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 | |
| State | Published - 1987 |
ASJC Scopus subject areas
- Geology