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Driftless Areas: Illinois, 2004 illinois

1994. Illinois State Geological Survey. This is a polygon feature class containing driftless areas in Illinois. These areas are analogous to areas of the state where the bedrock surface i...


Earthquake Epicenters Of Ohio: Ohio ohio-state

Ohio Department of Natural Resources. This data set contains information pertaining to Ohio earthquakes that have an instrumental magnitude of 2.0 or greater. This data set was created ...


Earthquake Paleoliquefaction Sites: Indiana purdue

2003. Indiana Geological Survey. EARTHQUAKE_LIQUEFACTION_IN is a point shapefile that shows sites where paleoliquefaction features have been identified in the field by Pat Munson o...


Ecological Sections of: Minnesota minnesota

2014. Minnesota Department of Natural Resources (DNR). This coverage provides information for all three levels of the Ecological Classification System (ECS): Provinces, Sections, and Subsections. The b...