Neotectonic structure in the central New Madrid seismic zone: Evidence from multimode seismic-reflection data
Seismological Research Letters
By: E.W. Woolery, R.L. Street, Z. Wang, J. B. Harris, and J. McIntyre
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Abstract
Approximately 14.5 km of conventional P-wave and 2.2 km of horizontally polarized shear-wave seismic-reflection data acquired in the Kentucky Bend area of the central New Madrid Seismic Zone provide evidence of extensive neotectonic near-surface structure. The style and geometry of the deformation are consistent with documented historical geomorphic features, contemporary geomorphic features, and contemporary seismicity. The data image high-angle transpressional faults that strike between N30°W and N50°W. The fault planes exhibit apparent northeast and southwest dips. The opposing high-angle planes represent secondary splay or imbricate faults that responded to torsional bending of a lower-angle master fault.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Neotectonic structure in the central New Madrid seismic zone: Evidence from multimode seismic-reflection data |
| Series title | Seismological Research Letters |
| DOI | 10.1785/gssrl.70.5.554 |
| Volume | 70 |
| Issue | 5 |
| Year Published | 1999 |
| Language | English |
| Publisher | GeoScienceWorld |
| Description | 23 p. |
| First page | 554 |
| Last page | 576 |
| Country | United States |
| State | Arkansas, Illinois, Kentucky, Missouri, Tennessee |
| Other Geospatial | central New Madrid seismic zone |