Of Indiana, whether buried beneath unconsolidated (e.g., soft sediment) materials or cropping out at the Of the bedrock surface and the degree of dissection of the land by running water. South of the Tipton Till Plain, the glacial-drift cover is thin or absent, and topography is controlled by Photograph of glacial outwash composed of sand and gravel. Surface is relatively high in elevation and because the locale has more than 100 feet of glacial sedimentsįigure 3. This topographic high exists because the bedrock Indeed, the entire area is but a rolling upland surface. The hilltop that attains thisĮlevation is, however, unimpressive as a vantage point from which to view the surrounding countryside.
Southern extremity of the Tipton Till Plain in northern Wayne County. It may seem strange, but the highest elevation surface in Indiana (1,257 feet above sea level) is on the With time, the buried ice blocks melt leaving behind a kettle hole or a kettle lake.
Which contain lakes, form when large blocks of the melting glacial ice are buried beneath outwash sediments. With ablation or flow till that formed during times of glacial retreat. Part of the topographicĮxpression is the result of moraine formation by active ice and by the overspreading of the region The bold upland surfaces of, for example, Lagrange and Steuben Counties. The same glaciers that masked relief on the bedrock surface also produced The Northern Moraine and Lake Region of northeastern Indiana typifies this kind of terrain and is notedįor its spectacular scenery. Parts of glaciated Indiana, however, are hilly with many features of relatively high relief throughout. 2 and 3)Īnd covered the bedrock hills of northern Indiana to produce the flat to gently rolling landscape thought of by many as monotonous. Thick accumulations of till and outwash filled the bedrock valleys (figs. Of sand, silt, clay and boulders) when the glaciers advanced into Indiana and as outwash sand and gravel Sediments borne by the ice sheets were deposited as till (an unsorted mixture 1) is a flat to gently rolling surface that is the product of continental glaciation during the Ice Age. The process of glacial scour and infilling of valleys has resulted in the Tipton Till Plain. Glacial till fills a shallow stream channel that was incised into the underlying bedrock. Indiana Geologic Names Information Systemįigure 2. Underground Coal Gasification Potential in the Illinois Basin Landmarks in Indiana Geology - A Timeline
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