STATE O F WASHINGTON DEPARTMENT O F NATURAL RESOURCES BERT L. COLE. Commissioner of Public lands RALPH A. BESWICK , Supervisor DIVISION OF GEOLOGY AND EARTH RESOURCES VAUGHN E. LIVINGSTON, JR .. State Geologist GEOLOGIC MAP IN THE VICINITY OF THE LOWER BOGACHIEL AND HOH RIVER VALLEYS, AND THE WASHINGTON COAST By WELDON W. RAU --·-~- - ----.-.._- -. -=-· GEOLOGIC MAP GM 24 1979 For sole by Deportment of Noturol Resources. Olympio. Woshinglon Price $4.50 WASHINGTON DEPARTMENT OF NATURAL RESOURCES GEOLOGIC. MAP DIVISION OF GEOLOGY AND EARTH RESOURCES GM- 24 " " E XP LANATION Qg ( ,. ' I· o, A ll uvium Uncon,olJdarcd si/1. .and. and grnvc! Qg j " "- I . h ,r ~ ' " A l p ine glacia l drift Ou!wa,h, silr. ,and, grave l, and ti!,'(7) UNCO!lrORMITY ' Og 6 ., ' Tqy "C o Qu ill :iyute form:1tior1 1e:-~ M3ssn-e lo welf-broded si/ls!one a~d iand;tonc. ~nd conglomfraie UNCONFOHMITY " ,, Thsl Thim Thss Ths Thcs Thm Th, T~$S i Hoh rock assemblage 1-Aa<wo 1111 Thal, massi·,e !o !hin·OOclded ;i!mone Og Th!m. e~knrccus sih•wne and r:o ncretionuy /e.o&es Th,s. !bin· !O medium·bedded siimonc and sands!one of atout equal nm.:lun!S '· J Th,, mas~i.e 10 zhid,-bedded gray,.<11de .snd>ton~ The:$. c.o.,rse- 10 v~ry mH<l!-gt.1' n~rl graywscke .inodaone. grit. and can11.lom~rn!f ·!' ., Thm. mrJnae~ rock.I nr intensely .~nc.,rtd c/jyswne and silrstom:. conl sininz blocks of .,. indura•cd si!lstan c. gray1racke sano·swne. anC s/tered 1·o/rnnic rocks ,o n , 8 '/ hv. vo!c:mic rocks undifferenli3Jed. inc/~rJinz very large bJocb LYilhin melange rock$ ' - ~· L' \ Contact, approximately located • \'7 '" Qg Dw;hcd where gfi1dJlional; dotted where concea led; queried wh~rc unkn°"n or \ probable ' ·~ ' ' ~ ----- ------·-? ' '· ' ' '" Faull ' I Dasht:d where in /erred; Gotie.1 where concea/eC; qu~ried where questiomble;· arrows " indicJ1c apparent o'irecrion of morioa ------._ ...L. __ ....t..... _____ _ _,_ •• -· · - Thrust foult LJashcd where ,1ppm11,marc,JI loca led; dmled wh~re rnncea /00; quer,~d whi,re ..,, unce,r.qm Sawrulh o~ uppar plate Anticline 1'howmg trnee of ax fa,' p/,1 ne a nrl dircc/ron o,' plunge: do!led where CJJncer, led; d.osherl ..I •,-,'~ Ug and queried wilere uncertain Tho 5 0 Syncline Showing tr~ce of ~xfai plan• and direction of plunge: doued wh ere concealed; da,hffi and qucr.'ed where ~ncertain r . Fold UmJil!crc 1Jli;,.f~d sy,,c/in;,.I or a11tic/iaa/ suucwr~s arc reftrred to as fo!ds •/ I· -' ·- Qg • Inclined Vcnical Horizontal " Strike and diP. of beds, &,// on indmed syml,(!I indicates top direction known; 90 on 1·cr1ic,1I symbol indicate., !Dp dirccuon ,,. ,. I,~. R '"' 13ase rnop by U.6 . Gcol0gl~ol Sur.et, 1950 ~nd 1957 Goology by Weldon 'N. Rau. 1974 - 1g7s ,d' i 'f' l W F 'f Fl J:."'t....f""""". ' =====~i' ,.,u~ §' aoao,.........cr' , ,... o "':'o .....,, so~ = ""°S"'---·•'',=~--r''''~" ""'"·--~··~\000 ,••. Strike of beds from aerial photographs /ff' ~==""-===="'=====''====='====="'====-'' m0>.£TCM i CONTOUR INlFAVAl lO FFFT - < 0'1U,1 ,s r.1EA~ SCA LEVEL /,,;p LGC~'1GN INTRODUCTION 'I t :;nar,,re '""'"' ""'"'"'" cno •op,Qm,oro , ,,e o1 "'"' H.,, '"'""' ! roe """' Raoge cl noo is Aooms,na:oly fi ' "'" APP<'Cl<l<.l>TE '"'Htl farl) comribu1ions to geology or th~ mapJ,W a, ~a b)' Arnold {!906), Reagan 00:CLtl•ATIO~, 1051 f 101 (1909), Arnold and Hann ibal (!913), Lupton (19 14), and Weaver (1916) are primarily of a reconnaissance nature and confined to the coast a nd majo, ri·,e, valleys Microfossil collecting locality Glover ( l 945) colleclerl much do,tai lerl grologic d•n a along tlr cos st and a:;1em hlcd a series of unpuolisllcd coastal geologic maP5. Jn 1937, Weaver revised some of ll!s origmal work. Ro:.:ent wntribution! include a ,umma,y of the: gc:ology and mineral re ooarces along the coast by Weissenhorn and Snavely ( I %8); ar.d se·,eral studies by Stewart {1~70, 1'171. 1974) on petrology, metarr,orphism, and ;tructural relations, including a regional geologic :mp of the west·centra! part of th~ Olympic Peninsul.'.J.. DRY CREEK FOLD M44 15. 210J8 Other ,dated studies in adjacent areas tht arc important to concept, employed in the SCOTT CREEK MAXFIELD CREEK present report and map are by th following: Tabor (1975) on ihe geology of the U.S. Gc:ulugical Survey, 111<u::rufu:;sil colh:c ling localiLy Olymric Nn1 ,ona l !'ark; Cady ( 1975) dealing with the 1ec1on,c sett mg of the Olympic MELANGE ZONE ~ Penimula: Sn~vely, Pe-Jr), and Lznd~r (1977) who summarize offshore geok>gy and oil 0 ' and gas p,,ten!ia!; Macleod, Tiffin, Snavely, and Currie ( 1977) on geologic f:REEK interprcta1lons of gcoph}'sica l a nomsl1es in the Strait of foan d~ Fuea; and Tabor STRUCTU RAL ~n ~ C.1rly ( 19nn a nrl l97Rh} whn pre,;en1 n cnmpil ~t ,nn nr known gf'i'l lc,ey l"lf t~e BLOCK 1000' Olympic Peninsula and an interpreta;ion of structure in the Olympic Moun1ains. The ,~, po present 1nap is the 1e.ult of a continuation of geologic mapping and relat~d ~tudies SEti LEVEL lllreadycompleted in the adp,;enl arell to the ,outh (Rau. 1970, 1973. 197S; Rau and "' . ,, woo Gmcock, 1974). ... The cooperation and councsles c~tended to the a1nt.or during the course of field 2000· jnvc1tigations b} n1en1bers of Lhc Natiomil Pa,k Screicc, Olympic NMional Park, and Petroleum test wells the Olympie ar~a ofiic,, of the Washington Stat• Depsrlment of Namral Resources l. Mordcllo L. Vince nt et al O lympic No. I. are gratefully acl:nowledged. Thank, are also extended to many indivirluo ls <"If 11,~ NW\.SW\'l ~i:<:. 9. T. 28 N., R. 14 W., 1932; T.D. 2,940 (2,698?) fL. various communl1ies of th: area for their generous ~ssistancc. Technical dis·;ussio~s wi th Parl<c D. Snndy. Jr .. :uvc been most helpfu l. The able field ,mistance of John 2. E.stern Pct,ol eum Co. So!educk No. I 13. Hall, Jen W. Lindberg, and Jack J. fa~sons is gratefully ackn owledged. 660 fl. from S. line. MU ft from W. line. sec. 14. r. 2& N .• R. 14 W.: 1973: T.D. 1,050 ft. 3. Sol Due Oil Co. Bogach,el HOH-GOODMAN MOSQUITO Cll.ffK MINTER SYNCLINE ANDCRSON CREEK l.]20 ft. from N . li ne IJ2 fl. from E. line. sec. 12. T. 28 N .. R. 14 W.: 1924; T.D. GE.NERA.L STATEMENT :i .!25 fl. MELANGE ZONE~ ANTICLINE FOLD 4. St. Helens Oil Co. Godfred~on No. 1 The primary purpose of this repo,t and map i; to show the d;stribut,on of Tertiary S E\<NWl(o sec. 35. T. 28 N .. R. l'i W.: 19'.55: T.D. 1.005 fL rock UTiils in as much detail as po;sibl e. as well as to locate ttie major structures and B ~R' fau lt s withi~ these ,oc:ks. fo1e 0 pr~rn1ium uf these onshore dma ,uc f unhe, intended to ' *' La Push Oil Co. La Push Approx. NV, coir.ct ;<c. 2. T. 27 N ., R. 15 W.; I gg9 or !902; T.D. approx. 60D ft contribute toward a bctte, unde~(anding of the o·,crall tectonic framework of 1000' . .., Tertiary ro;:ks of the Washington coo.it and the adjacent continental shelf, Most faults °", 6. Jefferson Oil Co. Hoh Head No. I shown arc con~eptnal ~ni:! either separ3te ~l:>ruptly rlilfering snu,:,t11r~l trends nr arc SEA LEVEL ·r~,i • The; • SE!.SW\'4SE\1 s.:~. 12, T. 26 N .• R. 14 W., 1913, 1914; T.D, 901 ft . neces:ary to explain rock type distribution or strucrnra l pancrns. Ir.tense shearin~ l1as Th m .,,. "%' Tl1a • 1000· pro,ided a cdterion for the prcci.., placement of ~Orne fau lt,. / . Jefferson Oil Co.; Swasli k:t Oil Co. Hoh Head No. 1 Bem use bed re-ck in mllny large a,eos is masked by thick deposits of drift, Tertiary 2000· SE'..SW\!iSE~ s~c. 12, T. 26 N., R. !4 W.: 1914. 1919: T.D. 9S6 ft; l,llO fl. rocks are shown (Inly where they actually crap out or are l<.nown to l>e only thinly ~- Lcs!ie Petroleum Co.; Hoh River Oil and Gas D~vclopmcnt Co. with Gcn~ral covemJ. Structural interpretations arc necessarily limited and the cxie m of each P~Lwlcum Co. Sim, No. I; Gil key No. l Te rtiary unit has nm lxen fully determined in drift-covcr,:d areas. All areas uc soil Ce nter SE':lNWS<SE~ sec. 12 T. 26 N .. R. 14 W.: l 91 J; T.D. 2.069 ft.: 2. 155 fl. covored ar.d he3,•1ily vegetat~d. Outcrops 3re p,imaril}' ccnfined to th~ seacoast, major CrnE<. Mel.On A - A' Movonen! on Goodmon Crnk F•ul1 (T- tO"Nl<<I , A- awa1 I rover v.1lle% ~nd their trihi,l~r,e.i. rn~ilc111.<. nml s/\mt ridge rnp~. 9. Hoh ll. i·,cr Oil and Ga, Dcvel ,) pmont Co. Gilkey No. 2 Tertiary ro;:ks are represe nted bl" two majo; un its-the intMSely folded and Ce nter SE!i<NW'.t.SP'- sec. 12, T. 26 N., R 14 W.; 1933; T.D. 866 ft. faulted pre-late Miocene Hoh rock asocmblagc, ~nd limited ou1crops of tl1e JO.