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The Colorado front range: anatomy of a Laramide uplift

January 1, 2004

Along a transect across the Front Range from Denver to the Blue River valley near Dillon, the trip explores the geologic framework and Laramide (Late Cretaceous to early Eocene) uplift history of this basement-cored mountain range. Specific items for discussion at various stops are (1) the sedimentary and structural record along the upturned eastern margin of the range, which contains several discontinuous, east-directed reverse faults; (2) the western structural margin of the range, which contains a minimum of 9 km of thrust overhang and is significantly different in structural style from the eastern margin; (3) mid- to late-Tertiary modifications to the western margin of the range from extensional faulting along the northern Rio Grande rift trend; (4) the thermal and uplift history of the range as revealed by apatite fission track analysis; (5) the Proterozoic basement of the range, including the significance of northeast-trending shear zones; and (6) the geologic setting of the Colorado mineral belt, formed during Laramide and mid-Tertiary igneous activity.

Publication Year 2004
Title The Colorado front range: anatomy of a Laramide uplift
DOI 10.1130/0-8137-0005-1.89
Authors Karl S. Kellogg, Bruce Bryant, John C. Reed
Publication Type Book Chapter
Publication Subtype Book Chapter
Index ID 70140090
Record Source USGS Publications Warehouse