北京西山房山岩体岩浆底辟构造及其地质意义

何斌; 徐义刚; 王雅玫; 韦必则

Volume 30 Issue 3

May 2005

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HE Bin, XU Yi-gang, WANG Ya-mei, WEI Bi-ze, 2005. Magmatic Diapir of Fangshan Pluton in the Western Hills, Beijing and Its Geological Significance. Earth Science, 30(3): 298-308.

Citation:

HE Bin, XU Yi-gang, WANG Ya-mei, WEI Bi-ze, 2005. Magmatic Diapir of Fangshan Pluton in the Western Hills, Beijing and Its Geological Significance. Earth Science, 30(3): 298-308.

HE Bin, XU Yi-gang, WANG Ya-mei, WEI Bi-ze, 2005. Magmatic Diapir of Fangshan Pluton in the Western Hills, Beijing and Its Geological Significance. Earth Science, 30(3): 298-308.

Citation:

HE Bin, XU Yi-gang, WANG Ya-mei, WEI Bi-ze, 2005. Magmatic Diapir of Fangshan Pluton in the Western Hills, Beijing and Its Geological Significance. Earth Science, 30(3): 298-308.

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Magmatic Diapir of Fangshan Pluton in the Western Hills, Beijing and Its Geological Significance

HE Bin^{1, 2
,},
XU Yi-gang¹,
WANG Ya-mei³,
WEI Bi-ze²

1.
Key Laboratory of Isotope Geochronology and Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
2.
Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China
3.
Institute of Gemology, China University of Geosciences, Wuhan 430074, China

Received Date: 2005-01-11
Publish Date: 2005-05-25

Abstract

Abstract

A study of structures, deformation and strain of country rocks around Fangshan pluton in the western Hills, Beijing, reveals a high-temperature shear aureole, domal distribution of steep lineations and foliations in the thermodynamic aureole, and ring synclines around the pluton. Combining with the analysis of the regional tectonic events, it is concluded that Fangshan pluton is a real magmatic diapir (hot-stokes diapir). To our knowledge, this is the first reported magmatic diapir in the world. As such, this research result argues for a reconsideration of the structural frame and deformational series of the Zhoukoudian area. It is suggested that the Fangshan metamorphic core complex did not exist; the Guandi Archean complex in the margins of the pluton was outcropped by ductile flow of the diapiric ascent; previously proposed Indosinian denudational faults were piercing structures and/or the absence of the strata in the high temperature shear aureole; Taipingshan and Fenghuangshan synclines are ring synclines around the pluton formed by drag of country rocks due to the diapiric ascent.
- the western hills,
- Fangshan pluton,
- magmatic diapir,
- emplacement of pluton,
- Guandi complex,
- metamorphic core complex

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References(46)

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Magmatic Diapir of Fangshan Pluton in the Western Hills, Beijing and Its Geological Significance

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