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<br />a. <br /> <br />A <br />8000 It. DAWSON <br />BUTTE <br /> <br />7000 ft. <br /> <br />6000 It. <br /> <br />5000 ft. <br /> <br />4000 ft. <br /> <br /> <br />Aft? <br />p~ <br />Den:er <br /> <br />Colo <br /> <br />~ LINCOLN <br /> N <br />, ~ ~ A <br />~ <br /> 6 Kilometers <br /> L.-.J <br /> <br />. <br /> <br />Wall Mtn. I nimbrite <br /> <br />Castle Rock <br />Cgl -:0 <br /> <br />D2 <br /> <br />Proposed Core <br /> <br />/ Paleosol <br />,r <br /> <br />b. <br /> <br /> <br /> <br />-------____c>-t_________- <br /> <br />Figure 1 a. Geologic map showing the synorogenic units present in the Denver Basin. <br />Fossilleaflocalities and the site of the proposed Elbert County reference core are <br />indicated. 1 b. Stratigraphic cross-section showing the location of the proposed <br />reference core. Thickness of stratigraphic units based on analysis of over 150 well logs. <br /> <br />Fossil Leaf <br />Localities <br />. 02 (Eocene) <br />... 01 (Paleocene <br />and Cretaceous) <br />. Laramie <br />(Cretaceous) <br />* Drill Hote <br /> <br />Denver Basin <br />Formations <br /> <br />Eocene <br />D Castle Rock <br />Conglomerate <br />I!!iil Wall Mountain <br />Tuff <br />D D2 Synorogenic <br />Rocks <br />Paleocene & <br />Cretaceous <br />o D1 Synorogenic <br />Rocks <br />Cretaceous <br />G Laramie <br />Formation <br />o Fox Hills <br />Sandstone <br /> <br />Geology based on <br />Tweto, 1979. Geologic <br />Map of Colorado <br />A' <br /> <br />2400 m. <br /> <br />2100m. <br /> <br />1800m. <br /> <br />1500m. <br /> <br />1200m. <br /> <br />j Denver Museum <br />, ' orNaturalHistol)' <br />GIS Lab: 1997 <br />