A DIV ISI ON OF NEW MEXICO INS TITU T E OF MINING & TE CHNOL OGY GEOLOG IC MAP 5 I 107°37'30" CORRELATION OF MAP UNITS - •C •u l ~{ Qpy .e Qco - 0 ·:;: = Qpo :,: -~ I-----"""- ~ 8 ~ - w Om C I •u OTm 0 I I if •C •g ~' " ~ .9 • •C u . •0 • 0 .~ GJ 0 ...._____ Tgp " TERTIAAY s:._ Trf > Trt ,.___ -.._<____.. ~--,,,,,,--> - . - - ~ <.:----12 --> -':::,. .,-~ Trfi - •C T,s ,t 0 ----- w UP PER CRETACEOU S s LOWER BB CRETACEOUS LOWER G PERMIA N MID DLE 8 PENNSY LVANIAN LOWEfl G M ISSISS IPPI AN UPPER ~ DEVONIAN MIDDLE 0 SILURIAN MIDDLE Ii. UPPER G ORDOVICIAN LOWER ORDOVI CIAN b UPPER ~ CAMBRIAN ~ PJ:I ECAM BALAN DESCRIPTION e>F MAP UNITS Undifferentlaled colluvium-alluvlum- Th in talus-slope veneers and colluvlal and alluvial fil ls on arroyo valley sideslopes, in mountain can­ yons, and on piedmont slopes Younger piedmont-slope arroyo alluvium- Fills (silty to gravelly) of shallow drainages cul below older fan and erosion surfaces graded to closed basins Older piedmont-slope alluvium- Uncon­ solidated fan deposits, piedmont-valley fills, and erosion surface veneers; associated wilh sur­ faces graded to closed basins; uppermost beds often cemented with pedogenic oa.rbonale Mlmbres formalion (Ple istocene)-Piedmont­ slope facles; fan gravel and fanglomerale with interbedded sandy zones; includes thin erosion· surface veneers near mountain fronts; upper layers contain thick carbonate accumulations (callche); th ickness to 40 ft Mimbres formatlon (Pl iocene-Ple istocene)­ Similar to Om ex cept co ntains more intensely weathered boulders and th ic ker carbonate zones and is often preserved In hig her level terrace remnants than those composed of Qm Sedimentary member of Bear Springs Basalt­ lnterbedded tuffaceous sandstone end sandy conglomerates; thickness generally less than 100 ft T 22 S Undllferentlated flows and intruslY&s of Bear Springs Basalt-Dark-gray to black basaltic an­ desite (hawa ii te) and basalt; includes some ag­ glutinated scori aceous material Kneeling Nun Tuft (Oligocene)-Pale-red crystal-vitric ash·flow tuff, weathers orange brown; contains 18 to 36 percent phenocrysts of sanidine, quartz, ollgoclase, and blotlte: abun­ dant flat tened pumice fragments; thickness 80 ft Ash-flow tuff unit of Sugarlump Formation­ Grayish-pink crystal-vitric ash-flow tuff, weathers pale red; contains 18 to 33 percent phenocrysts of oligoclase, sanidine, quartz, and biolite; abundant flattened pumice fragments; thickness 70 ft Sedimentary unit Of Sugarlump Formation -lnterbedded light-colored, tuffaceous volcani­ clastic rnudstones, sandstones, and conglomer­ ates; Inc ludes a lower 12- ft-th lck vltrlc ash-f low tuff and middle 32-ft-thlck vltrlc ash•flow tuff; total thickness to 400 ft Granodlorile porphyr; (Oligocene)-Light· to medium-gray with abundant wh ite feldspar and few hOrnb lende phenocrysts in matrix of ortho­ clase, plagloclase, quartz, and minor cllno­ py roxene; stocks and slll •l ike masses Undlflerenllatecl Hows and Intrusives {Eocene) of Rubio Peak Formation-Dark-gray, greenish­ gray, and reddistl-brown basalts, basaltic andesites, andesites, and latites; ttlinly lami­ nated to dense massive, intrusive-extrusive com­ plexes; mineralogy similar to Tri Flows of Rubio Peak Formation- Dark-gray to black, basalts, basaltic andesltes, andesltes, and lat!tes; dense to vesicular; slightly por· phyritic to nonporphyritic Intrusives of Rubio Peak Formation-Light- to dark-gray and brownish basalts, basaltic andesites, andesites, and dacites; dikes, pl ugs, and smalI stocks; contain up to 50 percent phenocrysts of plagioclase, hornblende, augite, hypersthene, and biotite Tufl breccias and conglomerates of Rubio Peak Formation-Grayish-orange, light· to dark-g ray, la\us, lahar.:i , and volcaniclastic deposits; boul­ ders to 5 ft surrounded by tuffaceous material; bedding generally indistinct except in sandy and conglomeratic lenses; max imum thickness abo ut 1,000ft Starvation Draw member of Rubio Peak Formation-lnterbedded pebble to boulder con­ glomerates, red sandstones, mudstones, and shalas; clasts in lower conglomerates mostly from Precambrian, Pal eozoic, and Cretaceous rocks; mostl y volcanic rock clasts in upper beds; thickness to about 500 ft Colorado Formation-lnterbedded, gray, fossilife rous shales, thin-bedded limestones, calcarenites, an.d flinl clays; thickness to 170 ft Sar1en Sandstone-Light-gray to yellow ish-gray, medium- to massive-beddad, fine- to medium­ Qpy 23 grained sandstone; few pebble conglomeratic beds; crossbedding and ripple marks fairly com­ mon; fossili ferous, gray, shaly marls al base and 32"22'30'' calcareous sandstone at top; thickness to 300 ft R. 9 \'/. R. !J ,\' 10/"45' o .... from U.S. G~olo&1ral ~uney GNology by R. E. Clemo11, , i,1a-1m Ra tt lesnake Abo Fonnallon- lnterbedded, reddish, chert­ pebble breccias, chert-llmeslone-pebble con· o-o' Ridge 4 A' C C' glomerates, red shale, shaly limestone, and fi ne 6,0001 I 6,000 sandslone; thickness to 300 ft Fluor ite R i d t;i e o-o' Star vation Drow Sort en Magdalena Group-Basal white chert con­ QTm glomerate overlain by interbedded limestones, Q fa u It -~ Po I s ha le, and calcareous siltstones; th ickness to 180 ft Opy_,,-,C:::=::S.-2,,.._~o~m:_==!:Q~c~o;:::::::~-_,-,<::C:::::::=:::='='~:::::::, ,,,.,.. _ Qca,.-<:' Ks Tr s ----.... --....-J~ .,.. ------ --" ...__ _,-~ ;:::-/ -----------~ ~ Pa Lake Valley Formallon-Ligh t-gray to bl ack, 1_ __ Tri ----- 5,00 0 thin- to medium-bedded, foss il iferous lirrt€· 5,00dl ~:_----~~:~~;::___.".:.---=====-- - - --~.....-. _-,n _______ Ml v ( Ks stones and marls; abundant c hert lenses and -j_ ___ _ _ _______~K ~' --- - --;;K·:-:--------- _ __--- Qpy Opy knotty nodules; some shale in lower mem bers; ~c=-/-c-<Dp Tgp Trfi intensely altered except in Rattlesnake Ridge J Sf =rt Trs and small outcrop 0.3 mi northwest of Lu cky ] :--- ----- - - ----------- p ---- - ...------------------S f ~~ - I mi ne; thickness to 400 ft Ks / ------Pm --- _______- -- Om I Ks _ Ml•, _ Oe Om ---------------- __-o---p .,__-- --- ~ Oe ~~ I T gp 0 Percha Shale-Dark-g ray shale with limestone a~ I V fbm 4,ood~ l.:._ __-___-------====='=________ ==========--------- --------- ---""====---·-=====-=--_:'.Sff_J_L--- __ ~c::::::::_ _ _ _ ::_:_ __.1:::::_ i::::_ ___ _ _ ____J 4,000 nodules in upper part; only exposure is at east ft - end of Fl uorite Ridge; thickness about 200 ft 8 B' Fusselman Dolomlte-Medlum-gray , mass ive­ 6,000'- C 0 0 k e s R g e - bedded dolom ite and do lomitic li mestone; only D-0' 0 ' ex posure is at sou theast end of Fl uorlte Ri dge; - Mass acre Pe a fl partly siliclfled; complex ly faulted; thickness - Tso - about 500 ft - - - - - T Tk n - - - - - A Ts Tk\ Montoya Dok>mite- Dark-gray, medium- to ~ - -~Tk, thick-bedded, dolom ite and dolomitic limestone; - Po n y H i I Is St a r v ation Dr J w Ks -,,--- \rrt i \ --r-------------------------- --=--d---- Ts ~ abundant chert; only exposur~s are at southeast 5,000'- T es Qpy ------~ I I / Trt l s a T, end of Fl uorite Ridge; altered and fau lted; thi ck­ 9po Ks 9" I ' f PY Ks K, -........,., I Ts Qp\ Tk:~ ness about 300 ft - Tes Ks eo IPm f \ I \ Trt Tes . ,;: I ~ I \ K, \ T rs Tc, _, t5-r::::. Tel ; ' _f ~ ~ mM lv Tri \ El Paso Limeslou-Medi um-gray, medi um­ - K, Ks Ks IPm I \ / Tbs I -~ Ks Pm I - --- ~ 1Tbs T---==s THY bedded limestone and dolomitic limestone; only I Ks M ' t<· I - Tri Trt Trf i ? I I - - Po ,cm eo ~m I Ml, I <:::_ ·- - I - exposures are at southeast end of Fluorite Po DP ._:<.::,. ~ I T!~~ i ' ea ~ J,., Tri I _-::.:0,,, Trf i I I Ridge; altered and faulted; thickness about 400 - m s·f •l!lt Op"', " Dp I I ~ ·- 'I l rf i Pm' Ml, M lv- Mt\• Op --i5P Sf I ·o---~Trf i I ft M l v Ml, Pm, -1 , Sf Sf --- / \ 4,000 ' ' ' ------- Bliss Sands tone-Dark·rsddi sh·brown and greenis h-gray, thin- to thick-bedded sa ndstone; D on ly exposures are at southeast e nd of Fluorite 7,000' Ridge; lhicknass about 100 ft - Rat t i e s n o ke R id ge Precambrian- Gray and red granite, dio rl te(?), A-A' 8-8' c-c' bend amphlbollte, and feldspar-quartz-mica gneiss and schist; only exposed at southeast end of Fl uorite Ridge Tgp o' Kc 6 ,000' 6,0 00' 2 0 K~--- / Qp y QTm Locati on of sample -\ ~-~ F loo rife R i d g e analysis (table 1) \ ~ De te nt ion Do m De tention Da m ~----~ No. 2 No. I 5,000' Qpy Tes Qpy / " :,,__ Q 0 J - - -....::-~ - c:::------ -._--==:E~== = =======~Tr~ s O~p:y':=============~; ~ 1(::5cs :==::>-==~ ~~ Qpo Tgp \.- --- ' ----- Kc Ks 109° 107~ ',.. ,. TrskfJ -Ks _.,,, Tgp I - -· -- -- ' 1:-:::::::_'-.__;:_-__,,_-...:.. Kc ---------Ks ----- C --- ~=1~='T=;~::==::::::==- --- -==~;,=~"======- - - - - - -----'-~ Ks 0 ---_r__f ' ' ~1--::.:::___ - - ----------- -~ I Too• • Ks rPm ff'm San,o ~-',. ---~-------jf---- I pC ~~ Ml , MIY / I " Po Mlv ,; p £ ,oo quorque -IPm - 1,o I 4 ,oo o' ' SQ~OrtO ft - ~ ~. ' • Crno•o o,m1 n9 _\----1---- __, '·- - 10~0 10-r" 105° 103 " Geology of Massacre Peak quadrangle, Luna County, New Mexico INDEX I\IAP ·JF NC'lt' MEX ICO by Russell E, Clemons, 1982 SCALE 1: 24000 0 lmi A PPROXIMATE MEAM DECLINATION, 1980 INTRODUCTION others (1946), aIJld Russell (1947). Williams (1966) presented square mile, much of il covered by a thin veneer of oolluvium. more completely because of the extensive faulting and silicifi­ boniferous age." Studies by Kelley and Bogart (1952) , Bogart the chert conglomerate a nd six feet of overlying beds in the an updated summary of the fluorite deposi ts; McAnulty T he dominant rock at the western end of the outcrop is a carion by the intrusion of the nearby granodiorite porphyry (1953), and Jicha (1954) have shown that: I) the Gym U me~ Lake Valley Formation.