Description: The map depicts bedrock geologic units exposed and covered by glacial sediment in Renville County. The interpretation relies on previously published and unpublished geologic mapping, augmented with high-resolution geophysical data and field work by the authors. The bedrock ranges in age from Paleoarchean (3600-3200 Ma, or million years old) to Late Cretaceous (~90 Ma), and records a complex history involving multiple igneous, sedimentary, metamorphic, and tectonic events, as well as significant episodes of weathering and erosion.
Service Item Id: 81a27a53d50044119a04e28d0fb1c375
Copyright Text: Mark A. Jirsa, Dale R. Setterholm, and V.W. Chandler
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Description: The geologic units show the distribution of surface materials, based on geologic origin and organized by relative geologic age for Renville County.
Color: [0, 0, 0, 255] Background Color: N/A Outline Color: N/A Vertical Alignment: bottom Horizontal Alignment: left Right to Left: false Angle: 0 XOffset: 1 YOffset: 1 Size: 9 Font Family: Calibri Font Style: normal Font Weight: normal Font Decoration: none