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<br /> <br />. <br /> <br />. <br /> <br />688 <br /> <br />G, E, UNTERMANN AND B, R, UNTERMANN <br /> <br />SYS, SER- GROUP GOLUMNAR THICK CHARACTER OF THE SEDIMENTS' <br />TEM IES FORMATION ,SECTION NESS <br />" I llii~[ Buf:rto red uniform strongly cross-bedded <br />H .. medium-grained sands~one. Eolian. <br />~ ~ Basal layers probably waterlain'and oon- <br />~ >l " Nav$jo 700 tain occasional 4-toed dinosaur tracks. <br /><3 Sandstone and limonite ooncretions. <br /> Unconfonni ty -.. " <br /> ~::-:-'7~:': predom~nately red shales, marls and ail t- <br /> ...... '."'. stones of fresh-water ,origin. Ripple <br /> .--.~'..::: marks and mudoracks. phytosaur teeth <br /> .......-.......- <br /> ~ Ghinle ':';,.2~"~:' 230 and bone fragments and amphibian bones <br /> ~ in .lower varicolored shales. Calcite <br /> p 'j ~.':.-:~.::: geodes abundant. A 20-foot layer of <br />" ~~~.! white sandstone occurs in the upper <br />H ,.....-. third of the formation. A small amount <br />'" F:-::-:- of fine conglomerate. Silioified wood. <br />~ <br /> I:" " <br />o. t:::~;,:~~>: Light buff to yellowish fluviatile oon- <br />~ <br /> 0. i'.'":,',, glomerate and coarse sandstone Qontain- <br /> 15' Shinarump :......... 45 ing quartz, quartzite and chert pebbles <br /> ,.." ... <br /> ~ - ..-,. .. : of various colors, usually under 2 inche <br /> ~ ~ .f'. , I., <br /> J. ~. , ". "". ...... ' in length. Silicified wood oammon. <br /> .. .. . ",',. <br /> .... .'" Basal conglomerate of the Chinle? <br /> I- Unconformi ty . .. .. ~ <br /> :." .'. I'. <br /> ~ t'~..'~ Briok-red gypsiferous ~oareous shales <br /> ! Moenkopi jj 800 and siltstone,s.. Reptilian traoks <br /> probably Chirotherium. <br /> . <br /> Light gray thinly-bedded fossiliferous <br /> - limestone, caloareous sandstone and gray <br /> ~~-.r red'\land yellowish shale. Marine, Green <br />I Park City L:';''':,:,. :. So to purple oalcareous and silioeous <br /> (Phosphoria . g~ode'S . Phosphate not well 4eveloped in <br /> the monument area, but is of high com- <br /> ~,ll ~ II\~ ,4 mercial value north of Vernal where the <br /> formation is much thicker. Hydrooarbon <br /> streaks <br /> :... .... <br /> '-"', ..." Whi,te to light gray or buff uniform fine-t <br />~ Weber 1(::';<:':: 1000 medium_grained siliceous and calcareous <br />I) ~ ,~:.i: :::~; ~~:~:::, sandstone. Massive. probably marine. <br />I Cross-bedded. Poor pementation in most <br />p:i areas ~~Balapid erosion producing , <br /> I' .... , rugged oanyon' oountry. "Ribbon"' stainil14 <br />. i~'::~::/): <br />1'\ on canyon walle. The prinoipal producll14 <br />Po formation in the Reigely Oil Field, <br /> <br />TABLE I (continued) <br /> <br />