Late-and Post-Glacial History of the Greenwood Moraine and Adjacent River Valleys of South-Central Indiana

Abstract

At the height of the last Ice Age, the northern part of North America was covered by the Laurentide Ice Sheet which contributed to the formation of the recessional feature found in south-central Indiana known as the Greenwood Moraine. Rivers draining from the moraine, flowing adjacent to it, and cutting through it evolved during the late- and post-glacial times. The purpose of this project is to understand the late- and post-glacial chronology of river development using absolute age data. Preliminary analyses suggest a straight-forward river evolution model consisting of several geomorphic processes, are presented herein.