Zircon Hf Isotope Mapping for Understanding Crustal Architecture and Its Controls on Mineralization during Early Cretaceous in the Southern Great Xing'an Range, NE China

扫码查看

原文链接

NETL
NSTL
万方数据

外文摘要：Voluminous Early Cretaceous granitoids and associated large-scale ore deposits are distributed within the southern Great Xing'an Range (SGXR), NE China. Based on previously published geochronology and zircon Hf-isotope data, Hf isotope mapping is undertaken to improve our understanding of crustal architecture and its controls on ore deposits. The ore-related Early Cretaceous granitoids were sourced predominantly from juvenile crust, with the involvement of variable proportions of ancient crustal materials. The crustal architecture, as inferred from Hf isotopic contour maps, indicates two distinct Hf isotopic domains in SGXR, including (1) a higher-εHf (+7 to +11) juvenile crust containing minor ancient crustal material, and (2) a lower-εHf (+2 to +6) juvenile crust containing a greater proportion of ancient crustal materials.The Hf isotopic maps identify links between crustal architecture and regional metallogeny. Copper deposits and other deposits with significant Cu production are restricted mainly to the higher-εHf juvenile crustal regions in the northern and eastern SGXR. Deposits dominated by other metals (e.g., Mo, Sn, W, Pb, Zn, and Ag) occur mainly in the lower-εHf juvenile crustal regions in the southern and western SGXR. Interaction between juvenile crust-derived melts and ancient crustal components played an important role on the distribution of various ore metals.

外文关键词：

Hf isotope mappingcrustal architecturelarge-scale Early Cretaceous granitoidsdistribution of ore depositssouthern Great Xing'an Rangezircon

作者：

Feng Yuan、Huanan Liu、Shengjin Zhao、Mingjing Fan

展开 >

作者单位：

State Key Laboratory of Geological Processes and Mineral Resources,Collaborative Innovation Center for Exploration of Strategic Mineral Resources,School of Earth Resources,China University of Geosciences,Wuhan 430074,China

State Key Laboratory of Geological Processes and Mineral Resources,School of Earth Sciences and Resources,China University of Geosciences,Beijing 100083,China

No. 10 Institute of Geological Exploration,Inner Mongolia Bureau of Geology and Mineral Resources,Chifeng 024000,China

Key Laboratory of Metallogeny and Mineral Assessment,Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China

展开 >

基金：

National Natural Science Foundation of ChinaChina Postdoctoral Science FoundationProgram of China Geological Survey Bureau

项目编号：

419030432018M642948DD20160048-15

出版年：

2024

DOI：

10.1007/s12583-020-1100-9

地球科学学刊(英文版)