Uprising period and elevation of the Wenyu granitic pluton in the Xiaoqinling District, Central China

IMR OpenIR

	Uprising period and elevation of the Wenyu granitic pluton in the Xiaoqinling District, Central China
其他题名	Uprising period and elevation of the Wenyu granitic pluton in the Xiaoqinling District, Central China
	Yu XinQi 1; Liu JunLai 1; Zhang DeHui 1; Zheng Yong 2; Li ChunLin 1; Chen ShuaiQi 1; Li Tan 3
	2013
发表期刊	CHINESE SCIENCE BULLETIN
ISSN	1001-6538
卷号	58 期号:35 页码:4459-4471
摘要	Xiaoqinling District is an important gold-producing area in China. It ranks second to Jiaodong with regard to gold deposits. The uprising period of the Wenyu granitic pluton and the wall-rocks of the deposit, as well as the mineralizing depth and reserved place of gold ore bodies, are significant to ore exploration. Fission-track (FT) analysis of zircons and apatites of granitic rocks from the Wenyu granitic pluton shows that apatite FT (AFT) data modeling indicates a rapid cooling rate of 20A degrees C/Ma from 138 to 120 Ma after emplacement at 138 Ma. Thermal evolution and inversion curves suggest a secondary phase of fast cooling and uprising from 45 to 35 Ma, and 35 Ma, respectively, with a cooling rate of 6.7A degrees C/Ma and a denudation quantity of similar to 4.3 km. The last cooling phase took place from < 4 Ma, with an average cooling rate of similar to 11.3A degrees C/Ma and a denudation amount of 1.3 km. Total exhumation quantity of 5.6 km and uprising elevation of 7.3 km are similar to the estimated results of fluid inclusions from the Dongtongyu and Wenyu gold deposits. The Ar-39/Ar-40 dating of sericite from the fault planes of the Xunmadao-Xiaohe and Taiyao faults demonstrate two uprising activities of the ore-host metamorphic complex. The Huashan and Wenyu granitic plutons intensively occurred during 77 and 45 Ma, respectively. These data sets are valuable for understanding the uplifting process and for preserving gold ore bodies in the Xiaoqinling area, as well as for further studies on tectonic evolutions of the Taihua Complex and the Qinling-Dabie Orogen.
其他摘要	Xiaoqinling District is an important gold-producing area in China. It ranks second to Jiaodong with regard to gold deposits. The uprising period of the Wenyu granitic pluton and the wall-rocks of the deposit, as well as the mineralizing depth and reserved place of gold ore bodies, are significant to ore exploration. Fission-track (FT) analysis of zircons and apatites of granitic rocks from the Wenyu granitic pluton shows that apatite FT (AFT) data modeling indicates a rapid cooling rate of 20A degrees C/Ma from 138 to 120 Ma after emplacement at 138 Ma. Thermal evolution and inversion curves suggest a secondary phase of fast cooling and uprising from 45 to 35 Ma, and 35 Ma, respectively, with a cooling rate of 6.7A degrees C/Ma and a denudation quantity of similar to 4.3 km. The last cooling phase took place from < 4 Ma, with an average cooling rate of similar to 11.3A degrees C/Ma and a denudation amount of 1.3 km. Total exhumation quantity of 5.6 km and uprising elevation of 7.3 km are similar to the estimated results of fluid inclusions from the Dongtongyu and Wenyu gold deposits. The Ar-39/Ar-40 dating of sericite from the fault planes of the Xunmadao-Xiaohe and Taiyao faults demonstrate two uprising activities of the ore-host metamorphic complex. The Huashan and Wenyu granitic plutons intensively occurred during 77 and 45 Ma, respectively. These data sets are valuable for understanding the uplifting process and for preserving gold ore bodies in the Xiaoqinling area, as well as for further studies on tectonic evolutions of the Taihua Complex and the Qinling-Dabie Orogen.
关键词	APATITE-FISSION-TRACK U-PB EXHUMATION HISTORY QINLING OROGEN ANNEALING KINETICS TECTONIC EVOLUTION DATING CALIBRATION TAIHUA COMPLEX GEOCHRONOLOGY ZIRCON apatite fission track Ar-39/Ar-40 dating uplift and exhumation Wenyu granitic pluton metamorphic complex
收录类别	CSCD
语种	英语
资助项目	[National Natural Science Foundation of China]
CSCD记录号	CSCD:5019433
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/154671
专题	中国科学院金属研究所
作者单位	1.China University Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China 2.中国科学院 3.中国科学院金属研究所
推荐引用方式 GB/T 7714	Yu XinQi,Liu JunLai,Zhang DeHui,et al. Uprising period and elevation of the Wenyu granitic pluton in the Xiaoqinling District, Central China[J]. CHINESE SCIENCE BULLETIN,2013,58(35):4459-4471.
APA	Yu XinQi.,Liu JunLai.,Zhang DeHui.,Zheng Yong.,Li ChunLin.,...&Li Tan.(2013).Uprising period and elevation of the Wenyu granitic pluton in the Xiaoqinling District, Central China.CHINESE SCIENCE BULLETIN,58(35),4459-4471.
MLA	Yu XinQi,et al."Uprising period and elevation of the Wenyu granitic pluton in the Xiaoqinling District, Central China".CHINESE SCIENCE BULLETIN 58.35(2013):4459-4471.