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<br /> OFSCRIPaION OF MAP UNITS .y
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<br /> r Send the.(Holocene) Windblown sand and dune sand
<br /> �J Flood,fl n deposit+ (Holecam) Cay Wt. and some sand near Stockton T 0,;,, , `Brush Lake
<br /> cones:of muck,,hat.and other organa sols. In placesnnay Include part O Vieyl�,
<br /> of the Modesto Formation(Pleistocene)
<br /> ORrvo deposits (HOloane) 3 avwl, same. stit. and minor amounts of clay: PW 'SP
<br /> depovlad along channels,flood Plains."natural I..of main streams. ss
<br /> In Porous may me cede part of Modesto Formation(Pleistocene)
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<br /> Lo.,krine ant err h de oafta (PllaeaM to He...) Clay Silt, and come 2
<br /> sand: in subsurface include three widespread clays: A play(Pleistocene
<br /> and Holocene?).C clay(Plectoccurai and modified E clayPleistocene), Ciel is Ma from R.W.Pa e,1986,U5G5 ProFeooional Pa 1401-C.
<br /> --includes Corcoran Clay Memo.of Tulare and Turlock Lake ormaUans oo P 9 Per
<br /> hate FWc]Conti...Ul rucks and deposils(Miocene to Hol...) Heterogeneous min of
<br /> generally pearly sorted clay,sill.Mnd,and caval;some beds a1 claystone,
<br /> younger Andsm and lolderalle. Pen liur. ,normal hnit+: A GELOGIC MAF OF THE
<br /> antl continuants)dentistsa(P iocene and!Plelismcle el three formation,al.
<br /> Pleistocene age: Modest..Riverbank,and Turlock Lake;Tulare Forma.
<br /> bSAN JOAQUIN VALLEY
<br /> on (Pliocene and Pleistocene) on western side 1 valley, Laguna Fon
<br /> Itee matlO.(PLon
<br /> cae)o stern easdRiven,er.and Karn RivFormation(Miocene to
<br /> Pleistocene?)on southeastern Part
<br /> BEValronic rocks and deposits (Miocene and Pliocene) Massive tuft with large
<br /> fragments of 'vesicular basal, northwest of T,ei tuff, and volcanic
<br /> brecoa at south end of valley
<br /> Ir Type Continental rocks and deposits(Miauna and Pliouna) Gravel. no.silt,day,
<br /> c.gionfroll sandstone, siltstone.and claystone, contain andectic
<br /> .atenal, Rinulaally Mehrten Formation (Mlocene and Pliocene) On
<br /> eastern side of valley;include continental eamvaknts of Etchior n Fon
<br /> mahvion (Mcone and Pliocene) o western side of valley, and Chanac
<br /> Formation(Mmonne)on southern part
<br /> 6. likgq Cantinentetnd rine racks and deposits(Mioan<and Pliocene) Gravel,
<br /> ,and, sen, lay, silly sandstone,and si t:m.-rInclude continental and 5Ca1e:1:500,00
<br /> mci marine eants of San Joaquin Formation (Pliocene) and Elchegoin
<br /> Formation(Miocene and Pllocene) 1 in -8 nti
<br /> Moine coda and dposits(Ecuana,Oligocene,Mbabane.and Plioana) Sand,
<br /> clay,silt, sandstone. shale. mudstone,and siltstone. On west..side of
<br /> too, valley Include the San Joaquin and Etchegoin Formations. Temblor
<br /> Formation (Oligocene and Miocene) and Kreyenhagen Formation
<br /> (Eocene). On southeastern side Include the Santa Marganta Formation of
<br /> Silt. authors,the Round Mountain Silt,the Olc.Sand,the Freeman
<br /> and the Jewett Sand(including the Pyramid Hill Si Member)(all
<br /> M..c.),and the Vodder Sand(Oligocene)
<br /> e. T;---I Continental racks and deposits(Oligo...and Miocene) Gravel,conglomerate,
<br /> sand,tuffaceous Wed.Clay,and Andy day;contain rhyolibc material en
<br /> eastern side of valley. Principally Valley Springs Formation(Oligocene
<br /> and Miocene)o eian side of valley;...armed fanglom.ales(Miocene)
<br /> and Bona GraveIndia-(Miocene)In the southern part
<br /> AilContlnantal rocks and deposits(Eocene to Micheal Conglomerate,sandstone,
<br /> "Woo coraolldned forglom.ate,claystone,tuff and tuft breccia;near Fresno
<br /> sisl of lutfaceaus sand and gavel. Near Bakersfield include the
<br /> Bo lvllla Fi,NI.merale (Oligocene and Minn..) and the Walker For-
<br /> mation(Eocene m Mi.cem.)
<br /> TO Continental rocks and deposits(Eocane( Conglomerate and sandstone;along
<br /> eastern side of valley contain aneuaka. Prin ipally lone Formation
<br /> Iaaa (Eocene)on eastern We.1 valley
<br /> U...fermlty l0 E R SO
<br /> 3fi4 Marine rocks(RsT.tury) Sandstone,shale,siltstone,and some limestone. P 1
<br /> chiefly on western side of valley; ,n places contain abundant secondary NEIL O.ANDERSON&ASSOC.,INC.
<br /> gypsum. Include Moreno Formation (Cretaceous and Paleocene) and s w
<br /> Yet PanKhe Formal,on(C,daews) GEOTFCHHGL SERVICES-ENGINEERING IABOBATCal T Y,
<br /> T1No,utm to la6.G i5Na O a•
<br /> ®Granitic soda(Pre Tf rtbry) Chiefly granitic rocks on eastern side of valley,In (achaar-a at 9 tP
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<br /> placonsMs of mafic intrusive mchs S
<br /> ces C
<br /> FPTds Matamoryhic rocks (Pro-Tartiary) Metasedimentary,metavolcanic and other ('late FJ
<br /> moohniv.hic rocks on eastern ides of valley
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