地质科学2017，Vol.52Issue(4)：1263-1281,19.DOI:10.12017/dzkx.2017.078
东天山黄土坡铜锌矿床成矿流体的氩-氩同位素示踪
Helium and argon isotope characteristics of ore-forming fluids for the Huangtupo copper-zinc deposit, eastern Tianshan
摘要
Abstract
The Huangtupo middle copper-zinc deposit is located at the central part of Kalatage copper polymetallic belt in eastern Tianshan.This deposit belongs to volcanic hosted massive sulfide deposit (VHMS) or volcanogenic massive sulfide deposit (VMS),which is hosted in the Early Silurian marine volcaniclastic-sedimentary sequence.The ore bodies are hosted in intermediate volcanic breccias and felsic tuff assemblages with massive orebody at the upper and vein orebody at the lower part.The structures of ores are massive,disseminated,banded and veinlet.This paper reports He and Ar isotopic data of fluid inclusions trapped by pyrites.3He/4He ratios range from 0.11 to 0.94 Ra with He derived from mantle varying from 1.71％ to 10.97％.40Ar/36Ar ratios range from 301.40 to 425.98 with 40Ar* content from 1.96％ to 30.63％.Combining inclusions assemblages,hydrogen,oxygen and sulfur isotopic characteristics of the Huangtupo copper-zinc deposit,it can be concluded that the mantlederived fluids and seawater containing crustal 4He and atmospheric Ar were involved in the mineralization,and the seawater is dominated.关键词
He-Ar同位素/成矿流体/铜锌矿/黄土坡/卡拉塔格Key words
He-Ar isotope/Ore-forming fluids/Copper-zinc deposit/Huangtupo/Kalatage分类
天文与地球科学引用本文复制引用
柴凤梅,许强奋,王雯,王海培..东天山黄土坡铜锌矿床成矿流体的氩-氩同位素示踪[J].地质科学,2017,52(4):1263-1281,19.基金项目
国家自然科学基金联合项目(编号:U1403391)和国家重点研发计划项目(编号:2017YFC0601201)资助. （编号:U1403391）
