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Upper Chlnle Interbadded siltstone, shale, and Ilme- No Information available. Not considered <br /> Triassic Formation 1,000 atone-pebbla conglomerate. Faddish an aquifer In study area. <br /> brown in color. <br /> Lower Shaly silcstone, with interbeoded silty Oats for only one well obtained; water Is <br /> Triassic and State and shaly medium-gralned sanestones a calcium bicarbonate typi. Dissolved- <br /> Upper Bridge 2,700 and silty shales. Reodish trown and solids concentration 1s 463 aw/l. <br /> Permian Formation calcareous in places. Crossbedding <br /> and ripple marks locally present. <br /> Very'flne to medium-grained, poorly sort- No information available. Kay be an aqul- <br /> ed, red to gray sandstone with Inter- far In outcrop area. <br /> Upper Weber bedded siltstone and shale. The gray <br /> Permian Sandstone 100 color In the lower beds Is due to a <br /> hydrocarbon stain on quartz grains. <br /> s <br /> Sor�R !rrng:0.!a!aLG• !^CnI ly Ofeilnt. I <br /> Red, calcareous, arkosic sandstone and Reported well yields range from 5 to 25 <br /> PPm ahaia «141. Interbedded stltstone, galloin. snare fractured aacansivaiy, <br /> Lower grayish-purple Ilmestone, and arkoslc may yield greater quantities of water to <br /> Permian conglomerate. Conglomerates are gen- wells. Important source of motor In <br /> and Upper Maroon S,G00 orally mostly*, containing Igneous. Carbondale area and Crystal River drain- <br /> 4 Formation aatamarphle, and isolated limestone age basin. Water is a calcium blcarbon- <br /> vonian pebbles. Sandstones and shales are ate type In the Cattle Crack and Carban- <br /> often micaceous, nodular, and green data areas and a sodl%r, bicar'1sate type <br /> HIIn color. Crossbedding and ripple In the Crystal River drainage basin. ! <br /> marks are locally present. 1 oistoiveo•:o7i.a s.:,rcant:_;ta:. .:oy.. t <br /> from 154'to 1,160 mg/l. <br /> r2 Interbedded gypsum, dark-gray to black Reported well yields range from 5 to 25 <br /> shale, and gypsiferous siitstene. gal/min. Used as a source of water In <br /> Shales are predominantly calcareous and the Carbondale and Cattle Crack areas. <br /> > Middle Eagle <br /> contain iaterbeds of brownish sandstone. Water Is a calcium sulfate type. Oss- <br /> i Ponnsyl- Valley Pay 3.000 Gypsum is generally massive, white, and solved-solids concentration ranges from <br /> = vanlan Evaporate weathers to a dark gray. The formation 247 to 2,630 mg/l. The occurrence of <br /> a as.a «hot# weathers to a yello.10-gray selenium Is localized; concantratlons <br /> color. Some beds may be halide. In excess of U.S. Public Health Service <br /> (1962) drinking-water standards occur <br /> In the Cattle Crack and Carbondale areas. <br /> Kinturn Formation Limestone, lolomite, sandstone, slit- No Information available. <br /> ,• Cosmic formation stone, shale, quartzite, and soma <br /> of Longenhalm (1352) conglomerate. Pocks are generally <br /> solden formation brownish, light gray to dark gray, <br /> lower Loadyltla Limestone PCu 4,650 hard, calcareous, and may be slightly <br /> P*nnsyl- <br /> ��o wnlan Chaffee Formation to strongly aw/tamorpiwsad. <br /> and older Asnitou 0010m1to <br /> o Peerless formation <br /> _~ Sawatch Quartzite <br /> Table 783.15-1 BEUROCZ UNITS AND GROUND WATER USE, <br /> I <br /> I <br />