Thrust faults in southern Illinois basin-result of contemporary stress? ( USA).

W. J. Nelson; R. A. Bauer

doi:10.1130/0016-7606(1987)98<302:TFISIB>2.0.CO;2

Thrust faults in southern Illinois basin-result of contemporary stress? ( USA).

W. J. Nelson, R. A. Bauer

Illinois State Geological Survey

Research output: Contribution to journal › Article › peer-review

Abstract

Many N-trending thrust faults have been observed in coal mines of S Illinois and adjacent W Kentucky. Displacement ranges from less than one inch to about 3 m (10 ft). No known ancient tectonic stress field or nontectonic process has been found to have produced these faults; they correspond to the contemporary tectonic stress field in the region-maximum horizontal compression along an axis trending slightly N of E. This compression is thought to account for the preferred orientation of roof failure in underground coal mines, jointing in roof shales, and minor earthquakes in S Illinois.- Authors

Original language	English (US)
Pages (from-to)	302-307
Number of pages	6
Journal	Geological Society of America Bulletin
Volume	98
Issue number	3
DOIs	https://doi.org/10.1130/0016-7606(1987)98<302:TFISIB>2.0.CO;2
State	Published - Jan 1 1987

ASJC Scopus subject areas

Geology

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10.1130/0016-7606(1987)98<302:TFISIB>2.0.CO;2

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AB - Many N-trending thrust faults have been observed in coal mines of S Illinois and adjacent W Kentucky. Displacement ranges from less than one inch to about 3 m (10 ft). No known ancient tectonic stress field or nontectonic process has been found to have produced these faults; they correspond to the contemporary tectonic stress field in the region-maximum horizontal compression along an axis trending slightly N of E. This compression is thought to account for the preferred orientation of roof failure in underground coal mines, jointing in roof shales, and minor earthquakes in S Illinois.- Authors

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Thrust faults in southern Illinois basin-result of contemporary stress? ( USA).

Abstract

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