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<br />. <br /> <br />. <br /> <br /> <br />GEOLOGY OF GREEN AND YAMPA RIVER CANYONS <br /> <br />689 <br /> <br />10.0- rES UfiV", TH1"' CHARACTER OF THE SEDIILENTS <br />TEll FORMATION SECTION NESS <br /> . Gray, often cherty, limestones weathering <br /> m,~ .......... <br /> ....".... <br /> ~~g ......... red alternate with thick tine-grained <br /> white to terra cotta. red sandstone beda <br />~ I-" .. ' .. in upper third of the formation. Mauve <br />! -=->- '-= calcareous shales (marls tones ) and <br />~ Morgan . ........ '128m limestones, occaSionally cherty, occupy <br />i:1 1'-,' , 1:' 1 middle portion. Cherty limestones, <br />~ ~ darker in color, occur in the lower sec- <br /> tion. Brachiopods, corals, bryozoa, <br />.. ~ ......... ... foraminifera,and other forms abundant. <br /> '" <br /> - <br /> - Black carbonaceous shale containing light- <br /> - - - colored plant-bearing quartz sandstone <br /> - - - <br /> - - <br /> .. , , : : is underlain by white to ~ellow quartz <br /> . " .... sands tone, medium- to fine~grained and <br />... .' 1 .:....::::.:.::-:~ ,185 often containing thin carbonaceous <br /> :i~":f~' streaks. Also a thin layer of fine coo- <br /> ,~~,.. glomerate with hematitic cement. Some <br /> ...... limestone and red (hematitic) anguJ,.ar <br /> .... .. conGlomeratic sandstone occur at base. <br /> ,",Il.~ ..4."" <br /> Unconformity? I~"~"'* <br />~ Buff' to dark gray porous, shattered and <br />H fetid limestones and dolomites. Sandy <br />.. ~' at base. Some gray to pink chert. <br />i'1 <br />~ ~ Madison 600 occasional fossiliferous ]ayers-. Cup <br /> , corals, colonial corals, ~uomoha1Us. <br />'" brachiopods and occasionaI trilobite <br />'" " <br />H pygidiums. <br />'" " <br /> Unconformity , , <br /> , ';j'hite to red coarse poorly-sorted quartz- <br /> .;0.......'-...... i.... <br /> itic and in part arkosic sandstones at <br /> , U,o.- t.op, middle and base. . },;iddle layeh is <br />';;j -- - very glauconitic. The sandstone members <br />~ " 400 separated by 2 layers of s11ty shale <br />H Ledore , , .' .,' are <br />~ g: .'..... containing thin sandstone beds which aee <br /> " .'....... <br /> .~r...,...~ fre~uently sqmewaat glauconitic and <br />u ~, ..~ fossiliferous. occasional trilobites <br /> - <br /> .. . .'. and very small brachiopod and ~astropod <br /> ......; <br /> '" .., forms. <br /> .......... <br />~ Unconformity ..' ~ .. ' <br /> -' <br /> Jr~:::: Red to white coarse quartzitic, in part <br />~ Uinta ],~buntai 12,60 arkosic) sandstones and conglomerates. <br /> ~roup .--..... .-. :t Some thin shale beds. Bleach spots <br /> .,.,,...... <br /> .......... corm<jon. <br /> <br />r <br /> <br />TABLE I (continued) <br />