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Neotectonic structure in the central new madrid seismic zone: Evidence from multimode seismic-reflection data

Seismological Research Letters

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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.

Additional Publication Details

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
Volume
70
Issue:
5
Year Published:
1999
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Seismological Research Letters
First page:
554
Last page:
576
Number of Pages:
23