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<br />INDICATORS FOR CHARACTERIZING ALLUVIAL FANS
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<br />jih-,~", !lr ~'i! ,~,*", ",,:BO~ 3-!,. .;;;tjjjiI , h.. !fu.,.!i-,~,
<br />E" IN .THE.cONTEXT.OF~I;I;UVIALFAN FLOODING'ri
<br />0'0', "';"p- '. ~'r L" '4:", "", __ 1;.'" is Z; 'K,'''" ,3 / ~
<br />~~~-r'__~_ ,:ti:, ~ '_~@ fjr.; .,~i:i ~~ ri K ,cv~ '~;j ---~,:.~ [,~ _'_'-~
<br />m . 'hI .~L ~ ,.."!k ,ff&' '''fin' , ,::"1l'h H''! P "I .~ . ..... ~
<br />I,!' .ll?t"~SSlr "le to ~Y:,,~'pr~~ls",e de . ItIOn !~~t, e f,/:~.e '~ri1atJv~IFeceq!'ita~ use~fil
<br />l epoxt:'!iBe~aus~ of tt,C:;1:,antlb1hty, amO"ng ,fans;.tlle complexity of sang]!:. fan~~ and~the 'it.
<br />'~a~g~: ~~~~~s.pr~~~t ~?':f~n ~urrace!, as' we]]~a~~~e,ydous d~v~rsit~ inJ~J .<;:~R?.a..te ~
<br />, "ji.S~)fgl~ ~~OC!Ss~s-operaV~g'?n fajls~ ~he c?m,mJ~te~:>lsn~t ~bl~,to'.~P'~clf);. 'ljsm,gle, t~:,;
<br />./II iljamei,o;u~~fPLq;~.n~g'~het~her?oqn~t a fan ~..a<;!IVe, Ln~tea~~!'su~J\:a JHdgmen17!11u~fb~ .
<br />'.made on a'slte-speclfic bas!s. ",It' '!" ,,1:1 ~""'"'~:"... / f'~ ,~~ ~ '" "" ~ .. ...;~:,~,
<br />~-- - - ;:;;_'.$("."",' +~f'iPV""_>~--~J' :!h.~ -~""'~"'''4i __ ;." ,,>-,:~ .'" _ ", ''''' p':' ,,'- ~,;q: _ t-__""-:>' ',' -n_,
<br />~ At ~ii~~r~lli.!:, ,the",d)~4Pi~e.e cOl)Jide~~~c~t';;to'i~etli!l j\~!~12,9~O lear~thi:
<br />o ocene iioch)/'-which follows a,pai:ticular1y~radjcal'llnd wrdespr~itd dirrrate chang~atthe":i!
<br />'""eJii+", ':;0i#<1!~,!\h4.-*~:e>~,_;r-J/~"'''9if; #*^~- <r._ _ ~-" ,:.:;;q_~ _,' ""'~_ yr" ..,. ~.--- *'%';;;,"'_0i-.-tV ':>__ ~ ;~--"
<br />. ri~)o~,t~e :~IO~r ri~e~t I~e ,'~ge.~~t..the ,ot~,~~' ,~1rem~.:;r$!,~ntl' impli'l,~ ~h;i!tmC:\I'~ri2~ oV,er~,
<br />,.which lias been a relatively uruform ra:nge~of,envlronmental~con'dJtlOns thataffect'floo'd ,~
<br />1/ ~~. --r: ~:~dii~Iib~it~vi~[T~~ti~~.o"f;t~~prp!>.~)I~t~i,~fJ~~n~f~~c';~l:~he ",
<br />.,.;re e>;an '$c ar~t~rfu~fut4re ~are,.hbased,,oQ~the reC9rd- of "the ,,"re"cent;::~homogeneou~,past. "A:
<br />*'---"Z-'?;.7&' J*--~-"qP:""!,tJf~- "if ,~- -__~"1> S0?"- W',,~:i #'", _-~ ~ _J~+;n" ~ '+~-#'''' ,-' 'f< <b'0i -~- ,''''~_ ,.,w~'t'. ""., ';iF _
<br />,Aprol'mmtl exisfsr riowever" in,that there 'often is, no C1ear~indicatio'n ;:m most ,localities ~about "~
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<br />~l1r~,i"'r h"a9~ O"n\'~hoUld '!l:Jok! fu"'defining"'h~th~~th"e"'el<lrJisJtl~~ivcly:unifomT~n'1hrs tif
<br />;;;J~<art~ wlly s~~etx:Js~~asiOn~iiY'strPrise'bx:ulifu~selri flo<rd~Ii"lrards_,;f~;,"
<br />'~'F~r...p~~s"e~9\f~eNat~o~ali~I~~ f~sr~C!iP~??;~.t:~ni IS." .Ir~,
<br />le~ ~icIJ_~?~"Yas;~a~e!to );~e" ~s ~a 'p!anOln~ to~I:~~he, f1p~~~~hl!~a~ I".p.
<br />,:,,~:g-;()fc!;lrnn '~~!~~~yea~~~he'lpO-~ea~~'pd,J9"'",:~lc.~i~s, ~u~II~'l~_ ,""
<br />gel!.!~~~~~..1l J~t k~~e~~ ofth,~ll}.a?,~ttl~ment~ Th~~ t~e e~gJ~~~~ngf~etsp,e~!~~;$
<br />4i>..j!n'!oLves" a"t1mesca, e i a i'<,:entury)~ ove'J.whlcp'~structure~ ar,!l~tYPLc~ly~ deslgtted.~to,~Sl!rvtv\l;;M-
<br />'''cw~~~~hi,~i6J~gi?~I.' ~~~~Y~'iiiv9J";~sii'~~lfJng~:'~~:;;tpf~~d;~it~:t~~~~a},e~.~fe:~(':
<br />'Jfg!Z~!?g~~.pr~~~s,s~~~cr:e:LYlroJ:1!V~nt!1':Y~l:!abl1a!~,~T~e ~~gl~ee~ng~e~spectl~~ !~;~se~;pn-;!~~ t
<br />~~I~~ry,req~em~t,s'I'm'i>;~.py' the N}:'J1; bt~e .geol,':~lc~er~p'estlre !()i~se~'on,:g~q~~~!
<br />~process~Both :persD~tly~s:are4!m!lortant to understandmg a!luYI.al'fan. flooi:hng" Ex.all)ples40f~:
<br />+iif1--~<~"~-;_:'"~"""::2?-Yf-.00~"0-_ '---~#::<:0;i"f'~ _r"C i<<. A2- ~~/?;{, .10f:'!!'~ --x\7; -J>"~-" -_--~ .,q" ''*'4':' i\"-~ ;;;0. ,s;
<br />?iI!',!{arious~itttempts to:oefermiti~" 'offans arid fan'com~orJimts cari~be explorecl"in dep"tll'ioJt
<br />>>>m.if';'0..j ,*-~7d;-~.r;t;;j.":k_~- Gl$}12r'~_ ;<''' --.~_fJiftJJ#:;;;itlftl ,.tr! '--$;&'\ .Je "
<br />",-the ollowm~ r~fere,n_cest.~' 1" "" ", 1:?.Ji.":'"'::r~~ '*;
<br />)1> ~.:, :01,- .~A-..__, g", ,," _,q "'* lG liiii'~
<br />"'.-;?e-,"_-.tR;_).:.,,~,v~ ",', ","'Wif-:' , , _b", ""., ~kt;; ":,,:,,
<br />~.,;~~~;sq~~rn~~ <Lgy:o.~se~~nle _~a ~VI;ttjnrJn..;, hi" !!lsn~lcgu }y,lf~
<br />C1i)ifortlfit,,, U,S:'-GepI6~lll, SUrYey Prgfessi,,'naL,Pliper' 352..;E:T'Re~fr9n"Va,: ,U.Si.'
<br />"'Wil'f1l(:. 'I ~s.ll< '-~ ''iij L.~_ ;,1''4 'flt '~$J;-(t!1~~'..- "-tr. "" ,. ,,\"T'~~IJ;;_ _it" ~!f:,", :oi-o"';, if; ",*it!
<br />Geologica urvey."i;!"'Iii.'.z' .t; . r~,,,,,; '!!! 'Y' ',~I)!' <<; .....,' ''I.., ":,
<br />9 . 00 :Jl' Y'-..' , ~ 'r. ' t. 'If.fit;.. r: .liItl., , lIIifl'lfi4i; '"*' :iJ#:l v. . r' . ,y ill ~'-' .
<br />! , "B,-,\ 968)'Alluvliil;fans. Journal of Geologic E ht17(3); 1 0:1'>1 06.;lh 'r'" ,,-:'t.,.v "
<br />,*YF~,' ""'>'" ,'::t?-?y" >>t"v;,;4l' ''''''-'-j '~, ,,' '~r'~:?:"FBM' ;o-.,~->"h4{i\'~,y, ,,' ,:l'H~ ."i~4fj' 's,,: ,1:,,~ hry
<br />;;;-~~II;~Y;:t B3'19T'1 ~~~;~)luv~,art;an el'!vi,r01ll)lent~~Qgr~~,~~:Ph~J~a~G,eo~[lleh~;lt:~f3:270:~.
<br />'Kell~rJta)~~ }}~:l an~ ;~~, ~~h~r~h:...1 ~{Q~ ~az~d ,~al1~geJr~I,g'llo.n;;~ 'Y1:li:_e'$~~IJle~ 'tom 'Bl
<br />'It..1i B!1tlsh~ €olumj)la~In,AIluvlal:!,~ns:'~~leld.~A ro w~York;i!'. <Wtle "'&,.'
<br />RVc",,".:';i.$,Wi} li",Jk:f:i' ~ ~,;,- ~ ~;:r ,,1F~,- -~_~.. .. t,
<br />sgn;s!: r;4~ ?~4i f:;'_"f~,1f"f r;4'-'~~'~~", ~~-,:Jei:~~ _ s' " ,'~'"
<br />ecc.' :A:i!~901T.h'1~ ""V1a~n'~"rob~eJ?1~rfi:t:'$' Y19~,an I ,Fi!lld'1Appro ~1'Y Xork:
<br />!l,!hnWtle~l'..~2.~';"';;'::'JI'41 ;~,'~~;~'t-". ii\ ,..! ita ";'" i;l,f
<br />et1~"M/lf. J f~'.rC,!!~ic.soils,ofyt\ie ~o~t~:ve~,#, ~;~.fi1 .~~re,~~" ~~.~, iC~!J,S~~~~ty,
<br />'~enqli SpecIal Pap~r 2,93, Boulder~,Colp: :,;Tn~,GeologJcal7SClclety::.ot i\men.ca,ji' "
<br />.,," .&"'Wf'L '< ~JII..2\"'" '''','''' '_' ,,'''' <Self' ~ "t"-",' ,_ % h",011L&. ,$~" -:' ',,, . 'ii. :'mt.-,',;aL
<br />~~ch, ~I;Il;"~~)t~~,~'f~lJJ.:?~~.oopef :] ~?,.l,:f.,<?n.ei'"p~~cti~t~O ' ~~liiHty: in~
<br />*"R"Beolo~IO Ilia tng,~'In S . lltlal V:anablh~les o( S'<2lls~nj J;:andfo - , ausbacty,
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