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

北京西山房山岩体岩浆底辟构造及其地质意义

何斌^{1, 2,},
徐义刚¹,
王雅玫³,
韦必则²

1.
中国科学院广州地球化学研究所同位素年代学和地球化学重点实验室, 广东广州 510640
2.
中国地质大学地球科学学院, 湖北武汉 430074
3.
中国地质大学珠宝学院, 湖北武汉 430074

基金项目:

中国科学院百人计划、创新群体研究科学基金 40421303

中国科学院创新项目 A15041107

详细信息

作者简介:
何斌(1963-), 男, 博士, 副教授, 主要从事构造地质研究.E-mail: hebin@gig.ac.cn

中图分类号: P542
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出版历程
- 收稿日期: 2005-01-11
- 刊出日期: 2005-05-25

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

摘要

摘要: 运用底辟构造的理论和模型, 通过对北京西山房山岩体边缘围岩构造、变形和应变的研究, 厘定出岩体边缘的高温剪切带、周缘向斜、呈穹状分布陡倾的线理和面理, 并结合对西山区域构造事件分析后提出房山岩体为典型的岩浆底辟构造(HotStokesDiapir).这项研究成果不仅在世界上首次证实了岩浆底辟的存在, 而且对理清北京西山地区的地质构造格架和演化序列具有十分重要的意义.研究认为房山地区可能不存在变质核杂岩; 房山岩体边缘的关坻太古宙杂岩是基底岩石随岩体底辟流动上升带到地壳上部的; 原先确定的一些印支期“剥离断层”是房山岩体岩浆底辟的刺穿构造或围岩高温剪切作用造成的地层缺失; 太平山和凤凰山等向斜是岩体底辟过程中在围岩拖曳下形成的周缘向斜.
- 北京西山 /
- 房山岩体 /
- 岩浆底辟 /
- 岩体侵位机制 /
- 关坻杂岩 /
- 变质核杂岩
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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图 1 北京西山房山岩体区域地质构造

1.第四系; 2.白垩系; 3.侏罗系; 4.三叠系; 5.石炭—三叠系; 6.寒武系—奥陶系; 7.青白口系; 8.蓟县系; 9.长城系; 10.太古宙; 11.花岗岩; 12.逆断层; 13.剥离断层; 14.向斜

Fig. 1. Regional geological sketch map of Fangshan pluton in the western hills, Beijing

下载: 全尺寸图片幻灯片

图 2 北京西山房山岩体地质构造(据马昌前(1988)和张吉顺和李志忠(1990)修改)

1.石英闪长岩; 2.中粒花岗闪长岩; 3.斑状花岗闪长岩; 4.巨斑状花岗闪长岩; 5.强变形带; 6.高温剪切带; 7.应变椭球体

Fig. 2. Geological and structural sketch map of Fangshan pluton in the western hills, Beijing

下载: 全尺寸图片幻灯片

图 3 房山岩体北缘南观地区地质简图

1.上第三系; 2.长城系; 3.亮甲山组; 4.黄院组; 5.张夏组; 6.徐庄组; 7.馒毛组; 8.府君山组; 9景儿峪组; 10.龙山组; 11.下马岭组; 12.关坻杂岩; 13.拉伸线理; 14小褶皱枢纽; 15.劈理产状

Fig. 3. Simplified geological map of the Nanguan area in the north of Fangshan pluton

下载: 全尺寸图片幻灯片

图 4 房山岩体围岩热动力变质带的联合构造剖面(据1∶5万周口店幅区域地质调查报告修改)

1.构造片麻岩; 2.构造片岩; 3.变余糜棱岩; 4.千枚岩或板岩; 5.条带状大理岩; 6.灰岩或泥灰岩; 7.花岗闪长岩

Fig. 4. Structural sections of thermodynamic aureole around the Fangshan pluton

下载: 全尺寸图片幻灯片

图 5 房山岩体围岩周缘向斜联合剖面(据1∶5万周口店幅区域地质调查报告修改)

1.角岩; 2.砂岩; 3.千枚岩或板岩; 4.砾岩; 5.变质砂岩; 6.灰岩; ∈₃h.黄院组; O₁m.马家沟组; C₂b.本溪组; C₂t.太原组; P₁s.山西组; P₂y.杨家组; P₂h.红庙岭组; T₁s.双泉组

Fig. 5. Ring synclines of country rock around the Fangshan pluton

下载: 全尺寸图片幻灯片

图 6 房山岩体岩浆底辟模型图

Fig. 6. Model of magmatic diapir of Fangshan pluton

下载: 全尺寸图片幻灯片

表 1 岩浆底辟、气球膨胀的鉴定特征及与房山岩体侵位特征的对比

Table 1. Characteristics of magmatic diapir and ballooning, and their comparison with the Fangshan pluton

参考文献(46)

Bateman, R., 1984. On the role of deformation in the segregation, ascent and final emplacement of granitoids: The Cannibal Greek granite. Tectonophysics, 10: 211-231.
Berner, H., Ramberg, H., Stephansson, O., 1972. Diapirism in theory and experiment. Tectonophysics, 15: 197-218. doi: 10.1016/0040-1951(72)90085-6
Bureau of Geology and Mineral Resources of Beijing, 1991. Regional geology of Beijing. Geological Publishing House, Beijing, 598(in Chinese).
Brown, M., 1994. The generation, segregation, ascent and emplacement of granite magma: The migmatite-to-crustally-derived granite connection in the thickened orogens. Earth Science Reviews, 36: 83-100. doi: 10.1016/0012-8252(94)90009-4
Castro, A., 1987. On granitoid emplacement and related structures, a review. Geol. Rundcsh. , 76(1): 101-124. doi: 10.1007/BF01820576
Clemens, J.D., 1998. Observations on the origins and ascent mechanisms of granitic magmas. J. Geol. Soc. London, 155: 843-851. doi: 10.1144/gsjgs.155.5.0843
Carlson, C., 1984. Stratigraphic and structural significance of foliated serpentinite breccias, Wilber Springs. Society of Economic Paleotonologists and Mineralogists, Field Guild 3, 108-112.
Davis, G.A., Zheng, Y.D., Wang, C., et al., 2001. Mesozoic tectonic evolution of the Yanshan fold and thrust belt, with emphasis on Hebei and Liaoning provinces, northern China. In: Hedrix, M.S., Davis, G.A., eds., Paleozoic and Mesozoic tectonic evolution of central Asia; From continental assembly to intracontinental deformation: Boulder, Colorado. Geological Society of America Memoir, 194: 171-197.
Dixon, J.M., 1975. Finite strain and progressive deformation in models of diapiric structures. Tectonophysics, 28: 89-124. doi: 10.1016/0040-1951(75)90060-8
England, R.W., 1990. The identification of granitic diapers. J. Geol. Soc. London, 147: 931-933. doi: 10.1144/gsjgs.147.6.0931
Grout, F.F., 1945. Scale models of structures related to batholiths. American Journal of Science, 243A: 260-284.
Jackson, M. P. A., Talbot, C. J., 1986. External shapes, strain rates, and dynamics of salt structures. GSA Bulletin, 97: 305-323. doi: 10.1130/0016-7606(1986)97<305:ESSRAD>2.0.CO;2
Johnson, S.E., Fletcher, J.M., Fanning, C.M., et al., 2003. Structure, emplacement and lateral expansion of the San Jose tonalite pluton, Peninsular Ranges batholith, Baja California, Mexico. J. Struc. Geol. , 25: 1933-1957. doi: 10.1016/S0191-8141(03)00015-4
Lu, F.X., Sang, L.K., 2002. Petrology. Geological Publishing House, Beijing, 399(in Chinese).
Ma, C. Q., 1988. The magma-dynamic mechanism of emplacement and compositional zonation of the Zhoukoudian stock, Beijing. Acta Geologica Sinica, 62(4): 329-341(in Chinese with English abstract).
Ma, C.Q., Wang, R.J., Yang, K.G., 1996. Magmatic thermodynamic structures of the Zhoukoudian granodioritic intrusion in the western hills of Beijing, Field trip guide of 30th International Geological Congress. Geological Publishing House, Beijing.
Marsh, B.D., 1982. On the mechanics of igneous diapirism, stoping and zone melting. American Journal of Science, 282: 808-855. doi: 10.2475/ajs.282.6.808
Miller, R.B., Paterson, S.R., 1999. In defense of magmatic diapers. J. Struc. Geol. , 21: 1161-1173. doi: 10.1016/S0191-8141(99)00033-4
Mrazec, M.L., 1915. Les plis diapirs et le diaprisme en general. Rumania Institute de Geologie Comptes Rendus, 4: 226-270.
Paterson, S.R., Flower, T.R. Jr., 1993. Re-examining pluton emplacement processes. J. Struc. Geol. , 15: 191-206. doi: 10.1016/0191-8141(93)90095-R
Paterson, S.R., Vernon, R.H., 1995. Bursting the bubble of ballooning plutons: A return to nested diapirs emplaced by multiple processes. Geol. Soc. Amer. Bull. , 107: 1356-1380. doi: 10.1130/0016-7606(1995)107<1356:BTBOBP>2.3.CO;2
Peng, S.M., Song, H.L., 1991. The finite strain analysis and its significance in the Beijing syncline, Xishan, Beijing. Journal of Guilin College of Geology, 11(3): 260-268(in Chinese with English abstract).
Petford, N., 1996. Dykes and diapirs? Transactions of the Royal Society of Edinburgh. Earth Sciences, 87: 105-114.
Ramberg, H., 1981. Gravity, deformation and the Earth's crust. In: Theory, experiments and geological application. Academic Press, London.
Schmeling, H., Cruden, A. R., Marquart, G., 1988. Finite deformation in and around a fluid sphere moving through a viscous medium: Implication for diapiric ascent. Tectonophysics, 149: 17-34. doi: 10.1016/0040-1951(88)90116-3
Shan, W.L., Zhang, J.S., Song, H.L., et al., 1990. The tectonic evolution in the southern part of western-hill, Beijing. In: Zhang J.S., Shan, W.L., eds., The geological study of Xishan, Beijing. China University of Geosciences Press, Wuhan, 1-8(in Chinese).
Song, H. L., 1987. A primary analysis on the tectonic sequence in the southern part of the west hill, Beijing. Earth Science—Journal of Wuhan College of Geology, 12(1): 15-20(in Chinese with English abstract).
Song, H.L., 1996. Characteristics of Fangshan metamorphic core complex, Beijing and a discussion about its origin. Geoscience, 10(2): 147-158(in Chinese with English abstract).
Wang, F.Z., Chen, N.S., 1996. Regional and thermodynamic metamorphism of the western hills of Beijing. Field trip guide of 30th International Geological Congress. Geological Publishing House, Beijing.
Wang, T., Wang, X.X., Li, W.P., 2000. Evaluation of multiple emplacement mechanisms: The Huichizi granite pluton, Qinling orogenic belt, central China. J. Struc. Geol. , 22: 505-518. doi: 10.1016/S0191-8141(99)00169-8
Wang, T., Wang, X.X., Li, W.P., 1999. Multiple emplacement mechanism and space of granitoid plutons. Geological Review, 45(2): 142-150(in Chinese with English abstract).
Wei, B.Z., Song, H.L., 1990. Fangshan metamorphic core complexes structure, Beijing. In: Zhang, J. S., Shan, w. L., eds., The geological study of Xishan, Beijing. China University of Geosciences Press, Wuhan, 42-47(in Chinese).
Weinberg, R. F., 1994. Re-examining pluton emplacement processes: Discussion. J. Struc. Geol. , 16(5): 743-746. doi: 10.1016/0191-8141(94)90125-2
Weinberg, R.F., Podladchikov, Y., 1994. Diapiric ascent of magmas through power law crust and mantle. J. Geophy. Res. , 99: 9543-9560. doi: 10.1029/93JB03461
Whitehead, J.A., Helfrich, K. R., 1991. Instability of flow with temperature-dependent viscosity: A model of magma dynamics. J. Geophy. Res. , 96: 4145-4155. doi: 10.1029/90JB02342
Zhang, J.S., Li, Z.Z., 1990. Emplacement deformations and ballooning mechanism about Fangshan granodiorite pluton, Beijing. In: Zhang, J.S., Shan, W.L., eds., The geological study of Xishan, Beijing. China University of Geosciences Press, Wuhan, 48-63(in Chinese).
北京市地质矿产局, 1991. 北京市区域地质志. 北京: 地质出版社, 598.
路风香, 桑龙康, 2002. 岩石学. 北京: 地质出版社, 399.
马昌前, 1988. 北京周口店岩株侵位和成分分带的岩浆动力学机理. 地质学报, 62 (4): 329-341. https://www.cnki.com.cn/Article/CJFDTOTAL-DZXE198804004.htm
彭少梅, 宋鸿林, 1991. 北京西山北岭向斜的有限应变分析及其意义. 桂林冶金地质学院学报, 11 (3): 260-268. https://www.cnki.com.cn/Article/CJFDTOTAL-GLGX199103004.htm
单文琅, 张吉顺, 宋鸿林, 等, 1990. 北京西山南部的构造演化. 见: 张吉顺, 单文琅编, 北京西山地质研究. 武汉: 中国地质大学出版社, 1-8.
宋鸿林, 1987. 北京西山南部构造序列初探. 地球科学———武汉地质学院学报, 12 (1): 15-20. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX198701002.htm
宋鸿林, 1996. 北京房山变质核杂岩的基本特征及成因探讨. 现代地质, 10 (2): 147-158. https://www.cnki.com.cn/Article/CJFDTOTAL-XDDZ602.001.htm
王涛, 王晓霞, 李伍平, 1999. 试论花岗质深成岩体的复合定位机制及定位空间问题. 地质论评, 45 (2): 142-150. https://www.cnki.com.cn/Article/CJFDTOTAL-DZLP199902007.htm
韦必则, 宋鸿林, 1990. 北京房山变质核杂岩构造. 见: 张吉顺, 单文琅编, 北京西山地质研究. 武汉: 中国地质大学出版社, 42-47.
张吉顺, 李志忠, 1990. 北京房山花岗闪长岩体的侵位变形构造及气球膨胀式侵位机制. 见: 张吉顺, 单文琅编, 北京西山地质研究. 武汉: 中国地质大学出版社, 48-63.