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..1 <br />_1 <br />_' <br />1 <br />2006 Subsufence and Geologic Field Obsar,ipons <br />Box Canyon, Wast Flatiron. Apache Rocks, and South of Divide +dmnrt Arno <br />The rocks apparcntl~ laili.~l along tnrcular to cun'cd I'ractures:uul urji~ints. Tltr n+ck mass rm+a <br />likaly canto louse along gracit~-induce ti•actures, wluch ulxnrd mttl lailcd due to periodic <br />aching. freezing, and tha\\ing-and perhaps \~ihrations In»n the nrarby load out lacthties. <br />c;ravit\•-induced fr<u•turing and rock failure is cumnnm in the cliffs o(11 est flmirim ahcrc, as i~ <br />the case here. Ihrre a little or nu lateral support 11'igure ~). <br />1-hc potential exists firr more gra\np-induced fracturing and failura to eventually occur in This <br />area. liax•tl nn tiel~l .+h~erc:ttinns, tht. arr.t :h+ml~l he cla..i!ir,l a, ,t con hteh lu»rnt:.tl ru~l.tall <br />:II'i <br />133t-O:i2,750 Wright Watar Engineers, Inc, Pago 32 <br />Derembor 7.006 <br />I ieure :5. fhr atierhangmF ehil and ru;ktidl area ut l.+~ealion 1'. lo„kmi; .ouch aaro,. <br />du• S,rth lark fhe \\'ea IJk xLnr load ~,ut anJ ,tacker tardau•. (tapt arc m the <br />hackgroun.l and Iley li7 thoui~nu i• m he tUrogmursd the ma~.nc ..+ndavnr rind <br />o+erlyurr s;urd..tane Ird~es:+~crhe thr li.•ar (~oul nnnr tlaarted in the (~-tie:eu). lia.cd on <br />the ueathcrrd :nnduum of the I:dlcn rock. t++~• ddicrcm age> an +•hscnrd, ~cluch <br />appanntl> accurml many daadc. a):n I Ich1 and a ti•+c dear: to a d~•eadc ago In~hl ). <br />