.2 

FeO 1.3 

MgO 0.95 

CaO 2.8 

~60 3.7 

3.9 

H20+ 0.38 

~a- 0.90 

Ti02 0.38 

P20, 0.16 

MnO 0.1 

Total 100.1 

Average magnetic 

susceptibility 

1768 

1480 

2113 

2192 

2425 

5855 

3100 

3000 

7200 

4300 

4133 

4605 

1230 

4600 

3820 

Figures 1-7; Tables 1-5 23 

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