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Home My WebLink About162-032_BLM_2 GEOLOGIC REPOR'f PROPOSED SLIDE MOUNTAIN UNIT Copper River Basin, Alaska by Aledo Oil Company, Inc. ¡~in"l'Ù Clal!iJ'$.it¡~ti(!n B~·.u¡eb 50'" CoW'dGv.. 411J1I:iC1'4glit " J~~ 2'1" 1;ji4 ¥t",,¡;uo:r,,¡uwWII 1'(1): 3.1'anehof Oil ~~ ~ f~: CoolQgbt:. S%'<lucn of ¡'¡:iI:,¡e1"al C:La¡,¡~¡.fieQd"Jji Subj~~: PröPQ~~ $11~~ ijo~~tain Rlv~t:' U~!'ilr.i/¡ £'01" 1ì«i'~l,!~1:.1on of tÌ1ltll SUø@ ()f 'ttll$t It! '1C1:t' Sur'¡j\j:'rvisor'$ J<lf.U11'jI' :U. tb. Ue~o Slide ~:o,Wi'l:~b !]Ellt: ""ill e!flclDM an ..r>,u¡t of Heii 11'1 the '1'1»)1.301;1.. Con.t:N!I:!:;4;; it~ of' tbli.l EUJ'UKa Unit .n~/õ.. 1'!!.$ telilt weU líJiU 1>ft ~!,,\t 7.000 f~Elt Of!' t~e tiff thlll T<¡lkell'tn~ Ii'Q.NM- 'ttm .u it 1oeat.!ol\'! ~",¡)" iad\Uiion of. l'Clp~r't llod att¡,¡ct...,<1 eJd¡¡iÞit~ IiflJ:'rf,," g!101ogy,, anó ... R~f~~~ce 1$ ~~d~ to tb~ ~Qunt~in Uni~ ~~d Ali:l$'k..··. fU~.;i in tI.~ (j,U COfif)<my. 'rhe 71ì..02/i1.40 iåe~ WNf>'.I'ß tile êe.St: dr Uled to.. 't ion if ~t: lòitoaeJl' t'Xbiblt n!", a l,¡w(! ap ifli'¡¡¡!'!'~ f.:xhi~;tt "iJ" ~ a $t~lng P4$pe~tivcly ~'ÍI'nel'...li¡¡:'tod cn.'Oi1U¡ iiI,¡¡ction. r ~ær,ElNl Th~ ~¡Hde; l1000tain Un! t li·lìJ~ in the Iì()'ut.ì:m~$t Cop~~fn' ¡¡¡,¡rt"ly ¡SGl1>ile;¡¡ by N~d from J~nchQt'4ge. "¡'he 12 ¡¡¡il6è$ noMl1~ut of th<!! A1Jltdo ture~ }¡;:>. :f well 41..t...nee $GI\j;thw1lì~n: fl'0¡¡¡ t!'1a íJnion Oil Ta2.lins flO. 1 iU.v~'.I' ii1dn well dte &nd abQut well (P~A). iJWut tr,Hf ;¡¡;;¡j!!!e 1be 1:':q>1'E!I!'í{ivQX> Bash i¡¡¡ a boJ.$1n .covered syrfic.ial u.neOß$olidóíte4 d,ct.\OOi'ts Qf Qu;¡1an:'fI....X"'$ i¡¡4it.. It 1~ £:'ou,.á «I) W'lti$'t ,i;¡~, tá. TalJ¡¡t>$twl GW"",t..ift,$,, GII¡ tho ntiff''tb 1:1,.. ,U""ø.¡:" OJ< f;h~ 0<11$1: tb~ "¥'dng.,,'U ¡¡Joun-t.,iJ}!I ~md or¡; tb/i;1 by the !>fount...bu~. 'Ï'.aleo¡,¡,1:ìi'.ø ¡¡.I>d !iet>o:¡øic:. _4~ in !!<al1}" i>lacea fO¥'èWi Þotn tl;;e l'.Iot"th <ltld .*outh þQundaF'tø.6 of dUi) 11aliin. The rJ1'<liJ.'4ti!lll ~""''tid1'it$ eQu:!õistof Terti..!:'y óìnd Q..atlir~ volcat3ic ,"'och wM,¢h ~t uneQnføJ"~ly ~ft;l~1:Î oldev 1iIt:l'iìlta. Tba Tiil.llit~f.tnA JIoaI'.l:t<fliiu$ comi\l¡¡¡t of !)arl, iatP'\u.1v<ll1> ¡¡¡¡¡¡ð ~¡¡¡¡t¡t'u.$ilivfl _uk»" ~~iI."OC1.cu'tic $ndb¡¡~t$ a~d uJ"l1'1. sfliÌi1l'i¡.~:t~ of ~.$~~.ie ~~~. 11'1 &dditiør. to t~6 VfIIP.0l't r~f~:Ntne~ is m¡¡¡d... 'to tb., r.~.(}M$ of ttj~ tJ.5. ('"eo1oSical $w:'Ve.;9' t:b4t ¡,we 4v4U,¡¡:!>J¡e for Rivø.r 6ö$in. s~~ a~l@ct~ð rßfe~Ðce~ ar~t 2. J.. Gr.mt,:¡¡. A. l!hil, G!101~)g1ø ~.~ of AnctvÞ~Ii>t{;~ ¡¡¡"'l <}\Wát'ã~.tfll; i).a. G&ol. SUi1'V~W ~1~p I....j...S. 2. 19iO. ~~ß6~~li~4d U~IìI),;a,1 :¡¡'bowiug i'¡¡}ØQU$ l'OCJ;;,¡. <Ut~ !hlJ;'VfllY !;iôlþ };....3,U. l1IikP ofl;ha 1~.ùQhin<1l ~¡;.~ t ¡.,..u.1:I;!H I).S" lÏIeoJ." I. 1960. G~o¡oiiç \!ì~p Qf the 4tM &..1 qu&dt!'allt,¡:lllui., Ala~kßt U.$. ~ol. JI..J ~. Andx~~~en, G. t. Gr~nt.. A. and ¡.. li~O. iP't41rj?1"flt",d.Qn fl!iJ;i¡;¡~dç. in tÍ!l~ COþplJi'f" RiveJ" tl"i. íM¡ol. f;ur1i'~~ o¡:~I!.n fUe 'J:'(i:lort. Ala¡¡¡k~u A.. 3nd JQ~$. D. L., J"",r¡'':k\\tlon, liIouthç,¡,.I)'tr..l ~HìO..ß. J~'t. ,U(¡!. $. Prof" ~. Millor. D. J.. P",yne. T. G.t Vt<tvolt~m G., O..S. of E¡m;...·.ay Bull. '1 " !¡¡Ù,.¡)l}{, R. w. ancl Cret~ç~oua of ~~.. vol. G5, p. 2~3. .1r.... .1. Correl~tion of tñ~ Gool. $oc. 11111. iI. l1offit. }'. H.. ¡¡¡¡HI, .~r.;¡¡'I'¡¡', IU,¡¡:¡ka: \J.$. ~~"'()¡. of th~ Ç~d,ti~¡.j\ Valley &1'111 ì:luU. ¡¡.,4. !lNdou:;: Htc!llil The Al_do OU COI!Iµany ddUed a h$t well. fio. 1 b~ Ootpbet' 1~S3 in ¡$C. 9. T. 21 N., R. 12 ~.. S.M. Th. well wa~ ~!ll~d tQ T.P. I in the 11at;¡¡nt'¡filkt,) r'Qrma.Uon of L~t¢t CI';tt..c..øUG iili!§I iIU~d W"l/i ûetob6r 1957. 1ñe $ame company in üove~Þ~~ 1962 drill$d t~~ w~ll tu~ka Ho. 2 in &6C. 18, T. 2 M.. R. 10 w.. C.~.M. Th~ w~ll W~$ $t~rt~ó in t~Ð ~~tª~u~k~ ro~ti~n end p~n~trat~d p~QÇla$ti~ B.dim~nta ~t 5.200' and hottøm$d in tnc Talkeet»ð vo2canic at T.D. 8,546'. fbe w~11 was ~b~nd~~~d Ap'J:'H 5, 1\163. 7h" Union Oil cl~nl~d th.. wdl '1'i!i!&lir~ ~íQ. 1 iM July l!feZ i¡:¡, ..tie. 10, T. I; r:. [iC. 7 \;1.. C.R.!!. 'l"h~ udl Wè1¡¡¡ ¡¡¡t&J>t:~d in th~ ~~tQuu~k~ rO'J:'~~tiG~ ~nd ~t r.D. e,aS?' in ~.dim~~t3 of tal~Y Cr(¡'¡t,;¡.çecu¡¡¡ or 1<.tt<;¡ Jur..ui;¡¡. ~Sl$l. 'ìh~ \1$11. Wi!iI$ b,¡, 19ïi2. 'J:h$ j>¡¡m. A)IrJi'ic,¡¡n P$tr.<ol..U!I1 &>111" t¡¡¡ii\t wd1 No. 1 in !<.i!I'N:Ì! 14. 19i:¡: in $1\11;1. Zi. '1'" 4 lZ.. R. \ì., C.R.t!" ¡¡tar1:ed in $!>I.I~U¡~nt$ of 1!1,trt;b~ ~nd bQttO¡¡;@~ ~t 'f.I). 1.$t$~' '\1Ci11ci1P;l·c roekec of 1W$db.l1l> <t.g:e. 3. !)'t~~~1:ig~~rJ-b¡r 'i'be /i¡¡.tðlU¡¡¡æ;f;;ii ¡¡~œJfi!d!ne and. Ii1 ~~ !ì¡,¡du am ..1 ~ß~:i;.o1(t m'l4 c.m(;~o!ç ªgg¡;;,¡. l'Qeks t~ ~1:~!>t~d ",m to ~dn~ f~ ~be Þ~s~~~nt C~)~X Q~ T~lK~~t.~~ Po~~tion Qf Jur~ißic to tbG J1~"!.!I~in~ l\étdiUiilQ't1l! o£ I;:¡;¡rly T$~iill'Y ~ie. ~. ¡;¡tMtlgX"~plt1F ttl. Ì>~.t~ ,hi ~l.atiVt~ly I.mÌ!:nQ;4f\ _ ~t i~f.øm.at1~ b 4~r1V'~d ft'Qj1¡ tb~ out<;:rq¡¡1.tnf¡; ~k$ .in 'the s\W~(ing Jt'<f,n~ttlh HQW<.tV'e1' N~r.·t ~t'! U..l.~¡ in 'tbf# ¡\H'1'\.i'tltwMte~ peJ't (¡f tb;¡¡¡Ì!lìa¡¡¡!n bôlc" ¡¡¡ON <1Mt~l tbl'.ll'~ pNY!QU:;:¡ly ..v.a:t~lø. TtulI 1I!Q~\æ J:'Q~~I>~tiII tb..tñ!cb,Ij\\#i¡¡; of f'Q%'!41i!Ition 1n th'i$ t~d$:.ißü i!i1l'ôl4 Qt! thll! WfiìSt d. of tbél .bu1r.1. N.¡¡lchln@, f!N.II: M.;,¡aQZo!... C~t¡¡aa¡;¡us M..t~u.¡kð f¢;t'tt.atic,n ¡\GCí;;!I, .of' A1z¡,i. 01'1 ""¿<$ ¥ðl~bina r~rm~ticn J1,WiI1ud.c ji¡¡¡k,'lj:; f¢:t'¡¡¡¡;¡.t!¡;¡.n (;¡,¡;bh:,H~ T;.¡~"<'.ni ¡'oX'!!'.,u:iœ 1a~~e~tn~ rQrmæt!Q~ 10 C..l2SŽ ¡)-40(\! .l!4rou6ßElde di'tt<1ì $U¡U~~$1;. th,¡¡t: ~ tnie)( J'J~a$d(t volc¡¡¡,~ll: rO<.1k$ t.m~ltrlie tM ~$"t-'l'n :..l~ ():f! th{)< <It tb1(í!ç (i!~qe,~."~ Qt' ~1.ôQ'JtQi<: ¡¡,ul1~l!!tì$. tm'~'ldJ.~ th!;l c.Q't~i!il ~.;; ..It'iit,.,m ¡>;J!.l'i't. diltt4 ~'';dn!lll.'l. frr,;~ w~U drilled it: tÌ1l:<t"1f~t\ilm t:!i1Il't Indicliilte <ì!ÞO¡¡t S.4if~ Fe.t f!Rf ~i!U:'intc an~ non"m<U"inl1i Jj1:ra:t¡, of tluJ MllItanu,$ka roml1iti~n !Ii:lt'$ j),N¡¡¡-.ut it; tb/¡l tt~do tlJ:'r!1!t;:~ ),ló. :2 10/·\1111 if.¡ aGe. ¡$. ". 2 !>t.. R. :to W.. C.Íì.M. ",.,fit of th(# un! t ¡¡U;'<!lt. .II' tb~ !Jr~iQÐ T,,~lin·¡¡¡ !!/'c. 1 w'illl in SCII/C. 111, T. It N.. "1 i. 1;'0<11 miu'laf! $'tr.;¡¡:t~ of' 1:1':1._ l<!a.t,¡mu...k6, f'o~1~t:ion W4S p~~etr4t~~ to ~ d~pth ~f 7.395· ,~d f~o~ thi$ tQ ß.~39t 1.~.. thfil drUl ¡;>~MtNt~d ¡t1'at~ of !:¡Iœly C1'fiIh¢!iQU\i 01' L,n,\:* ,]UIi',!¡¡ji.¡¡¡Î!¡ It tb1ck 3Ø''lue..C~ (,;;:1: ewglomer-,atç¡ and $lIDd6t~'ì¡¡¿ is .;:""$l1/nt 1'11: 't'1:;a ~i". 2 weU wbtc¡'¡ h not PN$<IlIl't b th1lô 'í'plit'!~ well f'"lrt!'J&\'$ut. n 1$ m.¡:t; thh $$ctio"" ('j~'t tQ th~ IU!$'!:: ¡¡md i!l ¡¡¡.o CN.¡,t~i$ r.:t:I¡¡n'1/~b in tUmd;>'t~$ ì:todlll'$ 'Within th¡¡¡¡ m~"'in,, ::;b~¡e $1:1'<11:4>. 1Ì'1t! $it!/l for tb_ pl'Q~$~d "~lt will ~ð in th~ ~rcKim.i.~~ ~f $ec. 15, T. ~ N., ~. ~ w. C.í4Þ!. Clt' 1I\1d,,<:y Þ"t..~~n t¡,~ W$1J",ih !}a;1l,jí4Ì .,,~ tnii\' C't'Q~$ ¡¡¡,=~don. th~ IitW,. facie.. "bottll! be þólnetr;;ttø9. bJ!¡wßetI is .soot and ¡¡, ,O<'~O'. Tb" d",pt~¡ of '1,GOO' t>tipulat.4 WQuld l'\..t~h 1:Î'Mi ~'¡¡jfl~tj,ve to bill t!1ìst~d. In tfi. i!JOO" Cre.); weU ò'{'illiid in (!!'i/lC.. 29, T. 4 *.. R. 3 ii., c.~.M'.. tn. CQ1UitiU 1$ $imil;av to that .nfWn:¡:.rt~3Ntd in tÌ'l:~ E~~ÑilI\ Ii:;;. 2 wdl with th... flK(¡4Ipti Qn of ji gOQd rahow ",f! I';.GtI'U\U1It ~¡¡;$ in ß (i;<m~ f,aeil1llj¡ I1$t iJlbØ14t 5 .&oe I. Ii. Tbh inttu"·",¡¡l 04C\Wi\1 $þ~ tn!\\\ f,¡¡~l$<J. It.u by t}.11I 0P<'U'Q,tora th,¡¡,1: t110 O'l' òM.i.l:}.W$J·{1. ¡ø4t;;llat; tneN b í;ìØ$$ibHhy fit' ef.t~?~~t of Uu!(\$ in 'tile otf$bQre f<il4iltlfi øftñ<t!>,¡¡ CO¡¡¡¡:m1ll elMti~. Thh h .. an~ the tel¥1: w;LU ha". a lltl<1teuT. oÌ)1e~dvø. fl'QIj av,¡cil@l<t ¡1,¡t.¡¡ U; tbat 'the tOÆi! of ttv¡¡¡ 'r..lkee,tn<i fo~tioo ..t tid"j¡ dte miljI' flot ¡¡I(<I..d dOj:<tb in _itUG%' of tbe pruviO¡a1i 1l<I<t.l.1$ drUl!1d. ¡¡ ~.cood cou.ld b~ tlw ¡iiill<:bbo'!l rQ.~dQi Iil'Jdeh wu ene.øuntj]'Nd in tt.ø ...¡¡lI. pt'Qvi4in~ tb.t tni'! "fi:lJ.!<eelìì't:n¡¡¡, v",le_tolià <I:Æ not \itll:e0\4')tl\t~¢. A X'IiIt'JN'lottor, $¡¡¡åll'l1.c. 11;11.. $h~ _<'II1IIt lilt' t!:¡\1I ar.d if¡ tl:1l\! Sa~n <l:t'ft<1 lihow!il\d .. M~ vdocit)' l.¡¡y.t:t!' 1;(11 ~ tba b<ò$ø¡¡"nt .at: d.~th. 'ntb e~aN$ f~.,.o..,¡¡¡þlj' "ith t:b~dlli.t"l en tÌ1\!1 lk!:~t!1 to vol!¡;.,!e¡¡¡ d)t<dnI!4 f'~ tñ. c>1Juu' wjjlll1ii. ~;¡t:.nt~tU,r$ TM øu't;(::~pil'l~ ~øk$ 11~ tb>!! ~f,I=tain~ ahow V¡¡¡:!i'!t;;U$ "wil';¡~¡¡¡ of ~fGl:',w";tiQM. au~ J1!.¡;;'¡¡ 11'..:11 t~l:ì($ of f[!U~~~ f'lults fold ~~$ b t:QW;Q~. tilJ.¡,¡ c(}:l$id~:Ii'~doo. G)¡o~u 111I !d3 1Iìilip W I'Ìltl¢!\!t1ß, ~i$ 1!ihows t\ìJ.1;M b'l th.1$ T...lk",otna ~UÐtçÚt.î!'l !;.Q '¢j¡iII ¡;¡U. t(~t~ll1 Unlt.tþ.~ f~IJ1t$ IIlN ~~.n&itd the CQ.ppeX' ti \/'fU' J;\~in Mdl.<l \\i!llblilic liíu4: ~~~ne'l:~tel' datI).. $Uœ Møœt,¡¡;!n h WIId'lirlçÚ¡¡ lii~t¡¡¡;nU$kil f'O£'I,¡.¡¡tiW omd tblil etl'.t<'1 sbQI>' sti\(tPIl1_ f'~ ¡¡¡",biiJie Gat'" f,boto int(lr¡H'eu'tioof$ ;a f'a¡,¡lt@!i ~l'ltieJjnl!jt 1iIh;t1Zb tlite \¡Qutblll'Øl P4ilt't éi:vPO¡¡H tc ÞIi o"l'tum¡¡;;1. of tbb z¡tru~tl.1\~ b~ uot ..h~ in tl1e Vf¡¡f"} ;\¡;~~r~li ~e<! Q\1"œ.¡¡¡ JíI<\Ilcdou. 4i w3.11 loe..d~ is ¡;I~¡;~1i MO$.d 00 tb.., flOi:;'tbørn pa~ Qf ttt~ ii't;t'I;I...rt:ur.e W~ht:t'ft tne d<ili'OiW~" tien ì$ .ap¡iaNIlnJ., not S$ btó!í~$i$. As. ..1:41:..(1 \'liMy taultli <U11I e.!litenood ;£'l'01I> tnlil T,;¡¡J.k&~tn~ NOj,mtiÙu:!I an4 $ebmic t1atl!l from tb", .tl~\?;a un~%" Slide MQW'\tain. 'i'ìd.iI ~i:O ):ita bltffl'l)j~ly fol\1 atr:>uctuN or iii fault Qf $1'>11",t ¡¡;~~n11:u_ ..}ed,ell hliU:> brought l1P tl:l<1 '/.'Q,lkóJfírtn·iì veJ.,<.lImie¡,¡. fNm thl\! d$t~ ò!u.dy~d. th~r$ hi :10 c<melu$Ìw. wiÜet,j it MY bEt. Dw to th~ dUI$j:1f.ng of tìll1l i"Qcks <ilNW'\d Slid. ~o;,mt~b. aceuNtlil l$arf'l<:.1Ji.1oh~~l>V;¡¡tiœ$ oil" ,UUicl4lt to cÞtain. Thfl:t'e b no to dGtOJ'l1!J.Ji. ttulI ~)i¢tt¡)tìt of .. 11:10$..4: $truC't1iiN. ø)"adley of thJ~ 011 COJr'l'any $hte,lt 1:h~t: iì 1iI'IIi¡;¡¡¡io: lJ.nlíl dQWi\ tflliii whhh C~3~1I th.e .aNA indie¡¡te/ll .. f<iult on 1:14.. south ..a~ of tñi& ztru(t~. ~"'\ii@"If1\¥'. 1t is N¡¡u¡œ~lil 1:ø €ii:tlIiWlIOl: Sll.dft, munta:ln tQ i.eo ¡¡ lal"¡¡¡;<a omtiølín<ll "rl:ru¡¡::tuN whleh conft'Ont.$ th~ f.au1:1; 111 the "Wtlntainl>. 81r«':\1I tl'¡¡¡¡¡ 1:JfiI;¡¡t !.e for i\ Um1ud Qhjeetive t:Ì>e ~t{inu$k.a rov¡¡¡¡;¡tion _ð <::tZ!ntrol b avail.. abJA tnlil þNviQU$ \1#.,,11$. tìt. te~1; Q_ j;x¡, tI !$'I.I.Q.<»:#$ful <mill. !>. coveN i.Nð óU;1" th~ '1'~~ >m1t .uN" (¡()n$c1.ût$ of 7Q.i1U.iW (I~$ IoIhl~ t~ ~\Ant4Ln M(l~h It J.3 ~Nfç'n;,¡¡ n'u¡~~~4 .nQ~;¡d in .-;~Ud þ.Lf¡eÞ¡ en tb" lG<1 fj¡ß~. tilltli.f,Þj, 1; tl'j,u ~ 5U dill ~'t«in Qa1 t Sil..... It b t\¡1'i't;n\U' l'$(}Q1III!.;íIn:~..t tb,¡¡¡t tb$ to d1'1U s¡¡¡jd 1<;$11 t(l Ii< -ì-t,¡ of 1.0ßG' ç,;¡¡, tti"¡" top ~f 't1J.k:f#",tn.. vol(l<J\~ies ¡,¡Ì>!çh cEWve:¡¡> eO!l!ól1!l fi:rIGt. b~ <i!ç~pt\l!d.. 'ft.\\! t4$1: 1$ ,.. liíì'íttf!l<i ø t....t tQ <\. ¡¡¡..Ii f..çioli in tb(l\ ktÞW$Iot.. 'o1:'!iÌiliìtio~. ¡¡..~ IfI4Y~t'íiNe. t<\.'l t~ fer ~çuwlatiOA of oil 1m4 11\&$. \ó..nek A. Áll!! "",¡¡U:!¡i\\ l' O¡ti iir" (;løs. Qri¡. ¡ 2 (1;(:: co: Cbijj¡f. Mineral Classification Branch 509 Cordova Bldg. Anchorage. Alaska January 7. 1964 Me!llOrandum 'for Regional Supervisor, Bran<:h of Oil and Gas Oper<.ltion.s From: Regional Geologist. Branch of ~!ineral Classification Subject: Slide Mountain Unit area The subject unit agreement has been reviewed and is being returned to you. The geologic report in particular does not contain sufficient information to support the application. Information specifically requested is: 1. A geologic map with surface geology snown and measured attitudes of rocks. 2. A cross section depicting structure a.nd thieknass of ¡¡:trata . (general) to. be encountered. 3. More detailed discussion of stratigraphy and structure of unit area. 4. The interpretation of the magnetic: anomaly ßlS a high based on (l) bux:oied topographic surface (2) anticline (3) upthro;m huH block. 5. Depth to Talkeetna Format ion based on the well¡¡ drilled in or ëldjac~mt to the area.. 6. Discussion of strati¡::raphy in the wens cited. 7. Some informat.ion on seismic line mentioned across area. 8. Show protraction grid or survey township grid on geologic map, 9. Probable location of well ¡¡ite. 10. Some references to published geolo.gy in the a1"!1a. Al~nder A. Wanek ce: Waring Bradley t>'"-~- " "'" " . ') -. e GE OL OGIC RE POR T 00 rn @ ~ n- ~l1r? Ull~U\ili¿ -::.J L'::J U ,--_1 JAN 21 1964 rID PROPOSED SLIDE MOUNTAIN UNIT Conservation Division U. S. GEOLOGICAL SURVEY Anchorage, Alaska - < Attached hereto and by reference made a part hereof are: (1) a location map, Exhibit "A", (2) a geologic map based on photo inter- pretation and magnetic interpretation of the Slide Mountain structure as Exhibit "C", (3) a map of the surface geology and measured dip and strike and location of the seismic line across the south end of the prospect as Exhibit "E", and (4) a cross section from the Aledo #2 Eureka through the Slide Mountain area to the Union #1 Tazlina showing the regional structure and stratigraphy as Exhibit "F". The Slide Mountain structure is a heavily faulted anticline e of considerable magnitude. Lack of continuous surface outcrops make it impossible to estimate the closure by surface or photo interpretive methods. One seismic line has been shot along the Glenn Highway across the south end of the Slide Mountain anticline. This indicates a near vertical fault of considerable magnitude at the point where the line crosses the Little Nelchina River. From this point on to See 1, T 2 N, R 9 W, CRM there is 3,000' of east dip along the seismic line. Beds along this line are dipping southeast rather steeply. The dip is probably caused in part by the ENE-WSW fault shown on Exhibit "c" as roughly paralleling the Glenn Highway seismic line. Photo interpreta- tion and topography bear out that this is a down-to-the-south fault. The north-south axis of the structure is a combination of faulting and folding. At the south end of the Slide Mountain anticline e it is a fault passing just west of the Glenn Highway bridge over the - 1 - e Little Nelchina River, at which point it appears to be a normal fault down to the west. About 2 miles to the north of this point the fault zone swings to the northeast and evidence of over thrusting to the northwest was found by photo interpretation. Slightly north of the center of the structure the crest swings to the NNW and becomes a normal fold plunging to the north. Left lateral displacement on the north-south fault zone as well as downthrow to the west could explain the pattern of faulting and folding. Only drilling can reveal the correct interpretation of the Slide Mountain anticline. Tbe outline of the magnetic anomaly is based on the USGS Map GP 156, "Aeromagnetic Map of the Copper River Basin, Alaska," by Andreasen et ale No firm interpretation of the magnetic data is pos- sible, but it appears to be consistent with the interpretation of Slide Mountain as a northward plunging anticline cut off on the southeast by heavy faulting and with lesser faulting on the west. Whether fault- ing or folding is the ~ost important can only be determined by drill- ing, but structure certainly seems to be present rather than buried topography. The outcrop pattern as shown on Exh1bi t "E" is detemined by topography and has structural significance only in so far as structure controls topography. Most of the surface of the proposed Slide Moun- tain Unit is covered by Quaternary alluvium and glacial outwash ac- cording to the "Generalized Geologic Map of the Copper River Basin" by A. Grantz, which is on open file. A roughly V-shaped area of bedrock outcrops around the south end of Slide Mountain. Tbe exposed outcrops are all Cretaceous Matanuska fomation except for two areas capped by Tertiary conglomerate of possible Eocene age. e e - 2 - e Exhibit "F" is a cross section from the Aledo Oil Co. #2 Eureka located 12 miles southwest of the center of the proposed Slide Mountain Unit to the Union #1 Tazlina located 12 miles northeast of the center of the proposed unit. The Aledo #2 Eureka located 1629' north of the southwest corner of protracted Sec 18, T 2 N, R 10 W, CRM, started in glacial drift and outwash. At 130' it entered Matanuska shale and continued in marine shale to 4084' at which pOint it entered silty marine shale. At 4433' it entered sandy and silty marine shale which continued to 4957', at which point a brown, non-marine shale was encountered. Marine and non- marine shale and graywackie was present to 5625', at which point con- glomerate and non-marine shale was entered, which continued to 8544.5', at which point metamorphosed volcanics (greenstone) were found in a core to 8546' T.D. The conglomerate was composed of igneous pebbles and the bottom 1000 feet had considerable volcanic material and some silicifi- cation with the shales being tuffaceous. Upper Cretaceous spores were found in the core a few feet above greenstone. Due to the shattered nature of the core it was impossible to tell for certain whether the tuffaceous shales were in conformable con- tact with the greenstone. It is probable that no unconformity is present as the transition from normal sediments to altered volcanics is spread out over a thousand feet. A similar situation was found in the Pan American #1 Moose Creek Unit except that the transition to altered vol- canics occurred in the Lower Cretaceous below the Nelchina Lime. The Union #1 Tazlina located 1000' north and 1500' east of the southwest corner of p~otracted Sec 10, T 4 N, R 7 W, CIM, cut an all marine section below the Tertiary. F~ 0' to 100' approximately was e e - 3 - e glacial drift and outwash. Tertiary sand, conglomerate, coal and shale was found from 100' to the top of Matanuska Shale at approximately 300'. Shale was found from 300' to 5650', where a zone of sand and sandy shale was topped, which continued to 6590'. From this point shale was found until the top of Nelchina Lime was reached at 7375'. From the base of the Nelchina Lime at 7570' to T.D. of 8838' the formation was silty and sandy shale. No reliable paleo was obtained below 6590', but the well probably bottomed in Lower Cretaceous. The cross section, Exhibit "F", indicates the basis for belief that a favorable sandy facies of the Matanuska may be present in the Slide Mountain area. Since the magnetic anomaly at Slide Mountain prob- ably reflects either the top of the Talkeetna basement or volcanic material above Talkeetna, the likelihood of Nelchina Lime being present is very slim, and if present the probability is that it would be contam- inated by volcanic material and not be a reservoir. It seems likely that the lower part of the Upper Cretaceous sand and shale section expected in the Slide Mountain area is contaminated with volcanic material and may have undergone low grade metamorphism. For this reason it is believed that a test to 7000' will explore the potential reservoirs. It is obvious that given rapid facies changes such as are present in the Slide Mountain area there are excellent chances for strati- graphic traps being present in the zone where the conglomerates of the Eureka area may grade into sands and the sands into the shales found at the Tazlina test. The published geologic data which has been used in the prepa- ration of this report consists of USGS open file "Preliminary Report on the Geology of the Nelchina Area" by Arthur Grantz,. and USGS Map GP 156, e e - 4 - e "Aeromagnetic Map of the Copper River Basin, Alaska". The Slide Mountain Unit well would probably be located in the vicinity of See 15, T 3 N, R 9 W, CRM, at which point the following stratigraphic column is expected: Maximum Stratigraphic Column, Slide Mountain (3700' elev.) 0' - 100' Pleistocene gravel 100' - 200' 200' - 4600' 4600' - 7000' 7000' - 9100' 9100' - 9450' 9450' -10,000' ~ 10,000' Tertiary conglomerate (Eocene) Matanuska shale Matanuska sand and shale Matanuska sand and shale, becoming tuffaceous and silicified with depth Nelchina lime, probably contaminated with volcanic material Lower Cretaceous shale, tuffaceous and metamorphosed Top of Talkeetna As a minimum section the top of Talkeetna may be as bigh as 8500'. The possible pay zones and their depths are as follows: 4600' - 7000' Any porous sands or conglomerates found within this interval. It is anticipated that the Unit Test Well will be drilled to 7000' unless commercial production, top of Talkeetna, or impenetrable substance be found at lesser depth. - - 5 - 1\ (' í\C OCEAN ALASKA pC ALEDO OIL CO, INC· ~ . PROPOSED SLIDE MTN. UNIT , LOCATION MAP \ I Inch = Appox. 80 Miles \ EXHI BIT IIAII \ \ \ . , \ ]] ~~ron""~ ]) / o l0LSUJlS ~ \ , . , \ JAN 21 1964 , - . / \ :' lservation Division \ ) GEOLÓGIC;\L SURVEY , \ Anchorage, Alaska , / \ , \ , / \ , , ,. / , , ~/t-......~ \ , /" ; ; ./'" A ss~; \) ;" D ~s \ 0 N A C \ , - " -- , «.,\>- S ~ \ \ \........,......../" I /""' "- \, <; '-" "\ /) '- ~G '" V ~\ '" 0«., ALASKA "- GULF OF " ~ ') C:7 L \- --""""", b BO '1 1 I . ,0 \ \\ 6( ,s ) . 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I· - - I / II II II / \\ ç \ I / / · I / ,II II I II \\ ç \, I I II II II ~\ ~ I / I I II II .ý \\ ~ I \ II II I \\ I. # . / I '¡¡If;J, II \\ - t, ~ / , II ! f .// ~I '1 / /~! I 1 ~ / / II II f ý ý ¡ ~I, .. :: // / II '/ ( , -.' I ' / I ~ ~ / / II 1/ ' I" v / / í' /I II ~ ,I ~ /// ;' /I "I I / / / ~I/ 1 ~ / I I II If ~ I:' . // / ) / I ~ // / /I /I I I ~ / I . / 11 . I // ~/~N ~ '1/ I 1\ /// T3N / I 1 /1 f' /\\ ~~~ï~ '\ I // c:) \\ ~ I / ~ \ \\ ~ ' · .:!/ ~ ~ ~ } \ \ ~ I ~ ~ ~ ~ ( Raw I = ~ 1\ ~ /1 I ~ \ \ /\ I )/ I ~'l vI \ '- 1 oY ~ ~ I .~/ \ 0 ~ "\, , I o ~ ~ ) \ ,.;;/ r °1 \ f \ ~~~ I 1 ~7 · ;;Î / ~. \\ I ~ ~ ~ / ~ Q:J0 I /;1 -,ð~ I ~ \\ / I v ~ ~ (RIOW II _" / 0/ / ~ ;:::?- _ I · I //J i ! ðO/ ~ ¡---------7:1-f¡ - ----------------T-- /~~~--~-~ I I ./ ~ I 1 . ./ I I II /./!,/ ~ I II /~ I 1 ~~ · I /I I ð ~/~ I // I ,~ // ~ ~', \ I ~ / ] Œ@Œ~~rn ~ · / I II / / / JAN 21 1964 ...::./ I \ I / C . D'" onservation IVISIon \ llr /' ./ U. S. GEOLOGICAL SURVEY \ / T 2 N Anchorage, Alaska T2N \ / \ / R9W , / , 1 .//' ALEDO OIL COMPANY INC. " I ./ "'''- I _----/ PROPOSED SLIDE MT. UNIT .......------- I COMPOSITE GEOLOGIC MAP I 1 COPPER RIVE R BASIN, ALASKA COPPER RI VE R MERIDIAN - -:;:;:::::- 1 2lnches=IMile December, 1963 ~ 1 ~ 1 I 1 Photo Inter pr etive Data 1 ~ 1 X Anticlinal Axis ~~ Possible Fou It . I R lOW / Probable Fault / Strike and Dip EXH IBIT lIell - . - . . , - R9W Raw I ----------------------4------------ T4N T4N ~ "- --- Qag ITc 1 ----- ---------------- -----------------....~--- -- -- - - ---- --------------~ I " 1 1 ./ ~ I " I I " I . 1 I . I I 100 Km '" I I I Km I T3N T3N ~ /" ~ Tc -- / I I _ 120 I Km I I RIOW I I ------ ------------------- line - I 250 - 0 ~y ]Œ@~~WŒ! Qag JAN 211964 Conservation Division .u. S. GEOLOGICAL SURVEY Anchorage, Alaska T2N T2N R9W ALEDO OIL COMPANY INC. PROPOSED SLI DE MT: UN IT SURFACE GEO LOGY FROM USGS OPEN FILE REPORTS, BY A. GRANTZ AND LOCATION OF SEISMIC LINE COPPER RIVER BASIN, ALASKA RIOW EXHIBIT liE II Scale 2 inches = I Mile . 0 _:3 :00£ " ~z;E 0 w ~~~ c +4000 N 11 + 4000 0 o..;::r¿n ¡.-- z 0 0 ~ Z . d' Surface +3000 +3000 +2000 + 2000 Top Santonian +1000 + 1000 Top Santonian Q-Sea Level Q-Sea Level -1000 -1000 Top TurOfllon -2000 -2000 Top Turonian -3000 -3000 -4000 -4000 Poss Top Nelchino Poss 8ase Ne!chino -5000 -5000 Top Of Talkeetna TO -6000 -6000 -7000 -7000 ALEDa OIL COMPANY INC. PROPOSED SLIDE MT. UNIT REGIONAL CROSS SECTION COPPER RIVER BASIN,ALASKA HORIZONTAL SCALE 1/2"~ I MILE VERTICAL SCALE I" ~ 800 FT. GREEN = Conglomerate and· nODe marine $f1Ole RED" TolkeeloO fo',"ot'Qn, ollered volconi" rn ~, Œ lID BLUE;;. MOrloe shale BLUE 8; GREEN:;:; Groywackie 'Jnd marine shole JÞ~) 211964 YELLOW:;: Sand Gild marine sDole U.$ GREY NeJchloo Lime BLUE 6 YELLOW;;. Sandy ood silty marine shale EXHIBIT IIF"