SINIAN PALEOMAGNETIC RESULTS FROM THE TARIM BLOCK, WESTERN CHINA

被引：22

作者：

LI, YP ^{[1
]}

LI, YG ^{[1
]}

SHARPS, R ^{[1
]}

MCWILLIAMS, M ^{[1
]}

GAO, ZG ^{[1
]}

机构：

[1] BUR GEOL & MINERAL RESOURCES,GEOL RES INST,XINJIANG,PEOPLES R CHINA

来源：

PRECAMBRIAN RESEARCH | 1991年 / 49卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/0301-9268(91)90056-G

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

A Sinian (latest Precambrian) section composed of shallow marine carbonates, nonmarine clastics, tillites and minor volcanic rocks, is exposed in Wushi, along the northwestern margin of the Tarim block of China. Paleomagnetic results from this section reveal at least six geomagnetic field reversals. A comparison between Sinian and Devonian paleomagnetic data suggests little net paleolatitude shift during the Early Paleozoic for Tarim. The low inclinations from layers strati-graphically above and below the tillites indicate that they were magnetized in shallow (8-degrees +/- 6-degrees) paleolatitudes (north or south). Precise magnetostratigraphic correlation with other Sinian sections is hampered by difficulty in recovering a complete paleomagnetic record, disconformities and unconformities within the section, and a complex mixed polarity interval.

引用

页码：61 / 71

页数：11

共 28 条

[11]

KRONER A, 1980, AM J SCI, V280, P942, DOI 10.2475/ajs.280.9.942

[12]

LI Y, 1988, DELP TOKYO INT S, V60

[13]

LI Y, 1988, THESIS STANFORD U

[14]

LI Y, 1987, XINJIANG GEOL, V5, P35

[15] PRELIMINARY PHANEROZOIC POLAR WANDER PATHS FOR THE NORTH AND SOUTH CHINA BLOCKS [J].

LIN, JL ;

FULLER, M ;

ZHANG, WY .

NATURE, 1985, 313 (6002) :444-449

[16]

LIU C, 1988, SCI SINICA B, V3, P314

[17]

Lu S N, 1983, PRECAMBRIAN GEOL, V1, P1

[18] ANALYSIS OF PALEOMAGNETIC INCLINATION DATA [J].

MCFADDEN, PL ;

REID, AB .

GEOPHYSICAL JOURNAL OF THE ROYAL ASTRONOMICAL SOCIETY, 1982, 69 (02) :307-319

[19] PERMO-TRIASSIC MAGNETOSTRATIGRAPHY IN CHINA - NORTHERN TARIM [J].

MCFADDEN, PL ;

MA, XH ;

MCELHINNY, MW ;

ZHANG, ZK .

EARTH AND PLANETARY SCIENCE LETTERS, 1988, 87 (1-2) :152-160

[20]

MCWILLIAMS MO, 1980, J GEOL, V88, P1, DOI 10.1086/628470

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