PREPARED IN COOPERATION WITH THE
ARKANSAS GEOLOGICAL COMMISSION,

MISSISSIPPI GEOLOGICAL SURVEY,
OKLAHOMA GEOLOGICAL SURVEY,
LOUISIANA GEOLOGICAL SURVEY,
TEXAS BUREAU OF ECONOMIC GEOLOGY, AND
TENNESSEE DIVISION OF GEOLOGY

QUATERNARY GEOLOGIC ATLAS OF THE UNITED STATES
VICKSBURG 4° x 6° QUADRANGLE

MISCELLANEOUS INVESTIGATIONS SERIES

MAP I-1420 (N1-15)

DEPARTMENT OF THE INTERIOR
U.S. GEOLOGICAL SURVEY

96° - 90°,
36° TE 95° 94° 93° 92° 91° fas 6 LIST OF MAP UNITS CORRELATION OF MAP UNITS
ps HOLOCENE
ow é = rs f, asa | ALLUVIAL SAND, SILT, CLAY, AND DELTAIC EOLIAN RESIDUAL
A GRAVEL ALLUVIAL DEPOSITS DEPOSITS DEPOSITS COLLUVIAL DEPOSITS DECOMPOSITION RESIDUAL DEPOSITS DEPOSITS SAPROLITE
Y [yk
€ I v ALLUVIAL SILTY FINE SAND a
4 LN A | aE
ii {o- ALLUVIAL SILT AND SAND
Hok
; © ALLUVIAL CLAY Sse
a
; ets ALLUVIAL CLAY
© asb\ NATURAL LEVEE SILT AND CLAY -
s Le Late Wisconsin
é -y HOLOCENE AND LATE WISCONSIN
: % DUNE SAND Wisconsin
ac Late Pleistocene
B u BOULDERY SANDY COLLUVIUM
£. = CHERT FRAGMENT COLLUVIUM
S SANDSTONE BLOCK COLLUVIUM °\. Early Wisconsin
i E QUATERNARY
i c ‘ QUARTZITE BOULDER COLLUVIUM
= b aS “ = ( SANDSTONE- AND SHALE-CLAST LOAMY
: COLLUVIUM
wD, \ iy ea | ACID SHALE-CHIP CLAY-LOAM COL- ace;
liddle Pleistocene
35° g _ LUVIUM
i
15 quel Zs LATE PLEISTOCENE
‘ie = y ALLUVIAL FINE SAND AND SILT
s\ O
2 z q ALLUVIAL CLAY AND SILT
ac
x j ALLUVIAL GRAVEL AND SAND Early Pleistocene
4 :
ae 2 ALLUVIAL SAND AND SILT
>| at , Y ALLUVIAL SILT AND CLAY
Ca : PLIOCENE
A : LATE PLEISTOCENE AND AND OLDER
( z eo MIDDLE PLEISTOCENE
5 d (ee) LOESS AND LOESSIAL COLLUVIUM AND
2 ALLUVIUM
i sb T
2. " ;
k LATE PLEISTOCENE TO DESCRIPTION OF MAP UNITS ; to medium quartz sand and clay to silty clay. Sand is SOURCES OF INFORMATION
4 . EVEELEIST GENE [UA] actuviat Graver AND SAND (Deposits of braided irregularly cemented to hard, limonitic masses;
4 EAR HOLOCENE stream terraces of Saucier, 1974)—White to gray or ; ; ARKANSAS
Q i é ~ s asl ALLUVIAL GRAVEL AND SAND b an ll-sort d het ‘art sand numerous limonite veins and nodules. Deposit grades
asa | ALLUVIAL SAND, SILT, CLAY, AND GRAVEL—Light- a il ree feds Orie licen ‘lee Es au fa i down into sandstone, shale, and siltstone bedrock. Adams, G. I., and Ulrich, E. O., 1905, Description of the Fayetteville
eer SS ALLUVIAL CLAY, SILT, SAND, AND gray, yellowish- to brownish-gray, or reddish-orange, Fee eek ide oF Mice cis Pile Aco oak Mapped areas include locally derived colluvium, quadrangle [Arkansas-Missouri]: U.S. Geological Survey Geologic
i g z E GRAVEL coarse to fine sand and subangular to well-rounded peb- erage eee ° eee ed Heed PI a alluvium, and bedrock outcrops. Thickness 1-15 m Atlas, Folio 119, 6 p.
j a interbedded or admixed silt and clay especially in flood A ish-brown, slightl i i
y opie PLisroceNe ocr pvvarer oa me amen lp Hed uth noeded tardy Ticino Pe aactreriemey ers Seana aoe ae Ss eee
ac te P [a] ALLUVIAL SILTY CLAY, SAND, AND sandstone, derived from older deposits. Mapped areas Jecally10-20mr- here: depostt fillerchannels cut in characterized by irregular, hard, limonite-cemented file copies of field maps, scales 1:24,000 or 1:62,500 are available
a y GRAVEL include swamp and organic muck deposits in underlying Pleistocene alluvial sand and gravel (asa) masses, nodules, and veins. Mapped areas include at Arkansas Geologic Commission, Little Rock, Arkansas).
ae ae 34 backswamps and on flood plains, and local colluvium [asi | ALLUVIAL SAND AND SILT (Sand and silt facies of Prairie younger locally derived colluvium, bedrock outcrops, McKnight, E. T., 1935, Zinc and lead deposits of northern Arkansas:
: Ve ALLUVIAL DELTA SAND, SILT, AND CLAY along margins of valley floors. Thickness 3-30 m terrace of Saucier, 1974)—Light- to dark-brown, red, and broad, low sand dunes of late Pleistocene and U.S. Geological Survey Bulletin 853, 311 p.
Le Riv os, zel i : as ALLUVIAL SILTY FINE SAND—Gray to light-brown and See bee, fine ee silty sand, locally inter- Holocene age. Thickness 1-3 m Purdue, A. H., 1907, Description of the Winslow quadrangle [Arkansas-
Z asa) © a rab lace = EARLY PLEISTOCENE TO PLIOCENE(?) brown be! sand; poorly to a sores omy xf ust chert and quart, m a rae ences Cn el oan (ayy SANDY DECOMPOSITION RESIDUUM?—Very dark Indiana Territory]: U.S. Geological Survey Geologic Atlas Folio 154,
US = : stratified; contains intermixed and interbedded silt ani » more abundant than in deposits o} jek j ish:
Z : z aNSAND clay. Comprises channel, verbank, and natural levee ihe otis erare fatten svi, Logally covered by this fe sendy lear t sty cay loam containing angus Purdue, A. H., and Miser, H. D., 1916, Description of the Eureka
ak SAND deposits of the Medssipph aid. Arkansas Rivets, Ovaites patches of loess. Mapped areas include organic silt and y Cay Sam eater ex Dare ‘deanale {Arkonere MlecourlicU §-'Gesloaical
5 pes : ‘lay depesiis of abandoned channcle and exbaw lakes, sandstone fragments and shale chips; developed prin- Springs-Harrison quadrangle [Arkansas-Missouri]: U.S. Geological
OW - ALLUVIAL PEBBLE GRAVEL AND SAND intermixed and interbedded gravel, sand, silt, and clay a eideed sana and ariscae ‘ ; cipally on flat to gently sloping terrain. May contain in- Survey Geologic Atlas, Folio 202, 22 p.
oo of Pleistocene age that becomes coarser with depth and Bnd Guid ed sand’and’slt deposits ot natural levees (tl): termixed eolian silt or fine sand and colluvium. Saucier, R. T., 1974, Quaternary geology of the lower Mississippi Valley:
a QUATERNARY AND TERTIARY Hanges in thleksvess trem: 10trm:to more shan (0 3 Tienes 25 nf lecally10.ma hitéidepost tls chan Thickness 0.5-2 m ‘Arkansas Archeological Survey Research Series 6, 26 p
2 zs: " , : . ‘ < 5 , 26 p.
G PE Cis Mapped areas include swamp deposits, muck of ox- nels cut in underlying Pleistocene alluvial sand and a] CLAYEY, FINE TO MEDIUM SAND AND FINE SANDY 1978, Sand dunes and related aeolian features of the lower
4 LIMONITIC SANDY DECOMPOSITION bow lakes, and scattered areas of dark-brown to black gravel (asg) : : ae ; sar ‘
~ : RESIDUUM organic clay. Thickness 3-10 m [- ee | ALLUVIAL SILT AND CLAY (Silt-clay facies of Prairie ter- CLAY DECOMPOSITION RESIDUUM?—Brown to Mississippi River alluvial valley, in Hilliard, S. B., ed., Man and en
7) BS =a (RB) atroviar sit anv sand—Grayish-tan to brown, race of Saucier, 1974)—Brown to red and dark-red ball, elavey; fine to medium: quar send snd orange ep eter Beton eden Ghenccr sean
UARTZ SAND DECOMPOSITION RE- ’ 4 : ‘ ‘0 yellowish-red, fine sandy, silty clay. In Louisiana, , p. 23-40.
cy Z . Q SIBUUM poorly sorted, irregularly bedded, locally clayey, silt, clayey silt characterized by numerous, closely spaced, commonly contains small fragments of lignite. Thin U.S. Soil Conservation Service (in cooperation with Arkansas Agricultural
Aken Fe and fine to very fine quartz sand; scattered interbed- circular depressions and small silty clay mounds. ‘ i i i 967, Soil ‘ati State of Ark
j g dad oe tnternnisedchcepeeEl 1. Mappedonik Depressions range from 3 to 150 m in diameter and where developed on layers of hard volcanic tuff in Experiment Station), 1967, Soil association map, State of Arkan-
— SANDY DECOMPOSITION RESIDUUM led or intermixed chert-pebble gravel.. Mapped: only heh A i Texas. Mapped areas include colluvium and bedrock sas: scale 1:1,000,000.
Na in Mississipnl whiete iis derived mainly from oldet\séss ae 1 wih Mant te voediumgray sity clay grading terops. Thickness 1-3 m West, L. T., Rutledge, E. M., and Barber, D. M., 1980, Sources and
; CLAYEY, FINE TO MEDIUM SAND AND FINE and loessial colluvium (ela). Mapped areas include downward to red-brown silt containing abundant dark- MEDIUM Te EINE Gr properties ef leess depesits: on’ Crowley's Ridge in Arkansas: Sell
‘asa SANDY CLAY DECOMPOSITION RE- organic muck and swamp deposits on flood plains. red iron-manganese “buckshot” pellets. Silt matrix con- FA De Cea Ee SANBY a SNP Se Societ 1 Anite Journal ‘i 44 : 353-358.
- 4 SIDUUM Thickness 5-10 m tains rare gravel lenses. Grades down into underlying pa ae he bee bi nagederae —Tan ‘ neeweciey = | Meee Be :
i iS . 7 i light-brown silty fine sand with small amounts of
2 : ac ALLUVIAL CLAY—Gray to reddish-brown, poorly to well- Pleistocene alluvial sand and gravel (asg). ' f .
ia : ay] MEPIUM T@ FINE: SILTY" SANP, SANDY, bedded, clay-dominant material representing overbank Mapped only in Louisiana along edge of Mississippi reddish-brown silty to sandy clay; chiefly quartz sand LOUISIANA
SILT, AND SAND DECOMPOSITION ; vaste ; River flood plain. Thickness 1.5-7 m; locally 50 in northern Arkansas. Thickness 0.5-2 m
cE. M deposits of the Mississippi and Arkansas Rivers. Con- er flood plain. Thickness 1. m; locally 50 m Bernard, H. A., 1950, Quaternary geology of southeast Texas: Baton
RESIDUU tains intermixed and interbedded fine sand and «ilt and where it fills paleochannels cut in underlying Pleistocene 5 cpa abe CLAY. ence sla) ee Rouge, Louisiana State University, Ph.D. dissertation
; i ‘i eee -—Light-brown to reddish-brown very fine sand, 2 ie an
[se] FINE SANDY, SILTY, CLAY DECOMPOSI. oe serail ef ae sewn ie black netic ny. ray clay reddish-brown sity clay, and come gavel Berry, E. W., 1916, The flora of the Citronelle formation, in Shorter
ms TION RESIDUUM lapped areas include swamp deposits and muck that LATE PLEISTOCENE AND MIDDLE PLEISTOCENE Claws chietly sandstons: A few aie “af limedone, contributions to general geology: U.S. Geological Survey Profes-
a accumulated in oxbow lakes. Overlies intermixed and Po SSANDILSESGIALICOuEIvION BNE ALLUYE Mapped afeas ticle Golauiutn anid bedsoek ollterope sional Paper 98-L, p. 193-208.
7 y a - CLAYEY SILT DECOMPOSITION RESIDUUM interbedded gravel, sand, silt, and clay that coarsens re} Sik WWEIGE: LEMS ldlen-ewe, SUaNER: Theknses 6.625 %n : Fisk, H. N., 1938, Geology of Grant and LaSalle Parishes, Louisiana:
SANDY CLAY DEC with depth and is about 10-70 m thick. Thickness of = a) ee mee . 7 Louisiana Geological Survey Bulletin 10, 246 p.
By OMPOSITION RESIDUUM alluvial clay 3-12 m; locally 20 m where deposit fils brown to yellowish-brown silt mixed with clay and fine CLAYEY SILT DECOMPOSITION RESIDUUM?—Olive- 1940, Geology of Avovelles and Rapides Perishes, Louisiana:
SMECTITIC CLAY DECOMPOSITION RE- harinels in unideriging Plelstecene’ alluvial’ sand sand; locally contains thin lenses of very fine to fine brown to grayish-brown clay loam to silt loam con- Louisiana Geological Survey Bulletin 18, 240 »
i 7 uartz sand. Near rivers, deposits are cut by ravines taining small fragments of sandstone and chips of shale i : : ¥
SIDUUM ALLUVIAL CLAY (Backswamp deposits of Saucier, 3 age ond form ‘ dae. | ig M i include: celluvi d Isphording, W. C., and Lamb, G. M., 1971, Age and origin of the
1974)—Light- to dark-gray, yellowish-gray, or -30 m deep, forming extremely rugged terrain. In in lower part. Mapped areas include colluvium an " say : 7 i ‘i
va QI we sity cray pecomposition Re- brownislcaraycclay, siky. clay, and organic-eity clay, southeast Mississippi, east of mapped area, thin loess bedrock outcrops. Thickness 1-1.5 m Heer e eee eet ermine cen.ogeet Society ef/Amants
$ SIDUUM Contains a few thin layers of medium to fine quartz sand obstits \Geally/omy ans inferinined: anieintetvedaea |e ils edhe ae eel lg SE Saucier, R.T., 1974 Guoternat ology of the lower Mississippi Valley:
. i SANEIGRAVED.SI-T; ANEICEAV BEEGK: and thin lenses of reworked fine chert-pebble gravel. with other mapped units. Thickness ranges from a max- yellow, orange, reddish-orange, or greenish-gray, Arkansas Archeological Survey eo ccarch Stes6 BE oa a
g POSITION RESIDUUM : Peat layers, abundant organic particles, and wood imum of 30 m along the Mississippi River to 3 m at mottled, poorly sorted, fine sandy clay; in places con- Stringfield, V.T., and LaMoreaux, P. E., 1957, Age of the Citronelle
fraigin Gate are:Witekependea thveuaheltt BEBSAESE eastern limit of mapped unit tains ened - coarse sane or pebbly sand, chialy Férisatiod @cthe GUI coselal Blase Amatlesy, Assocletion vot
SILTY OR MICACEOUS SANDY CLAY DE- cumulated in abandoned river channels and overbank quartz. Mapped areas include local colluvium an i i Z
| COMPOSITION RESIDUUM flood areas (backswamps) 1k f TATE’ PLEISTOCENE TO /EARLV/PLEISTOCENE bedrock outcrops. Thickness 1-2 m Fen ee eae octets Aye nds ps 142-76,
ps) near natural levees o G 5 + sof th , Woodward, T. P., and Gueno, A. J., Jr., 1941, The sand and gravel
SHALY CLAY AND CHERTY be Mississippi River. Thickness 3-10 m; locally 20 m where [BA avtuviat craves ano SAND (Terrace gravel ofthe [EE smectic cay pecomposition REsIDUUM?— Gepssis'of Loutsanar Loulnane Geolenscal Survey Baleier9,
CLAY DE- deposit fills channels in underlying Pleistocene alluvium Arkansas River restricted to mountainous terrain in Light-brown to brown, reddish-brown, yellowish-gray 365 p.
COMPOSITION AND SOLUTION RESID- (URI) satura Levee si-t aND CLAY—Brown to grayish- Arkansas and Oklahoma) —Light- brown, yellowish- to or mottled pinkish-orange, clay, silty clay, silt, and fine
UUM brown, light- to medium-gray silt and silty clay; includes reddish-brown, and dark-red, medium to coarse sand; sand, locally containing calcareous nodules. Clay is
Se CHERTY CLAY SOLUTION RESIDUUM small amounts of fine quartz sand. The clay and silt contains abundant pebbles and cobbles of chert. Ter- smectitic; expands when wet; shrinks and develops a MISSISSIPPI
locally contain abundant plant fragments. Deposit tace remnants are 10-12 m above present flood plain crack structure, called gilgai when dry. Mapped areas Bicker, A. R., Jr., 1969, Geologic map of Mississippi: Mississippi Bureau
DARK CLAY SOLUTION RESIDUUM moderately to highly oxidized; forms broad, natural of Arkansas River. Thickness 2-5 m ; include local colluvium and bedrock outcrops. of Geology, scale 1:500,000.
Z, CLAY SAPROLITE levees 2-5 m high along present and former courses [=a | ALLUVIAL CLAY, SILT, SAND, AND GRAVEL (Undif- Thickness commonly less than 1 m, locally 2 m Bicker, A. R., dr., and others, 1966, Claiborne County geology and
G of Mississippi River. Thickness 1-6 m ferentiated alluvial terrace deposits of Deweyville, Beau- [=e FINE SILTY CLAY DECOMPOSITION RESIDUUM2— mineral resources: Mississippi Bureau of Geology Bulletin 107,
a HOLOCENE AND LATE WISCONSIN mont, Lissie, and Willis age in Texas; undifferentiated Black to dark-gray or dark-brown silty clay; light brown 174 p.
a ———  conTAcT =a URE SAND Gh inoren ina wtnechuin send idades terace deposits In: Aukensas ad Laem to reddish brown where oxidized; contains areas of fine Brown, G.F., 1947, Geology and artesian water of the alluvial plain in
"a ms + own to reddish-brown, fine to coarse sand and sil i ecteeinnt. q ‘. .
_ ; : : 5 7 sand and chert-pebble gravel in Arkansas. Clay i northwestern Mississippi: Mississippi Bureau of Geology Bulletin 65,
ess nae a Posies tee of some sl, clay, and organie matter, The dunes are mos pinkish-orange and yellowish-tan mottled clay, and well strongly iiaalie; Gepanids when ret, hiner ond forms 424 p. PP pp Y
saesithc eilied derived lord calderesin cod See aes cca canons of Saucier founded te subangular quartz andl chert gravel.'clasts a.crack structure, called gilgai, when dry. Mapped areas Brown, G. F., and Guyton, W. F., 1943, Geology and ground-water
near Vellowstone Natisial Paik US 7%) underlain by alluvial graveland sand {asb) 1-4 cm in diameter. Mapped areas include local col- include local colluvium and bedrock outcrops. Thick- supply at Camp Van Dorn [Mississippi]: Mississippi Geological
be, (een) BOULDERY SANDY COLLUVIUM!—Tan to brown, luvial deposits. Thickness 0.5-5 m nets 0.521 me locally 2a Sirvey Bulletin 66.68 p.
0 ar«-grayish-brown, or yelowish-brown fine sand, silt, (a) SAND, GRAVEL, SILT, AND CLAY DECOMPOSITION Grim, R. E., 1936, The Eocene sediments of Mississippi: Mississippi
32° oer 32 and minor silty clay containing sandstone boulders; MIDDLE PLEISTOCENE ‘ ; : .
96° 91° INTERIOR—GEOLOGICAL SURVEY, RESTON, VA—T 905 boulder field * fs RESIDUUM2—Dark-gray, olive-gray, grayish-brown Geological Survey Bulletin 30, 240 p.
95° 94° 93° 92° NOTE: This map is the product of collaboration of State some boulder iclds at suiface. Developed env moderate Gs] ALLUVIAL: SIETY CLAYs SAND,, ANB GRAVEL to reddish-brown clay loam, silt loam, fine to medium Mellen, F. F., McCutcheon, T. E., 1940, Yazoo County mineral
geslogical surveys, universities, and the U.S. Geeleaical to steep slopes underlain by highly folded and faulted Reddish-brown to dark-gray silty clay; lenses of sand sand, or clayey sandy gravel, contains bells calciuny ear resources: Mississippi Geological Survey Bulletin 39, 132 p.
Base modified from U.S. Geological Survey SCALE 1:1 000 000 Compiled in 1982-83 Survey, and is designed for both scientific and practical pur- sandstone and shale. Thickness 0.5-1.5 m and scattered chert and limestone gravel in basal part. Beiiate: concretions and limentte concretions. Sand Mellen, F. F., McCutcheon, T. E., and Livingston, M. R., 1941, War-
Intemational Map of the World UMW Series, 1986 ry i % 0 15 1 105 8H REE Be MPa, oman poses. It was prepared in two stages. First, separate maps and _ CHERT FRAGMENT COLLUVIUM!—White to gray, Underlies a sequence of river terraces and is mapped chiefly. quarter gravel, 2-10 cen’ Ww’ diaedeter, 16 af ren County mineral resources: Mississippi Geological Survey Bulletin
Moditied Polyconi Projection a map explanations of the parts of States included in the angular te subroutided chert atid navacullte fagments only in Oklahoma in northwestern part of the novaculite, quartz, quartzite, and sandstone. Clay is 43, 140 p.
% a 2 50 MILES quadrangle were prepared by the State compilers indicated ea bom diaireter in'a. gray te datk-grayish=brown, quadrangle. Deposit contains Pleistocene vertebrate mostly smectite; expands when wet and shrinks when Moore, W. H., and others, 1965, Hinds County mineral resources:
on the inset diagram, Areas of Responsibility. Second, these silty clay matrix. Mapped areas include bedrock out- fossils in places. Thickness 3-15 m dry. Mapped areas. include local colluvium and Mississippi Geological, Economic, and Topographic Survey Bulletin
CONTOURS IN METERS ABOVE MEAN SEA LEVEL maps were combined, integrated, locally supplemented, and erops and abundant talus material on moderate toisteep [an | ALLUVIAL DELTA SAND, SILT, AND CLAY (Fine- bedrock outcrops. Thickness 0.5-2 m 105, 244 p.
NATIONAL GEODETIC VERTICAL DATUM OF 1929 related to a uniform map symbol classification, The map unit slopes. Thickness 0.25-1.0 m grained channel facies of Bentley and Montgomery For- Ee SILTY OR MICACEOUS SANDY CLAY DECOMPOSI- Priddy, R. R., and McCutcheon, T. E., 1942, Tallahatchie County
descriptions also were combined, supplemented, and coor- ee SANDSTONE BLOCK COLLUVIUM!—Orange to mations of Fisk, 1938, 1940, in Louisiana) —Light-gray TION RESIDUUM2— Brown silly clay and micaceous, mineral resources: Mississippi Geological Survey Bulletin 50, 157 p.
dinated with those of other maps of this series so that individual orange-brown, slightly silty to slightly clayey, well- to brown or orange-brown, medium to fine sand, silt, fire eanidyiclay, commonly limenite cemented, Lower Saucier, R. T., 1967, Geological investigation of the Boeuf-Tensas Basin,
unit descriptions are applicable throughout both this map and rounded, medium to fine sand containing many angular and sandy clay; some interbedded lenses of gravel. In part nay locally contain fragments of lignite and petrified lower Mississippi Valley: U.S. Army Engineer Waterways Experi-
- . . - . . . . . . . 6° ‘ all other maps of the series. Diagrams accompanying the map to subround, boulder- to cobble-size sandstone blocks; places, deposit characterized by channel-and-fill struc- wood. Mapped areas include local colluvium and ment Station Technical Report No. 3-757.
126 420 4 108 102: 96 0° 84 18 2 86° 36% 90' were prepared by the editors. local areas of orange sandy clay contain fragments of tures and graded bedding that indicate deposition in bedrock outcrops. Thickness I-2 m Snowden, J. O., Jr., and others, 1968, Loess investigations in Mississippi:
OTe, im is a \ | Differences in mapping or interpretation in different areas milky quartz. Developed on steep to moderate slopes. meander channels, point bars, and braided channels | 0 SHALEY CLAY AND CHERTY CLAY DECOMPOSI- Mississippi Bureau of Geology Bulletin 111, 267 p.
Mery 7 rA_Isaskatciewanl| wanton onan 7 \ ‘l Mapped areas include many bedrock outcrops. on landward part of delta plain. Locally, surface of Thomas, E. P., 1942, The Claiborne: Mississippi Bureau of Geolox
we ey, ese 1 were resolved by correspondence to the extent possible. Most " iy TION AND SOLUTION RESIDUUM23—Yellowish- ipp! gy
Moorenay, ey =a - ty simply reflect differences in available information or differences Thickness 0.5-1.5 m deposit characterized by clusters of pimple mounds or ieiteaaigh llowish- to teddich-bi 1 d Bulletin 48, 96 p.
mee [| mee || tee | yattieton a fa ‘ ; ; QUARTZITE BOULDER COLLUVIUM!—Dark-grayish- mantled by low dunes of Holocene age. Thickness eaten) nbebileniatbapanmalintiiianiae: Sale Vv : Mississippi i
7 vanes | | nts in philosophies of mapping. Such differences serve to en- y 9 i cand/and allt lasts chisty ef’ estal, F. E., 1950, Carroll County geology: Mississippi Geological
= oN i farther invest brown, reddish-orange, or tan, sandy to silty clay con- 5-15 m iinet amounts efSand and silt. Clastsichiefly ef iren- Survey Bulletin 67, 114 p.
7m i = aan s os ! cong i aver ation: th ficial ts of th taining abundant milky quartz fragments and blocks of stained, chalcedonic chert fragments and shale chips. 1956, Panola County: ‘geology Mississippi Geological Surve
Mey a1 ici i i * ‘i i ' S
tele ding | yg Me i oe ai S OKLAHOMA eee tandory percente! tie surticial ences o! Bie quartzite and either phyllite or sandstone 5-20 cm in EARLY PLEISTOCENE TO PLIOCENE(?) Base is: very uneven; residuum/extendsdeenly inte Bulletin 81, 157 ° ,
{ tons] atts y ar United States have been mapped and described. Traditionally, dniictee. Deuelopiel sav atecs te anoaeiale underlying bedrock along fractures. Mapped areas in: , 187 p.
i a a Cnes lA Geom fe | mapping of surficial deposits has been focused on glacial, See rend borin in ALLUVIAL CHERT-PEBBLE GRAVEL AND SAND clude locally derived sheetwash on steeper slopes, and
a ami E pMING — wis Vek a 1 ARKANSAS alluvial, eolian, lacustrine, marine, and landslide deposits. Mapped areas include many rock outcrops. Thickness (Gravel of Crowleys Ridge in Arkansas) —Pale-buff, dock euleions! THicahend 85-2 4
pS Ss Tue | atte | auton setbes, ee nS | Slope and upland deposits have been mapped in detail only esl . asieeren fai ocoly tn Alanees oy oes Em light-brown to dark-brown pebbles, cobbles, and a few [se | CHERTY"GUAY’ SOLUTION? RESIBUUNE Reddish. OKLAHOMA
2 Mang aa NEBRASKA ne_| wo | Lowe fe : i in restricted areas. However, an enormous amount of vi NE ed Se ECUAST oe OL.LU- boulders in a matrix of fine sand, silt, and clay; poorly orange, grayish-brown to dark-brown clay and silty clay Burwell, A.L., and Ham, W.E., 1949, Cellular products from Oklahoma
wl Peal Mian | cease | | T oeas | 80 Le wt ee ! engineering construction and many important problems of TD, Gt enero to veloulsh brown sorted; unconsolidated; locally stained with iron or containing sobangilah to “angolar, white, tah, BSE volvanic ash: Oklahoma Geological Survey Circular 27, 89 p.
aye ano nit ane wy Ll Te SS land use and land management are associated with regions silty le silt, and.sand sentaining angular te. sub- manganese oxide. Silt and clay increasingly abundant seen, of gray, ravellito'cobblerasaichert clasts, Cons Gray, Fenton, and Galloway, H.M., 1969, Soils of Oklahoma: Stillwater,
ny vec cesT i that have extensive slope aiid upland deposits (calluviuia, angular sandstone and shale fragments. Developed in upper part. Clasts mostly well rounded, a few ihwslabs of sane ‘i locally lime Oklahoma State University Agricultural Research Miscellaneous
P = es ON? ae, ) ‘a d saprolite f Ie). Th terials h on moderate to steep slopes. Mapped areas include arigqulars‘comigosed jprimatily of chert, anarse quartate tains slabs of sandstone, siltstone, and locally limestone Publication. 65
W eae ‘OKLAHO? “i i Cr 1 Tesi uum, an Saprel ie, for exam! el I. ese materials have sparse outcrops and patches ofeolianisand. Thickness a + a ‘ rs cht + q " y or dolomite at or near the surface. Contact with underly- ‘ublication, P: ; 7
es, Ay [nae { many different physical characteristics. Therefore, an effort eee. sat stone, ani clayton, endiel y quart, grains ing bediock is ant abfupt pialacled. ‘karst surface. lzett, G.A., and Wilcox, R.E., 1982, Map showing localities of the
ee ee been made to classify, manson describe there deposts, Pa ACID SHALE.CHIP CLAY-LOAM COLLUVIUM!—Red- e nae foun ine: seul ite, an dope ane ine Mappéd!'areas include’ colluvitim’ and ‘bedrock ex- Huckleberry Ridge, Mesa Falls, and Lava Creek ash beds (Pearlette
TEAS a TEXAS t @ ased in large part on unpubl lis ed interpretations of in- dish=-to greenish:brown or darisaravish:brown sandy yanite and sillimanite cae fe probable source in head- posures, Where colluvium overlies the residuum on family ash beds) of Pliocene and Pleistocene age in the western
; a eh ! dividuals, published and unpublished subsoil data, and the to silty clay containing ahale chips and subangular te water area of ancestral Mississippi River. Deposit steep slopes, both deposits tend to be unstable. United States and southem Canada: U.S. Geological Survey
at ih distribution of bedrock parent materials. The classification is ieimded. clasts ‘as. much ag 15 Clasts characterized by channel-and-fill crossbedding; foreset Thickness 0.5-1.5 m, locally more than 5 m Miscellaneous Investigations Series Map I-1325, scale 1:4,000,000.
LOUISIANA de, but represents a first step toward a more refined and wemrounded ¢ Ieee, Sees: wee beds dip mainly west or south. Thickness as much as RRETIEARL, id Marcher, M. V., 1969, Reconnaissance of the water resources of the
et ' atl odes are chiefly sandstone, but locally are chert and quart- an DARK CLAY SOLUTION RESIDUUM—Yellowish-gray, Fort Smith quadrangl Lee eee oon
/ product. a 4 . rt Smith quadrangle, east-central lahoma: Joma
, 5 a is | all ‘lie For Ali ipOase, the mp differen eid @aalernany zite. Developed on moderate to steep slopes. Mapped AUDUVIAL PEBBIE GRAVEL AND SAND (Citronelie For dark-gray to black, or dark-brown, fine, sandy clay con.

LOESS DISTRIBUTION AND THICKNESS, IN METERS

[oss
oa HEE 50-100

INDEX TO INTERNATIONAL MAP OF THE WORLD 1:1,000,000
TOPOGRAPHIC SERIES
Showing location of the Quaternary Geologic Map of the Vicksburg
4° x 6° Quadrangle in red [U.S. Geological Survey, Miscellaneous In-
vestigations Series, Map I-1420 (NI-15)] and other published maps in
the Quaternary Geologic Atlas of the United States in yellow.

2.5-5.0

QUATERNARY GEOLOGIC MAP OF THE VICKSBURG 4° x 6° QUADRANGLE, UNITED STATES

State compilations by
Drew F. Holbrook, William A. Gilliland, Kenneth V. Luza, David E. Pope, E. Gerald Wermund,
Robert A. Miller, William V. Bush, Kathryn N. Jensen, and William D. Fishman

Edited and integrated by
Gerald M. Richmond, David S. Fullerton, and David L. Weide
1990

QUATERNARY GEOLOGIC ATLAS OF THE UNITED STATES

RESPONSIBILITY FOR STATE COMPILATIONS
(1) ARKANSAS GEOLOGICAL COMMISSION
(2) MISSISSIPPI GEOLOGICAL SURVEY
(3) OKLAHOMA GEOLOGICAL SURVEY
(4) LOUISIANA GEOLOGICAL SURVEY
(5) TEXAS BUREAU OF ECONOMIC GEOLOGY
(6) TENNESSEE DIVISION OF GEOLOGY

surficial deposits on the basis of a combination of criteria, such
as lithology, texture, genesis, stratigraphic relationships, and
age, as shown on the correlation diagram and indicated in
the map unit descriptions. Some geomorphic features, such
as sand dunes, are distinguished as map units. Erosional
features, such as stream terraces, are not distinguished, and
differentiation of sequences of alluvial deposits of different ages
is rarely possible at a scale of 1:1,000,000. Most landslide
deposits also are too small to be shown at this scale.

For practical purposes, the map is a surficial materials
map, on which materials are distinguished on the basis of tex-
ture, composition, and local specific characteristics such as
swelling clay. It is not a map of soils as soils are recognized
and classified in pedology or agronomy. Rather it is a general-
ized map of soils as recognized in engineering geology, or of
subsoils or parent materials from which pedologic and
agronomic soils are formed. As a materials map it serves as
a base from which a wide variety of derivative maps for use
in planning engineering, land use, or land management pro-
jects can be compiled.

areas include rock outcrops and talus on steep slopes;
small alluvial fans of sand and angular gravel on
moderate slopes. Thickness 0.5-1.0 m

LATE PLEISTOCENE

ALLUVIAL FINE SAND AND SILT (Deposits of Deweyville
terrace of Saucier, 1974, on Ouachita River) —Light-
gray or light-brownish-gray to mottled red and brown,
fine to very fine quartz sand and silt, containing scat-
tered lenses of clay and layers of quartzite and fine peb-
ble gravel composed of chert. In southern Arkansas,
the sand and silt underlies two low terraces; pebble-
gravel lenses include clasts as much as 5 cm across.
Abandoned ox-bow channels on the terrace surfaces
are filled with interbedded silt and clay. Thickness
2-15m

ALLUVIAL CLAY AND SILT (Deposits of Deweyville ter-
race of Bernard, 1950; Saucier, 1974)—Light- to
medium-gray, clay and silty clay. Poorly to well sorted,
poorly to well bedded. Locally includes admixed or in-
terbedded fine quartz sand. Thickness 3-5 m

mation)—Light-gray to orange-brown, orange, or
reddish-orange, gravelly, coarse to fine sand; includes
lenses of moderate- to dark-red sandy silt and white
to light-gray clay. Gravel consists of subangular to
subround chert or quartz granules to medium-size peb-
bles, commonly in a loose, coarse sand matrix. The
Citronelle Formation is considered middle Pliocene to
possible early Pleistocene in age on the basis of fossil
leaves found in Mississippi (Berry, 1916; Stringfield and
Lamoureaux, 1957). A vertebrate fauna, collected from
a dark-gray clay beneath oxidized sand typical of the
Citronelle Formation in Alabama has been assigned a
Hemphillian (middle Pliocene) age by F. C. Whitmore
(Isphording and Lamb, 1971). Mapped areas include
locally derived gravelly sand, alluvium, and colluvium.
Thickness variable; as much as 60 m

QUATERNARY AND TERTIARY

(==) LIMONITIC SANDY DECOMPOSITION RESIDUUM2—
Dark-reddish-brown, brown, or yellowish-brown, fine

taining scattered, very light gray, chalky, calcium car-
bonate nodules and marcasite concretions. Relatively
high degree of plasticity; occurs in areas of low relief
and rests in abrupt contact on underlying limestone
bedrock. Mapped areas include small deposits of col-
luvium and bedrock exposures, the latter chiefly in areas
of high relief. Thickness less than 1 m

CLAY SAPROLITE—Red to dark-brown clay saprolite
developed on nepheline syenite. Clay contains residual
angular, subangular, and rounded boulders and core
stones. Includes some bauxite and areas of grus.
Thickness 0.5-3 m

ICOLLUVIUM, for purposes of this map, is defined as material
transported and deposited by mass-wasting processes. In this quadrangle the
processes are chiefly creep, solifluction, mudflow, frost heave, landslide and
sheetwash.

DECOMPOSITION RESIDUUM, for purposes of this map, is defined
as material derived primarily by in-place chemical decay of clastic rock with
no appreciable subsequent lateral transport.

SSOLUTION RESIDUUM, for purposes of this map, is defined as
‘material derived by in-place solution of carbonate rock or carbonate-cemented
rock with no appreciable subsequent lateral transport.

Geological Survey Hydrologic Atlas HA-1, scale 1:250,000.
Marcher, M.V., and Bergman, D.L., 1984 Reconnaissance of the water
resources of the McAlester and Texarkana quadrangles, southeastern
Oklahoma: Oklahoma Geological Survey Hydrologic Atlas HA-9,
scale 1:250,000.
Miser, H.D., 1957, Geologic map of Oklahoma: U.S. Geological Survey
and Oklahoma Geological Survey, scale 1:500,000.

TEXAS

‘Texas Bureau of Economic Geology, 1965, Geologic atlas of Texas, Tyler
sheet; scale 1:250,000.

——__1966, Geologic atlas of Texas, Texarkana sheet; scale
1:250,000.

LOESS INDEX MAP

Thorp, James, and Smith, H.T.U., 1952, Pleistocene eolian deposits
of the United States, Alaska, and parts of Canada: National Research
Council Committee for the Study of Eolian Deposits, Geological
Society of America, scale 1:2,500,000.

for sale by U.S. Geologeal Survey, Map Distribution,
Box 25286, Federal Center, Denver CO 80225