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地质力学学报:2019,25(1):61-76
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福建紫金山矿田早白垩世以来构造演化和成岩成矿时空格架
(1.中国地质科学院岩溶地质研究所, 广西 桂林 541004;2.自然资源部广西岩溶动力学重点实验室, 广西 桂林 541004;3.中国地质大学(北京) 地球科学与资源学院, 北京 100083)
THE EARLY-CRETACEOUS TECTONIC EVOLUTION AND THE SPATIAL-TEMPORAL FRAMEWORK OF MAGMATISM-MINERALIZATION IN ZIJINSHAN ORE-FIELD, FUJIAN PROVINCE
(1.Institute of Karst Geology, CAGS, Guilin 541004, Guangxi, China;2.Key Laboratory of Karst Dynamics, MNR & GZAR, Guilin 541004, Guangxi, China;3.School of Earth Sciences and Resources, China University of Geosciences(Beijing), Beijing 100083, China)
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投稿时间:2017-10-10    修订日期:2018-05-22
中文摘要: 在充分吸收已有工作成果的基础上,文章系统总结了紫金山矿田的典型矿床类型及特征,探讨了早白垩世伸展构造背景下该矿田成岩成矿作用与北西向上杭—云霄成矿带的关系,并建立了早白垩世(145 Ma~)到晚白垩世早期(~92 Ma)紫金山矿田成岩成矿作用的时空格架。研究认为由于古太平洋板块俯冲作用体系的影响,早白垩世以来(145 Ma~)紫金山矿田总体上受北西向上杭—云霄深断裂多次活化作用的控制,依次经历了145~120 Ma伸展初期小规模的岩浆—成矿活动、125~110 Ma短暂的岩浆间歇期、110~92 Ma幔源物质大规模参与的岩浆活动及相应的斑岩型—浅成低温热液型(Cu-Au-Mo-Ag)多金属成矿作用。
Abstract:This paper presents a systematic review of major types and characteristics of the representative deposits in the Zijinshan ore-field by integrating with previous studies, which is in an attempt to establish the spatial-temporal framework of magmatic-metallogenic events during 145~92 Ma time interval and, on that basis, investigate its relationship with the NW-trending Shanghang-Yunxiao mineralization belt under the Early Cretaceous extension setting. We conclude that the magmatism-mineraliztion of the Zijinshan ore-field was mainly controlled by the multiple activation of the NW-trending Shanghang-Yunxiao deep fault in response to Pacific plate subduction. There occurred a small scale of the magmatism and metallogenesis in the Zijinshan ore-field when the regional tectonic regime inversed from compression to extension (145~125 Ma), whereas the intense crust-mantle interaction induced large scale of magmatism and mineralization during the 110~92 Ma in response to the enhanced crust extension, which resulted in generating the giant Zijinshan porphyry-epithermal Cu-Au-Mo-Ag ore system. It's worth noting that a transient tectonic inversion lasted from 125~110 Ma separated the two extension stage mentioned above. These transpression gave rise to the short magmatic quiescence in our study area.
文章编号:     中图分类号:P548;P612    文献标志码:
基金项目:中国地质调查局地质调查项目(DD20160061,DD20179313)
引用文本:
潘天望,袁远,吕勇,史文强.福建紫金山矿田早白垩世以来构造演化和成岩成矿时空格架[J].地质力学学报,2019,25(1):61-76DOI:10.12090/j.issn.1006-6616.2019.25.01.007
PAN Tianwang,YUAN Yuan,LYU Yong,SHI Wenqiang.THE EARLY-CRETACEOUS TECTONIC EVOLUTION AND THE SPATIAL-TEMPORAL FRAMEWORK OF MAGMATISM-MINERALIZATION IN ZIJINSHAN ORE-FIELD, FUJIAN PROVINCE[J].,2019,25(1):61-76DOI:10.12090/j.issn.1006-6616.2019.25.01.007

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