PHYSIOGRAPHY OF IOWA The following is a brief summary of the bedrock history and development of the present surface. At the close of the Cretaceous Period the area which is now Iowa was a land surface. The soft Cretaceou

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Date: 2014-08-18 10:11:33		PHYSIOGRAPHY OF IOWA The following is a brief summary of the bedrock history and development of the present surface. At the close of the Cretaceous Period the area which is now Iowa was a land surface. The soft Cretaceou Add to Reading List Source URL: s-iihr34.iihr.uiowa.edu Download Document from Source Website File Size: 37,52 KB Share Document on Facebook