北秦岭弧后盆地俯冲消减与陆壳物质再循环——桃园岩体和黄岗杂岩体的地球化学证据

张利; 王林森; 周炼

Volume 26 Issue 1

Jan. 2001

Turn off MathJax

Article Contents

Article Navigation > Earth Science > 2001 > 26(1): 18-24

ZHANG Li, WANG Lin-sen, ZHOU Lian, 2001. SUBDUCTION OF BACK-ARC BASIN AND RECYCLING OF CRUSTAL SUBSTANCE IN NORTHERN QINLING: GEOCHEMICAL EVIDENCE OF TAOYUAN INTRUSION AND HUANGGANG INTRUSIVE COMPLEX. Earth Science, 26(1): 18-24.

Citation:

PDF( 787 KB)

SUBDUCTION OF BACK-ARC BASIN AND RECYCLING OF CRUSTAL SUBSTANCE IN NORTHERN QINLING: GEOCHEMICAL EVIDENCE OF TAOYUAN INTRUSION AND HUANGGANG INTRUSIVE COMPLEX

Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China

Received Date: 2000-05-28
Publish Date: 2001-01-25

Abstract

Abstract

Major and trace element compositions and isotopic compositions for Taoyuan intrusion and Huanggang intrusive complex are presented in this paper. The geochemical research into the Taoyuan intrusion and Huanggang intrusive complex in the Caledonian stage, north of Tongbai shows that the Taoyuan granitic magma derived from the depleted mantle are similar to the Erlangping basic volcanic magma. The Taoyuan granites that occurred in the back-arc basin related to the subdcution of the ocean plate originated from the same magma as those of Erlangping basic volcanic rocks. The Huanggang intrusive complex, closely related to the northward subduction of the Erlangping back-arc basin, was formed in the island-arc tectonic environment. The magmas of Huanggang are mixed with a certain percentage of continental crustal substances, products of the partial melting of the mantle wedge enhanced by the fluid extracted from the subducted slab and the overlying crustal substance in the subduction process.
- back-arc basin subduction,
- recycling of crustal substance,
- Taoyuan intrusion,
- Huanggang intrusive complex,
- geochemisty,
- northern Qinling

FullText(HTML)

References(13)

References

[1]	张国伟, 孟庆任, 于在平, 等. 秦岭造山带的造山过程及其动力学特征[J]. 中国科学(D辑), 1996, 26(3): 194-195. https://www.cnki.com.cn/Article/CJFDTOTAL-JDXK199603000.htm
[2]	张本仁, 骆庭川, 高山, 等. 秦巴岩石圈构造及成矿规律地球化学研究[M]. 武汉: 中国地质大学出版社, 1994. 446.
[3]	孙勇, 卢欣祥, 韩松, 等. 北秦岭早古生代二郎坪蛇绿岩片的组成和地球化学[J]. 中国科学(D辑), 1996, (增刊): 49-55. https://www.cnki.com.cn/Article/CJFDTOTAL-JDXK1996S1007.htm
[4]	Xue F, Kroner A, Reischmann T, et al. Paleozoic pre-and post-collision calcalkaline magmatism in the Qinling orogenic belt, central China, as documented by zircon ages on granitoid rocks[J]. Journal of Geological Society, 1996, 153(3): 409 -417. doi: 10.1144/gsjgs.153.3.0409
[5]	SunW, Li S. Comment on: Pb isotopes of granitoids suggest Devonian accretion of Yangtze(South China) craton to North China craton[J]. Geology, 1998, 26(9): 859-860. doi: 10.1130/0091-7613(1998)026<0859:PIOGSD>2.3.CO;2
[6]	张宏飞, 张利, 高山, 等. 桐柏地区变质杂岩和侵入岩类Pb同位素组成特征及其地质意义[J]. 地球科学———中国地质大学学报, 1999, 24(3): 269-273. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX903.011.htm
[7]	卢欣祥, 肖庆辉, 董有, 等. 秦岭花岗岩大地构造图[Z]. 西安: 地图出版社, 1998. 16.
[8]	Pearce J A, Harriss N B W, Tindle A G. Trace element discrimination diagrams for the tectonic interpretation of granitic rocks[J]. Journal of Petrology, 1984, 25: 956-983. doi: 10.1093/petrology/25.4.956
[9]	Faure G. Principles of isotope geology[M]. [s. l. ]: Wiley, 1986. 299.
[10]	张宗清, 刘敦一, 付国民. 北秦岭变质地层同位素年代学研究[M]. 北京: 地质出版社, 1994. 199.
[11]	Forster H J, Tischendorf G, Trumbull R B. An evaluation of the Rb vs. (Y+ Nb)discrimination diagram to infer tectonic setting of sillicic igneous rocks[J]. Lithos, 1997, 40: 261-293. doi: 10.1016/S0024-4937(97)00032-7
[12]	Zhang L, Zhang H F. Huanggang intrusive complex in northern Tongbai area: island-arc tectonic environment and its geological significance[J]. Journal of China University of Geosciences, 1998, 9(3): 223-227.
[13]	Nelson D R. Isotopic characteristics of potassic rocks: evidence for the involvement of subducted sediments in magma genesis[J]. Lithos, 1992, 26: 408-420.