1987-12-01_PERMIT FILE - C1981017 (207)

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• GEOLOGY Leaor-iption a(ysoC y{a vista mvl .Hai,^hydrolcyip p opartiaa fMaalmw System Series Geologic unit Symbol tnlcl.ness Physical tnaracteristics ' hydrologic <baracterlstics 1 (feet) lift Clay, silt, sand, gravel, and boulders. ?Reported ..ell yields era as much as 25 Colluvium Qc 50 Generally poorly sorted and angular. i gel/ntln. Scurca of rater For many i Formed as a result of debris accumu- springs. water quellty dependent on ! i+tlon at foot of slopes. composition of parent material. Clay, silt, sand, and gravel. Deposits Reported wall yields are as much as 75 are moderately to poorly sorted and ( gal/din. Important source of water to consist of either angular or roundad Csrbondsle area. Water quality varlsble fragments. and dependent on underlying bedrock and soures of alluvial material. water is a Nolocme I calcl ue sulfate type or a calclum blear- cones type. Dissolved-solids concan- Alluvlua Qol 200 tration ranges from 245 to 1.460 mg/1. Salenl�m occurs in gauss of U.S. Public i MuIth Service (1%2) drinking-water a standards where alluvium Is in contact with tnr Eagle Valley Evsporlie,. Hydra*- He conductivity values range from 1.0 ft/d In the Cattle Creak valley to i00 ft/d In the Roaring Fork River valley. Olivine b.satt, dark-gray, moderately to Reported .all yields generally range from highly vesicular and often dense. Can- 25 to 50 gal/,sin; yields of 100 gal/mid monly jointed and fractured and weatn- ere not uncommon In collapsed areas. ers to • reddish-brown color. I Basalt is priaury source, of water In Cat- tle Cfe-ek drainage basin; n0 lnfafmatlan Pleistocene easalt Qb 1,000 avallabts for basalt in western part of Crystal River drainage basin. Water is A calclum bicarbonate type. Dissolved- solids concentration ranges from 1I1 to 425 mg/I. hydraulic conductivity values range front 1.0 to 40 ft/d. I I f Pradtminantiy granodiorite and quarts MO Infor-4tion avallabte. Not an aquifer tl(ocane Indster- MAzonite, lignt-gray to brovn, medium- In study area. Mlaune igneous rocks Ti I min*to grained, dense, and hard. Fracturing -J i 01190ceaa and jointing ccvnnon. _ I Ciaystone, rudstons, and shale with In so information available. Not an aquifer s- Wasatch tar beds of slltstone and con lone r ate. In st.Jy area. Eocene Fo raaclon Tw 6,000 Coarser grained beds tend to 4e arkostc and lenticular.i Interbedded sandstone, shaly sand, shale, Data for only one all obtalnsd; water is and coal. Sandstones are can in color, a u lcivnt blcarbonats type. Dissolved- Iva, and fora prominent ridges. solids concentration Is 181 my/1. ! Formation Rmv 2,700 Shales are greenish gray and local!' Upper carbonaceous. Coals are economically Cretaceous ! Lngor;ant. Dark-gray snala, .,Ith Interbedded sand- Cate for only one moil obtained; water Is v Marcos 4,006 Stcna, silts[ona, and I!mcatcna. a u Iclum bicarbonate tree. Dissolved- Shales Shales are calcareous and slightly solids concentration Is 237 mg/l. u : t I carbonaceous. Locally fossiliferous. ' 1 Predominantly 1(ynt-gray, very fine to (tw information avail+old. May be an +qul- Dakota Sandstone medlurm, ,ell-sorted, well-cemented, far In outcrop area. I Low.r and 100 sandstone with shale and siltstone f1i Cretscao.s Burro Canyon y interoeds. Chert-pebb1e congl.xarates 1 I Formation ( are common. The sandstone weachers to a rust-brain color and forms ridges. i i f Yarlcolored snale with Interbedded light- 1 ho InforcatIon avallabts. May be, an aqui- ' I gray $andstono and slltstans and dark- , far in oeterop area. Morrison ' gray limestone. Sandstone beds are I Ferratlon ; 1�S i more prominent In the lower part of the formation; limestone beds, in the f Upper , 4 middle. 11 Jurassic KPu ! -t- -+ 33 Sandstone, yallowlsh-gray to gray, very 1 No Informatloh svall+b(e. May be an egvl- Entrads I i 150 fine to medium, well-sorted, cross- for in outcrop area. Sandstone I beJded, and calcareous Weathers to i ! an orange-gray color; forms ridges. I J