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<br />24
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<br />Sedimentology and Stratigraphy of the Palisades, lower Comanche. anl~oyO:;;~de Areas 01 the Colorado River
<br />
<br />the ('\...:....pll\'" of ,(YIJun 5. all ,tratigr;lrhll: J""l;nrlllln~ frum
<br />Arroyo (jranJ..: "<.:re ohtalned \\ llhln the maIn arTl'Y" n~'l\\I'r~
<br />S...cuon 10..:allol1, \\ en: Ji,mhUll."J ,ll....h Ih;.!! r.'pn:,..'llul1\ e
<br />samph:.. uf Ih,- ahlllg~,h"n... ;.llHI a.:r",,-...hur.' 'Iratlgr;Jphy
<br />\\>.luld b..: indlh.l.:d "":(111111 5 \\a... ..j,:....'rii'lr.:J from a \\all,'1
<br />lhe '....clmJar} arroyo nel\\"r~ thalli....... ,1,ml1'lr..'am "flh....
<br />maJor ilrwyo. '\U anlli.."IJ! If,'ndl\.'... I'T r1h "..'re Jug I"<.>r Ih"
<br />\h'r~. JII ...lrallgrJphic inlllnll<LlllHl \\;1'; llbl;'lII1eJ u...lIlg the
<br />I.',i,ling arfllYlI \\;.llb .\lier .:omrku.m ,)1'111..' \h'r". ,(raIl'
<br />grJrhic ,ccliun... \\ al' Jl,gUI,,:J \\ IIh )",1>,.... ".:JlIllellll'nllll
<br />the arroy\) 111',.r II' o.:l'lk'~':llllll. \\ \'rk ar~'a, 1)"r<.:rwJ ;1,h anJ
<br />o.:harcoal arc cumm\lf1l1l ,\rruyo (,ranJI,' 'Ir;lIlgr:lrhy. Ih" h
<br />hdlc\<.:d hI ho.: Ih..: r~',ull ofgra" lirl,', IJh~>U"I,'J III m\lr~. J~.lail
<br />hchm t. lnlc" 'Pl'1,'11k,tlly nuh:J. nk.nll11ll1lj' charl'oall11 thc
<br />,Iran graph I": \k,o.:n[111111h III li,ll0\\ dl'~" !llll rl,'f".'r III <:harn'al
<br />JI,'[1o,U, of cultural ,ignitkalk'l'l su.'h ;1.. hc.lnh, or r<lJ'lll1g
<br />[1lhl. <i.'onwrphl<: Ch:lf:l.'I\'TI'li\;.. mlh..: Itnllll,'JIJIC Jrl,'J ,ur-
<br />fOundm,!! \'3ch oflh.' li:aturc... ,If ,n.. {j:(J."llh-.l ;ir..: Ji,o.:u,,~'d JI\
<br />J[1[1.'nJI'I: 3 (lig.... (,11 Inhlul!h 6SJ "ilrallgrarhlc d.tta and gl"'-
<br />m\'rphlc Ill'''''i.'nalll'n, arl....uI1l1l1ar17o.:d 111 tlll'.\rroYll(,rJI1J.'
<br />SllcSumllla~ ''':CIII'1l hclo\\
<br />
<br />Grain-Size Analvses
<br />
<br />Sam[1lo.:, \\l'r\.' uoll.'.:l..J fWIll 'I.'k'l'll,'d ,tr;(tlgr:lrhl~' unit..
<br />JI '\ITI'Yll (,randc w uhtam gr,lIn-,i/C dJt;1 fllr 'l,'\l.ralll11\ 1;11.
<br />JI.'\lllan. and sh'I'\.'-\I.l,h J.'I'II,II,,\, JI,..:u"..:d Jhll\l' III lhl,'
<br />,.'Cllnn \Ilkd ..\kthl,d...... ."'I1">llkr,lhk \ '-lriall"n III gr;lIn ,ih.
<br />:mJ Ilthl,'r "'I.'dlnwnla~ ~'haraL'lnl,lh:... may llo.:.'llf h\.'t\\I'CIl
<br />d\.'l'l",ih g\.'n\.'rail.:J hy lh..: ,anll. Iy I'\.' "t \kl"""11I1,'UI <.:, <.:nl.
<br />111m I,',I,'T. th\.'".: ,m31y,...., rlll\ iJ~. a rl,'f...rl,'no.:.... framc" ,'rk hlf
<br />Cl'lllp;Jf(ng eharact.'nstl." "f dlni:r~.m dq'o"ull'nal \.'n, Ir.m-
<br />m..nt, rclall\ ChI ...ach "lh..:r II 111Url I,'a~'n '.....:11"11. ;lnd li'r
<br />..\ alualmg ,~'dllll.'ntary Jy n;m1K', 1\ Ilhm 'I'l.nli.' tll,~.d .'\1,'111">
<br />Gr;}ln~,i..<.' dala fnltll ArnlYo Gr;ll1\k ...:tl1lpk.. .Ir.. ..h.,\\ n III rig-
<br />ur.'~ 25 Ihrough ~9. Flgun: Jll ,h.,\\, gr"ln-~lh' Ir..nd.' \1 Ithin
<br />fi'lIr lnJI\ iduaI11""d unl1"> fW1l1 \\ hll.'h lllultll'k' 'amI' I..., \\.'r<.'
<br />lakn:ltditli:r..:nld~.plh,\\ilhIl11hc Ih",dJ"'I""11.
<br />R<.'~ulh of gr;JIll-..i7.... 3n3Iy'''', fi'r '.11111'1,.... lak..'n fW1l1 ,...c-
<br />tllln I la and 01 al ..\ITI'Y" (,rand... :Ire ,h,l\\ n in tigur.'~:' rhl.'
<br />I.)\\t:nlltht ,;!tl1l'k from th... ,<.'.'[1"11 Ih 'trallgrarhy, ,amp!..:
<br />:\(i Slral 1 t> =2. ,IWI\' Ilw \ l'~ tin... gralll<.'d n;Jlur~' Ill' Ih..: h;l,al
<br />pan oflhi, thllld J.'I'""I1. \\hl..:h .:.'nt;lI11"> 1Il11r~'lhan 74 p..:r-
<br />1,;',.'111 ,ill and d;IY Thl,' Jq"hll o.:";lf'<.'lb up\\;trd I'..... ,1I,"lig
<br />301. 'Ilnibr Itl il.I,>d J.'l"hit, J""~.f1o..:J hy Rubin ;md lllha,
<br />(I'NSI, \\hi~'h .:an mJlc.l1": ,..'dlJl1c11I-,upply lil1lll;ltllm dUring
<br />thc Ill'oJ thai prl),ju,,~'d [h... lkrt~'ll Th<.' ,i"'l,lun Llllll ham!,k
<br />.-\(j Stral I a = II thaI 1" ,'rill" thl' tl,'"J ,;llllrkJ In ''''Ctilln It>
<br />I' dhlin~,tly ,,'(I,lr'.'r Ih;llI an~ uf th<.' ';Itl1I'I..., Irom Ih~. 11\1\ lal
<br />d",pl"" (lig ~5 I ]n L';I'..', \1 hl'r... ,!c'.'1!;lI\ ,kP"'lb ,lTl' pWJlK<.'J
<br />hy ;\I'l,lian rC\lllrkln:! "I' AU\I;!I ,....llmcnl. Ill' .'\f'I.'.:l~'d th;.ll
<br />lh~' ,1<."l,liarl J...r."I1"> \\ Ill. m gl,'ll~'r.lI. b,: "'\'.lr,~.r Ih"l1 Ihl. lluI 1;11
<br />"'UTl.... ,..:dinll'nl h....;lll'... ,'f \\ inn,'\\ lI1g and f\.'lll,'\ ;11 "f tilW'
<br />tly \\111.1 'iamrk \(, 'itrJllh =1', \\hld1 1\;1' ":l>ll~IJer.'J In Ihe
<br />tl~'IJ II' h.. tn,,,l Ilkely (r"1ll Ih... url'\'r r;ln "flh.: 11.'\>d d.'I'.hn
<br />
<br />but pU"It>I~ I'art "llhc 11\\.'rly Ing a.:ulian unl!. h'-l' it gram-,"....
<br />Ji'lnhutwrl n1orl,' \.'on~btl.nt wllh thl. urr.:r p:tn uflh.: nOlld
<br />lay..:r Ihan lh~' o\aly Ing ;J..:oli;1l1 ';JnJ llig, 251,
<br />!'Jal,l frulll 1\\0 tl1111J JCpll'll~ \\ilhln ".:..:111l1l 5 ;If..: ~hll\\n
<br />III ligurl. 26, 11 " arrar<.'l1I from lhl' rl1111h;lt IInll H l'lmtam~
<br />JbtilK'lly coar,.'r ,.'dltnent Ihan Unll t L!lIl H ...oar'':lh
<br />up\lard IIi!:, JUl. ..u!:,gc,t1tl!:' thai ,...dltHI,'1I1 ,urrl~ \\,h 111l11h:J
<br />dUring. th.... nu"J lnal J~'rO'lll'J thb unil (Ruhm and I1111l'r,.
<br />1'J4\) l nul. III ~'llntr;t,I. tin.:' up\I;Hd. II1JKal1tl!:' lhal 'I,'JI-
<br />l1wnl-,ul'l'l~ 111nttalll'1I wa.. 11.'.., ,ig!lltil';mt or ah,..nl dUring
<br />lhh n""d, lhh i, lhl' .,,1111': Ill'l,d unl\ m \<111..11 rarld ,.'dllll\.'nt
<br />J.'I'''''1I1\1I11' intcIT.'d fh'm \.:m~'ally l'limhlllg I,'Jd~-pll].,;Jtil\ll
<br />nf1l'k,llig' 5:'.:'('1.
<br />(,r;lln-.,I/.: data rn'1I1 '...\...11 ~lr..llgr;lf1hK;llly ...el.Ju...ntl'-ll
<br />"1mI'll.', \\lIhm ''''"'(IU11 () an: ,hll\'ll lllligur.. 2"', S,llllrk, :\(,
<br />"lr;lIl, =] anJ-\( I Slral (, ~- 1\ ..:r... ~"lkl'k'J tfll111 ,ut'l;I...f1:11
<br />,lr,lIa Ihal unJ..:rll.' ;lnd ol.:rlll' a 1l1."J d"'r\h.1\ fhlm \1 hlcn
<br />th.: 111k.nn~'dlall. li\ l' ,;unrk, \\~'r.' oblalrlcd, fh.' lo\l....r of
<br />Ihl' 1\\ I' ,Uh;I.'f1al d~'I''''lh l :\{1 Slrat h ~ II I' n'ar,.'r lhan lh..
<br />lJl'r.:r l:\li 'itrat h ="'1. In\] bulh (,rlh~'l1l .lr<: ....Mr..l.r than ;my
<br />,,( th..: ':ll11rl.:d 111111J ,.'JiIl1I,'1l1 bl.ll\c.:n Ih....m, Thl"<: ...uha....rial
<br />JI'p'''It.. lI1l'ludl' lo.'all~ tknh'd ,hlP"'-\\;hh ,..:dl111...nl~;\' 1\....11
<br />,h ~'h;lfl,,,;I1 :I11J ;bh r1\akriat ('h:lr.:oal and 3..h panicle, \Il'r.:
<br />I'n',em m..m;ll1 ':1111U!:'h ;ItllllUnh Ihat tt1l'lr I'r"".'IlC'" I' !lot
<br />hdl~"...d 10 ha\.... "lgl1ltil',ml]y atli:.'I.:J an.tly'~', of lh....,... ".!l11-
<br />1'1..:, .111 th..l',.ulto.:r I.'" J~II)() la,..r panKk-'I/.' ;lI1alY7cr. Th...
<br />llu\ 1;11 d"'I'I"III'\(, "Inlt I> t:~ Ihrough ::1>; lig, 1.01 tirq nlar,-
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<br />Figure2S. Gralf1,slzedala from sectIons lalsamllle #lland
<br />Ibl"'2thrOllgh #61.A.royo Grande See allllelldlx3for sample
<br />descrlpllOIlS
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