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The AAPG/Datapages Combined Publications Database
GCAGS Transactions
Abstract
Late Pleistocene and Recent History of a Portion of the Colorado River Valley, Texas
John J. W. Rogers, Judith C. Longshore
ABSTRACT
The modern valley of the Colorado River near Columbus and Eagle Lake is incised into terraces representing depositional surfaces of early Pleistocene sediments. The terraces normally cut landward from the deltaic shoreline areas have been accentuated by continued Pleistocene uplift along a down-to-basin fault crossing the river near Eagle Lake. Extensive deposition of coarse materials in the sag below the fault has steepened stream and terrace gradients in comparison with gradients above the fault. The present river is progressively moving coarse materials downstream from earlier deposits.
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