Deformation feature of the Asian continent
亚洲大陆变形特征
基本信息
- 批准号:11691129
- 负责人:
- 金额:$ 4.8万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:1999
- 资助国家:日本
- 起止时间:1999 至 2001
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The Indian subcontinent collided with the Asian continent and subsequently penetrated into southern Asia. Collision and penetration of tectonic blocks resulted in large scale deformation in the Asian continent. The mode of tectonic deformation of the Asian continent has been widely debated during the last two decades. The Asian continent is regarded to behave as either a deforming continuum material or as an assemblage of rigid bodies. In the continuum model, penetrated material in Asia due to intrusion of India is absorbed by crustal thickening beneath the Tibetan plateau and by tectonic rotation of crust along both sides of India. The rigid body model stresses that major strike-slip faults play an important role in accommodating the deformation between India and Asia, and that the regions between the major faults move as rigid blocks. Recently the relative importance of these two modes has been tested through velocity field determination of the Asian continent using Holocene geologic record and geodetic information from GPS data.An alternative method for evaluating the style of deformation within the Asian continent is paleomagnetism. We collected Jurassic to Paleogene redsanstones from Tibet, Indochina and Yangtze blocks during the last three years. Post-Cretaceous clockwise rotation of the crustal blocks was observed over a broad area that extends from eastern Tibet through South China to Indochina in this study. Large-scale southeastward displacement was also suggested for Indochina block and Simao block. Paleomagnetic data from the Yangtze, Indochina and Simao blocks offer an opportunity to better understand the intracontinetnal deformation of the Asian continent.
印度次大陆与亚洲大陆碰撞,随后渗入南亚。构造块体的碰撞和侵位导致了亚洲大陆的大规模变形。亚洲大陆的构造变形模式在过去的20年里一直是人们争论的焦点。亚洲大陆被认为是一个变形连续体材料或作为一个集合的刚体。在连续介质模型中,由于印度的侵入而在亚洲渗透的物质被青藏高原下的地壳增厚和沿印度沿着的地壳构造旋转吸收。刚体模型强调走滑断层在调节印度与亚洲之间的变形中起着重要作用,断层之间的区域作为刚性块体运动。最近,这两种模式的相对重要性已经通过利用全新世地质记录和GPS数据的大地测量信息确定亚洲大陆的速度场得到了验证。在过去的三年里,我们收集了来自西藏、中南半岛和扬子地块的侏罗纪至古近纪红砂岩。在从西藏东部到华南再到印度支那的广大地区,都观察到了白垩纪后地壳块体的顺时针旋转。印支地块和思茅地块也存在向东南方向的大规模位移。扬子地块、印支地块和思茅地块的古地磁资料为更好地了解亚洲大陆的陆内变形提供了机会。
项目成果
期刊论文数量(24)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Ken,SATO: "TERTIARY PALEOMAGNETIC DATA FROM NORTHW ESTERN YUNNAN.CHNA."Earth Planet.Sci.Lett.. 185. 185-198 (2001)
Ken, SATO:“来自云南北部的第三代古地磁数据。”Earth Planet.Sci.Lett.. 185. 185-198 (2001)
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- 影响因子:0
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- 通讯作者:
Yang, Z., J., Yin, J., Z.Sun, Y.Otofuji, K.Sato: "Discrepant paleomagnetic poles between eastern China and Indochina : a consequence of the extrusion of Indochina"Tectonophys.. 334. 101-113 (2001)
Yang, Z., J., Yin, J., Z.Sun, Y.Otofuji, K.Sato: “中国东部和印度支那之间的古地磁极差异:印度支那挤压的结果”Tectonophys.. 334. 101-
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- 影响因子:0
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Otofuji, Y., T.Matsuda 他: "Internal deformation of Sikhote Alin volcanic belt, Far Eastern Russia, Paleocene paleomagnetic results"Tectonophys.. (in press). (2002)
Otofuji, Y., T.Matsuda 等人:“俄罗斯远东 Sikhote Alin 火山带的内部变形,古新世古地磁结果”Tectonophys..(出版中)。
- DOI:
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- 影响因子:0
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- 通讯作者:
Yang, Z., J.Yin., J., Z.Sun, Y.Otofuji, K.Sato: "Discrepant paleomagnetic poles between eastern China and Indochina : a consequence of the extrusion of Indochina"Tectonophys.. 334. 101-113 (2001)
Yang, Z., J.Yin., J., Z.Sun, Y.Otofuji, K.Sato:“中国东部和印度支那之间的古地磁极差异:印度支那挤压的结果”Tectonophys.. 334. 101-
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- 影响因子:0
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Yokoyama, M., Y.Liu, N.Halim, Y.Otofuji: "Palaeomagnetic study of Upper Jurassic rocks from the from the Sichuan basin : tectonic feature at the latest stage of the collision between the Yangtze craton and the NCB"Earth Planet. Sci. Lett.. 193. 273-285 (2
横山,M.,Y.Liu,N.Halim,Y.Otofuji:“四川盆地上侏罗统岩石的古地磁研究:扬子克拉通与北中巴碰撞最新阶段的构造特征”地球行星
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OTOFUJI Yo-ichiro其他文献
OTOFUJI Yo-ichiro的其他文献
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{{ truncateString('OTOFUJI Yo-ichiro', 18)}}的其他基金
Magnetization process of serpentine
蛇纹石的磁化过程
- 批准号:
23654173 - 财政年份:2011
- 资助金额:
$ 4.8万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
Deformation of a continent
大陆的变形
- 批准号:
22403012 - 财政年份:2010
- 资助金额:
$ 4.8万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Deformation aspect of Asian continent due to continental collision
大陆碰撞导致亚洲大陆变形
- 批准号:
18403012 - 财政年份:2006
- 资助金额:
$ 4.8万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Paleomagnetic study on deformation of the eastern part of the Asian continent
亚洲大陆东部变形的古地磁研究
- 批准号:
14403010 - 财政年份:2002
- 资助金额:
$ 4.8万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Tectonics of eastern margin of the Asian continent
亚洲大陆东缘构造
- 批准号:
09440175 - 财政年份:1997
- 资助金额:
$ 4.8万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Deformation of Asian continent
亚洲大陆变形
- 批准号:
09041109 - 财政年份:1997
- 资助金额:
$ 4.8万 - 项目类别:
Grant-in-Aid for international Scientific Research
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