Seismotectonic maps in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky - Digital Spatial Database: Damaging Earthquakes

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Description This cover consists of location and size information for historical and recent earthquakes that caused Modified Mercalli Intensity (MMI) VI (6) or higher in the map area. There were 26 earthquakes that caused that level of damage. The most reknown are the
Originators Rhea, Susan
Publication U.S. Geological Survey Open-File Report 97-0681

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States or counties


Digital map polygon coverage

Label Definition
PTYPE Polygon type
UNIT Map unit symbols (No definitions given)
Lslide Landslide deposits
AGE Age of deposit
LITH Lithology of map unit abbreviation
AGELITH AGE and LITH attributes combined (No definitions given)
FM Numerical symbol for geologic map unit
NPTYPE Numeric Ptype


Linear map features

Label Definition
LTYPE Line type
SOURCE Source of line information


Digital map point coverage (same attributes as polygon coverage SSFB_M1.PAT)

Label Definition