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<br />, ('1."0.' ~'I ~'l"
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<br />\.\.40
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<br />12. BT.\ TF~'i-~J r l)j' :~r:l! :,\; rWh"~ ^t'-lP r,~C()j\:nMr(; I~i .'~:;IILl~; r nf./
<br />l;SL:" ::,,: ; ',\l., ',\. :l:-~(' \.\), li:.i._ ,\ . JI I Jj"\:( ""',,,W'IC ^i-I:'1l1!\1. I,'; VIr:W
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<br />CO(t(~
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<br />l-C;-)
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<br />:-.'."",'(,,) P. A, Emery ,1n<l A., ,J. nn~ttch"r
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<br />[);':I-;IIIII
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<br />W111l
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<br />nt.III' I, 1~111"1':1I111 "i~tr'C't
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<br />USGS, Bldl), 25, F,,'deral r,,'''t~r, D~nver, r,llln.. 80225
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<br />f'r(l;""t No, ~nG Tille Cnln-26-C - WRter ReRn\lrC~R nf the SRn Lllis Vnlley, Cnln,
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<br />COllnty AIRmosn. Cone.1oR, Cn.t j 11 a.
<br />Rio Gr:-lnde, and Sl1gw1f'he
<br />Summ;jry ot mos\ impor\;H)t or mo~\ in\~rp.f.till[: ~~r.i(~nti[ic ;ll1rl (~r.nllolllic iirulillj: Of cCIIII.lll:.;"1l rl..;..:hl~d a~ ;\
<br />suit of recent work 011 nrOIC:cL ('sl'I..' V,'/r/lru' ,'\ of 11111\: IC,','Il/ .\llll1..d ;;....1,.11' I',II(. ;'"[",,.)
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<br />Sl~tc
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<br />Colors do
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<br />rf~-
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<br />G~ol'hY8icsl LOllging Delin"nt~s Wntf'r Tnhle and Arte.Rian A~\I1 ferR
<br />
<br />in the Snn l.\IfR Vnllcy
<br />
<br />P. A. Emery nnd A. J, Boettcher report thRt 60,000 feet of r,eophysic.11 log,,;n;:
<br />
<br />in 70 holes in the San Luis Vnlley ha. delineated a clay series ranging in thickness
<br />
<br />from 5 to 20 feet that acts as sn aquiclllrle snd hence as the boundary between the
<br />
<br />water tsble and artesian aquifers. These series of clay occur from 30 to 150 feet
<br />
<br />below the land surface over sn area of spproximately 2,500 square miles.
<br />
<br />Status of rCflort contfiininit this firldinr. or conclusion {clll'ck IInd;
<br />Published or scheduled Cor publicrltlon III Uli~~ 1:;lIr.ndar yenr.
<br />Written or being written for short pap"" VOIIlIl1'"'; of cllrrelll Annllal Review series,
<br />(Give tentative tille and, il possible. approxillJ;lle <late of suumillil'-)
<br />
<br />~/l.,nllsc.:r;pt r~rod In Ow mill. II 50. f~iVf! currcllt st"tus or p.~lim;=f,lp.d datt~ of puhlic;llioll
<br />
<br />M;:ln!r,crl:)t in ;'(I~P;l':ll,nll.
<br />~X_I-"':Ot Y'.!: ,II :\:jl'..);( :..;1:1~~I~.
<br />
<br />Reference to report or reports containing finding or conclusion, Please place in standard Survey, style, Iniiial to
<br />certify accuracy... . . . ., . . . . . ,
<br />
<br />
<br />ir GCO-A. Annuul nuviG~. 19~3
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