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U.S. GEOLOGICAL SI~RVEY <br />' I>RILL-HOLE LOG, JACKSON COUNTY, COLORADO <br />Hole No. E23 (coutii~ued) <br /> <br />LITHOLOGY °i <br />a GEOPHYSICAL LOGS <br /> F <br />N G SP RES DEN <br />188-200 Mudstone, medium-gray; inter- _ ~i ~- <br />bedded, white, very coarse <br />gaained to very fine pebble <br />gravel, angular, poorly con- <br />solidated sandstone <br />200-216 Coal; medium-gray mud stone <br />at 203-205' <br />216-229 Siltstone, white <br />229-298 Mudstone, silty, medium-gray <br />298-306 Mudstone, brownish-gray <br />DEPTH <br />FT M <br />100 <br />350 <br />110 <br />120 <br />400 <br />130 <br />450 <br />140 <br />150 <br />500 <br />160 <br />550 <br />170 <br />180 <br />600 <br />190 <br />650 200 <br />210 <br />~ 700 <br />65 <br />