Geochemistry of the volcanic rock association from Lianghe area in Mianlue suture zone, southern Qinling and its tectonic significance.

	Geochemistry of the volcanic rock association from Lianghe area in Mianlue suture zone, southern Qinling and its tectonic significance.
	Lai, SC; Zhang, GW; Yang RY(杨瑞英); Yang, RY
刊名	ACTA PETROLOGICA SINICA
	2000
卷号	16 期号:3 页码:317-326
关键词	volcanic rock geochemistry petrotectonics Mianlue suture zone
其他题名	南秦岭勉略带两河弧内裂陷火山岩组合地球化学及其大地构造意义
通讯作者	NW Univ Xian, Dept Geol, Xian 710069, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Beijing 100080, Peoples R China
英文摘要	The volcanic rock slab in Lianghe area is located in the boundary tectonic zone: Bashan arcuate tectonic melange between Qinling microplate and Yangtze plate. The rocks consisted of subalkaline tholeiitic basalt and calc-alkaline dacitic rhyolite. Both of the basalt and dacitic rhyolite exhibit the typical geochemical features of high content of element Bar low content of elements Th and U. remarkable depletion of element Nb, Ta and Ti. Especially, the Th/Yb-Ta/Yb and Ti/Zr-Ti/Y features of the basalt indicate that the volcanic rock association in the studied area developed in a special tectonic setting which belongs to a rift valley within an island-arc. The volcanic rock association in the studied area was the result of magmatism that due to the ancient oceanic crust subduction and rift valley development within the island-arc during the evolutionary process of Mianlue ancient ocean basin at Middle Paleozoic-Early Mesozoic era. This volcanic rock block should be an important evidence which indicates that the Mianxian-Lueyang suture zone had extended to the Bashan arcuate area.
学科主题	Geology
类目[WOS]	Geology
研究领域[WOS]	Geology
原文出处	SCI
语种	英语
WOS记录号	WOS:000089084300002
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/236939]
专题	高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Lai, SC,Zhang, GW,Yang RY,et al. Geochemistry of the volcanic rock association from Lianghe area in Mianlue suture zone, southern Qinling and its tectonic significance.[J]. ACTA PETROLOGICA SINICA,2000,16(3):317-326.
APA	Lai, SC,Zhang, GW,杨瑞英,&Yang, RY.(2000).Geochemistry of the volcanic rock association from Lianghe area in Mianlue suture zone, southern Qinling and its tectonic significance..ACTA PETROLOGICA SINICA,16(3),317-326.
MLA	Lai, SC,et al."Geochemistry of the volcanic rock association from Lianghe area in Mianlue suture zone, southern Qinling and its tectonic significance.".ACTA PETROLOGICA SINICA 16.3(2000):317-326.