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AlluviumMainly <illuviil silt, sand, and gravel In floodplains and diy washes loosely consolidated withlocally Interbadded ccllche.

Sand and Gravel, undifferentiatedGravel in a silt and sand matrix poorly sortedmoderately Itratifiad. Gravel includes clasts ofvolcanic pr<nitic <Ind metamorphic rocks.

Colluvium

Qco

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QTbf

Basin FilliUndffarenllated sand and silt 01 Ihe ground

surface,sut surface moderately to wen atrat-iIfad, In eluder Palo Verde cloy

—Tvfnhhih m//

Fan DepositsGravel ln o ~ ilt and clay matrix, poorly mrted,moderately stratified. Gravel includes ctasteprirnaruy of volcanic and metomorphio materialwith o minor amount of granitic debris.

Tertiary VolcanicsTvu —undifferentiated basalt and andcsne

TVtl-basalt dnd olivine basalt

Tvt —tui',includm auartx lotite,weldrddo<i<a, and tuffoccous sandstone.

ARIZONA

Flagstatf

Arkoslc conglomerate ond sandstone Not exposed 01flic surfaceiencounteredin explor~tory borings.

h I

pf gr;

SITE LOCATION

Phoenix

Tun~on

Grantic basement Includes fouoted and nonfoliotadigranfc rock Not exposed rrt thesurfuca,encovntemd

in exploratiiry borlnp».

Vole lnic FanglomeraleiVolcanc priivel-predominantly basaltir. In com-iiposton,ln 0 sut and matrix poorly sortedl

angular to subrounded, poorly strati fled<rarecleats of metamorphic material presentl materialsrange from moderately consolidated to very

densel'ementedwith couche.

EXPL ANATION

~OT b

Arlington Basaltsuphtly porphyritic blockouvine basalt flow.

0 2000 4000

FEET

Gila River Gravel,40foot Terrace level

Dike

ContactDashed where approximately located

Fault

Dashed where approximatt:ly located

Buried Fault

Inferred from geophysical surveys

~ py 2 Exploratory BoreholeI

~ Geologic Section

. photo Lineation

NORTH

Arizona Nuclear Power ProjectI'alo Verde Nuclear Genecatin~ Station

Units I, 2 & 3

GEQLOGZG h1AP OF SITE AREA

Figure 2 5-13

August 257 1975inPP-I 4 —288 4-4 4e

amendment 10

Seismic Line$1-2cBackhoe Trench LocalityStrike and Dip Flow Joints

~4e Strike and Dip of Flow Bedding