Seismotectonic maps in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky - Digital Spatial Database: Lamprophyre and peridotite intrusions

Online link https://geo-nsdi.er.usgs.gov/metadata/open-file/97-681/lampdike.faq.html
Description This cover includes locations of alkaline ultramafic igneous rocks. The igneous rocks are evidence for Permian extensional reactivation of the faults of continental rifts in the map area. The igneous rocks are Permian lamprophyres and mica peridotites.
Originators Rhea, Susan
Publication U.S. Geological Survey Open-File Report 97-0681

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States or counties

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PP1538GEOL.PAT

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PP1538MMI.PAT

outlines of hypothetical Modified Mercali Intensity values; digitized from Algermissen and Hopper (1985)

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PP1538MMI.PAT

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PP1538NUKES.PAT

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PP1538RDS.AAT

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PP1538SEC06RR.AAT

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PP1538WB.AAT

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