EVIDENCE FOR CONTEMPORARY VERTICAL FAULT DISPLACEMENT FROM PRECISE LEVELING DATA NEAR THE N.pdf
- 1、本文档共10页,可阅读全部内容。
- 2、有哪些信誉好的足球投注网站(book118)网站文档一经付费(服务费),不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。
- 3、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。如您付费,意味着您自己接受本站规则且自行承担风险,本站不退款、不进行额外附加服务;查看《如何避免下载的几个坑》。如果您已付费下载过本站文档,您可以点击 这里二次下载。
- 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“版权申诉”(推荐),也可以打举报电话:400-050-0827(电话支持时间:9:00-18:30)。
查看更多
EVIDENCE FOR CONTEMPORARY VERTICAL FAULT DISPLACEMENT FROM PRECISE LEVELING DATA NEAR THE N
Bulletin of the Seismological Society of America, Vol. 71, No. 6, pp. 1933-1942, December 1981
EVIDENCE FOR CONTEMPORARY VERTICAL FAULT DISPLACEMENT
FROM PRECISE LEVELING DATA NEAR THE NEW MADRID SEISMIC
ZONE, WESTERN KENTUCKY
BY F. STEVE SCHILT AND ROBERT E. REILINGER
ABSTRACT
Relative vertical displacements of bench marks in extreme western Kentucky
have been determined by comparison of successive leveling surveys in 1947
and 1968. The resulting pattern of apparent surface deformation shows a steep
offset which can be closely modeled by a normal fault buried in an elastic half-
space. The offset is located near the northern boundary of the Mississippi
Embayment and the New Madrid seismic zone, an area where faults have
previously been inferred on the basis of both geological and geophysical evi-
dence. If the apparent movement is due to slip along a fault, several lines of
evidence (regional structure, earthquake data, and lineations) suggest that the
postulated fault trends NNE. Thirteen earthquakes were recorded in this area
between the times of leveling; focal mechanisms exist for three of these. The
nearest of these three focal mechanisms to the leveling offset implies normal
faulting. The magnitude of the earthquake, however, appears to be too small to
account for the amount of slip required by the fault model. Thus the apparent
deformation may have accumulated with several undetected small earthquakes,
or gradually as aseismic creep.
INTRODUCTION
The purpose of this study is to examine the possibility that anomalous surface
deformation near the northern end of the Mississippi Embayment, as measured by
repeated precise leveling surveys, was caused by movement along a buried fault.
The area studied is between Wickliffe and Paducah, Kentucky, and the leveling
data, when supplemented with other geological and geophysical information, suggest
dip-slip displacement along an unmapped, concealed fault.
Brown and Oliver (1976) have compar
您可能关注的文档
- delay-locked loop.pdf
- Delta pt54螺钉.pdf
- Deleting Vertices To Bound Path Length.pdf
- Demand_Guarantees_and_Unfair_Calling_of_Guarantees.pdf
- Demand-supply_chain.pdf
- Denitive identication of louping ill virus by RT-PCR and sequencing in eld populations of I.pdf
- Density profiles and clustering of dark halos and clusters of galaxies.pdf
- Deformed Instantons.pdf
- Design and testing of a locally made loop-type thermosyphonic heat sink for stove-top.pdf
- Design configuration for a higher efficiency air conditioning system in large space building.pdf
- 第18讲 第17课 西晋的短暂统一和北方各族的内迁.docx
- 第15讲 第14课 沟通中外文明的“丝绸之路”.docx
- 第13课时 中东 欧洲西部.doc
- 第17讲 第16 课三国鼎立.docx
- 第17讲 第16课 三国鼎立 带解析.docx
- 2024_2025年新教材高中历史课时检测9近代西方的法律与教化含解析新人教版选择性必修1.doc
- 2024_2025学年高二数学下学期期末备考试卷文含解析.docx
- 山西版2024高考政治一轮复习第二单元生产劳动与经营第5课时企业与劳动者教案.docx
- 第16讲 第15课 两汉的科技和文化 带解析.docx
- 第13课 宋元时期的科技与中外交通.docx
文档评论(0)