Geochronology, fluid inclusions and isotopic characteristics of the   Chaganbulagen Pb-Zn-Ag deposit, Inner Mongolia, China

doi:10.1016/j.lithos.2016.04.029

CORC > 北京大学 > 地球与空间科学学院

	Geochronology, fluid inclusions and isotopic characteristics of the Chaganbulagen Pb-Zn-Ag deposit, Inner Mongolia, China
	Li, Tiegang ; Wu, Guang ; Liu, Jun ; Wang, Guorui ; Hu, Yanqing ; Zhang, Yunfu ; Luo, Dafeng ; Mao, Zhihao ; Xu, Bei
刊名	LITHOS
	2016
关键词	Sericite Ar-40-Ar-39 age Zircon U-Pb age Fluid inclusion H-O-S-Pb isotopes Chaganbulagen Pb-Zn-Ag deposit Inner Mongolia HYDROTHERMAL ORE-DEPOSITS COPPER-MOLYBDENUM DEPOSIT GREAT XINGAN RANGE GEOLOGICAL SIGNIFICANCE TECTONIC IMPLICATIONS MANZHOULI AREA VOLCANIC-ROCKS OROGENIC BELT ERGUNA MASSIF GOLD DEPOSITS
DOI	10.1016/j.lithos.2016.04.029
英文摘要	The large Chaganbulagen Pb-Zn-Ag deposit is located in the Derbugan metallogenic belt of the northern Great Xing'an Range. The vein-style orebodies of the deposit occur in the NWW-trending fault zones. The ore forming process at the deposit can be divided into three stages: an early quartz-pyrite-arsenopyritepyrrhotite-sphalerite-galena-chalcopyrite stage, a middle quartz-carbonate-pyrite-sphalerite-galena-silverbearing minerals stage, and a late quartz-carbonate-pyrite stage. The sericite sample yielded a Ar-40-Ar-39 plateau age of 138 +/- 1 Ma and an isochron age of 137 +/- 3 Ma, and the zircon LA-ICP-MS U-Pb age of monzogranite porphyry was 143 +/- 2 Ma, indicating that the ages of mineralization and monzogranite porphyry in the Chaganbulagen deposit should be the Early Cretaceous, and that the mineralization should be slightly later than the intrusion of monzogranite porphyry. There are only liquid inclusions in quartz veins of the Chaganbulagen deposit. Homogenization temperatures, densities, and salinities of the fluid inclusions from the early stage are 261-340 degrees C, 0.65-0.81 g/cm(3), and 0.7-63 wt.% NaCl eqv., respectively. Fluid inclusions of the middle stage have homogenization temperatures, densities, and salinities of 209-265 degrees C, 0.75-0.86 g/cm(3), and 0.5-5.7 wt.% NaCl eqv., respectively. For fluid inclusions of the late stage, their homogenization temperatures, densities, and salinities are 173-219 degrees C, 0.85-0.91 g/cm(3), and 0.4-2.7 wt.% NaCl eqv., respectively. The ore forming fluids of the deposit are generally characterized by moderate temperature and low salinity and density, and belong to an H2O-NaCl +/- CO2 +/- CH4 system. The delta O-18(water) values calculated for ore-bearing quartz vary from -17.9% to -10.8%, and the delta DV-SMOW values from bulk extraction of fluid inclusion waters vary from -166%0 to -127%, suggesting that the ore-forming fluids consist dominantly of meteoric water. The 834S(V-CDT) values range from 1.4% to 4.1L. The Pb-206/Pb-204, Pb-207/Pb-204, and Pb-208/Pb-204 values of the ore minerals are in the ranges of 18.302-19.037, 15.473-15.593, and 38.110-38.945, respectively. The data for the S and Pb isotopic systems indicate that the ore-forming metals and sulfur came from Mesozoic magma. The Chaganbulagen deposit is a low-sulfidation epithermal Pb-Zn-Ag deposit, and the temperature decrease is the dominant mechanism for the deposition of ore-forming materials. (C) 2016 Elsevier B.V. All rights reserved.; Major State Basic Research Program of the People's Republic of China (Chinese National 973 Program) [2013CB429805]; Inner Mongolia Geological Exploration Foundation [201501YS01]; Research Program of the Yunnan Chihong Zinc & Germanium Limited Liability Company [201107ZKJS-01]; SCI(E); ARTICLE; wuguang65@163.com; ,SI; 340-355; 261
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/447963]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Li, Tiegang,Wu, Guang,Liu, Jun,et al. Geochronology, fluid inclusions and isotopic characteristics of the Chaganbulagen Pb-Zn-Ag deposit, Inner Mongolia, China[J]. LITHOS,2016.
APA	Li, Tiegang.,Wu, Guang.,Liu, Jun.,Wang, Guorui.,Hu, Yanqing.,...&Xu, Bei.(2016).Geochronology, fluid inclusions and isotopic characteristics of the Chaganbulagen Pb-Zn-Ag deposit, Inner Mongolia, China.LITHOS.
MLA	Li, Tiegang,et al."Geochronology, fluid inclusions and isotopic characteristics of the Chaganbulagen Pb-Zn-Ag deposit, Inner Mongolia, China".LITHOS (2016).