NEAR-SURFACE DEFORMATION IN THE NEW MADRID SEISMIC ZONE AS IMAGED BY HIGH-RESOLUTION SH-WAVE SEISMIC METHODS

被引：32

作者：

WOOLERY, EW ^{[1
]}

STREET, RL ^{[1
]}

WANG, ZM ^{[1
]}

HARRIS, JB ^{[1
]}

机构：

[1] UNIV KENTUCKY,KENTUCKY GEOL SURVEY,LEXINGTON,KY 40506

来源：

GEOPHYSICAL RESEARCH LETTERS | 1993年 / 20卷 / 15期

关键词：

D O I：

10.1029/93GL01658

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Over 1.5 kilometers of high-resolution, SH-wave refraction and reflection profiles have been performed in the Madrid Bend area of northwestern Tennessee, approximately 8 km north of Tiptonville, Tennessee, to establish the existence of neo-tectonic, near-surface deformation. The specific area was chosen because of the access it provided to the Tiptonville dome (a Holocene flexure) and the trend of contemporary seismicity within the New Madrid seismic zone (NMSZ). We believed the highest likelihood of near-surface deformation to be over these features. Partially reversed refraction/reflection walk-away tests and common depth point (CDP) seismic profiling, using the non-traditional SH-wave method, have traced antiformal flexure and numerous faults into the late Eocene and Holocene sediments of the Tiptonville dome province of the Lake County uplift (LCU). Vertical displacements exhibited across the faults range from approximately 3 to 30 m. These structures have been interpreted to be neo-tectonic features associated with tensional stresses across the Tiptonville dome.

引用

页码：1615 / 1618

页数：4

共 14 条

[1]

CRONE AJ, 1982, US GEOL SURV PROF PA, V1236, P115

[2]

HAMILTON RM, 1979, 791688 US GEOL SURV, P1

[3]

Johnston A. C., 1992, Seismological Research Letters, V63, P193

[4]

NORMINTON EJ, 1990, 60 ANN INT M SOC EXP, P376

[5]

Robinson ES, 1988, BASIC EXPLORATION GE

[6]

Russ D.P., 1982, GEOL SURV PROF PAPER, V1236, P95

[7]

RUSS DP, 1979, GEOL SOC AM BULL, V90, P1013, DOI 10.1130/0016-7606(1979)90<1013:LHFAER>2.0.CO

[8]

[9]

Sexton J. L., 1988, Seismological Research Letters, V59, P141

[10] EVIDENCE FOR RECURRENT FAULTING IN THE NEW MADRID SEISMIC ZONE FROM MINI-SOSIE HIGH-RESOLUTION REFLECTION DATA [J].

SEXTON, JL ;

JONES, PB .

GEOPHYSICS, 1986, 51 (09) :1760-1788

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