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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />iJ~l~3J <br /> <br />GEOLOGIC AGE <br />IMllLlONS OF YEARS AGOI <br /> <br />CENOZOIC <br />ERA <br /> <br />MESOZOIC <br />ERA <br /> <br />OUATERNARY <br />PERIOD <br /> <br />11 ! 1 <br /> <br />TERTIARY <br />PERIOD <br /> <br />70 ! 2 <br /> <br />CRETACEOUS <br />PERIOD <br /> <br />1351: 5 <br />JURASSIC <br />180:t 5 <br />TRIASSIC <br />225! 5 <br /> <br />PERMIAN <br /> <br />270 1: 5 <br /> <br />MAP COLOR <br /> <br />~.i~ <br /> <br /> <br /> <br /> <br />PALEOZOIC PENNSYLVANIAN <br />ERA PERIOD <br /> <br />310 +- 5 <br />PRECAMBRIAN older than 950 <br /> <br />UlIII not map~Jt:d <br />in project area <br /> <br />MAP SYMBOL AND DESCRIPTION <br /> <br />LEGEND <br /> <br />Oa ALLUVIUM <br /> <br />Of ALLUVIAL FAN <br /> <br />Oc COLLUVIUM <br /> <br />Oil LANDSLIDES <br /> <br />01 TERRACE DEPOSITS <br /> <br />Tbb BASALT FLOWS <br /> <br />Tbp BROWNS PARK FORMATION <br /> <br />Tu UINTA FORMATION <br /> <br />Tqp PARACHUTE CREEK MEMBER <br />GREEN RIVER FORMATION <br /> <br />Tql LOWER MEMBER <br />GREEN RIVER FORMATION <br /> <br />Tw WASATCH FORMATION <br /> <br />Kw WILLIAMS FORK FORMATION <br />MESA VERDE GROUP <br /> <br />KI ILES FORMATION <br />MESA VERDE GROUP <br /> <br />Km MANCOS SHALE <br /> <br />Kfm FRONTIER SANDSTONE and <br />MOWRY SHALE <br /> <br />Kd DAKOTA SANDSTONE <br /> <br />Jm MORRISON FORMATION <br /> <br />Ja ENTRADA SANDSTONE <br /> <br />11 c CHINLE FORMATION <br /> <br />Tt q GARTRA SANDSTONE <br /> <br />11 PI STATE BRIDGE FORMATION <br /> <br />PlPw WEBER SANDSTONE <br /> <br />PIPm MAROON FORMATION <br /> <br />lPom EAGLE VALLEY and <br />MINTURN FORMATIONS <br /> <br />PE PRECAMBRIAN <br />UNDIFFERENTIATED <br /> <br />CONTACT <br /> <br />U <br />D <br /> <br />- <br /> <br />FAULT (RELATIVE MOVEMENT) <br /> <br />I <br />I <br />t <br /> <br />. <br /> <br />ANTICLINE (PLUNGE) <br /> <br />~ <br /> <br />SYNCLINE (PLUNGE) <br /> <br />200 <br />~ <br /> <br />STRIKE and DIP (BEDDING) <br /> <br />o <br /> <br />SINK HOLE <br /> <br />GEOLOGIC MAPPING ON USGS 7 '/2' OUADRANGLES <br /> <br />2 <br /> <br />o <br />, <br /> <br />4 <br /> <br />6 FEET <br />, <br /> <br />SCALE <br /> <br />, In en- 2.000 Foot <br />TOPOGRAPHIC CONTOURS ,,, 40 FOOT INTERVALS <br /> <br />WHTE RIVER GEOTECHNICAL STUDY <br />REGIONAL GEOLOGIC COLUMN and KEY <br /> <br />Plate 3 <br />