地学前缘 ›› 2024, Vol. 31 ›› Issue (1): 226-238.DOI: 10.13745/j.esf.sf.2024.1.9
• 陆内成矿作用与成矿系统(华南中生代陆内成矿作用) • 上一篇 下一篇
胡瑞忠1,2(), 高伟1, 付山岭1, 苏文超1, 彭建堂1, 毕献武1
收稿日期:
2023-12-30
修回日期:
2024-01-08
出版日期:
2024-01-25
发布日期:
2024-01-25
作者简介:
胡瑞忠(1958—),男,研究员,中国科学院院士,主要从事矿床学和矿床地球化学研究。E-mail: huruizhong@vip.gyig.ac.cn
基金资助:
HU Ruizhong1,2(), GAO Wei1, FU Shanling1, SU Wenchao1, PENG Jiantang1, BI Xianwu1
Received:
2023-12-30
Revised:
2024-01-08
Online:
2024-01-25
Published:
2024-01-25
摘要:
陆内成矿机制是全球性科学难题。华南陆块中生代成矿大爆发,成矿作用远离活动大陆边缘,形成西部金锑铅锌低温成矿省和东部钨锡多金属高温成矿省,是研究陆内成矿的理想场所。因为空间上的分离,两个成矿省长期被认为是互为独立的体系。研究发现,西部低温成矿(230~200 Ma、160~130 Ma)与东部高温成矿时代一致并显示类似的地球化学指纹,印支期陆内造山和燕山期软流圈上涌是其共有成矿驱动机制,两个成矿省是具有成因联系的整体,共同构成面状展布的巨型多金属陆内成矿区;成矿后华南从西向东剥蚀程度的增强控制了目前近地表矿西部低温、东部高温的空间分布格局,低温成矿省东部区域的深部可能存在高温钨锡多金属矿床。在此基础上,建立了定位于陆内岩石圈先存薄弱区、陆壳供给矿源、高低温矿并重、成矿面状展布从而明显区别于板块边缘成矿机制的华南陆内成矿新理论。
中图分类号:
胡瑞忠, 高伟, 付山岭, 苏文超, 彭建堂, 毕献武. 华南中生代陆内成矿作用[J]. 地学前缘, 2024, 31(1): 226-238.
HU Ruizhong, GAO Wei, FU Shanling, SU Wenchao, PENG Jiantang, BI Xianwu. Mesozoic intraplate metallogenesis in South China[J]. Earth Science Frontiers, 2024, 31(1): 226-238.
图1 华南陆块地质构造和中生代矿床分布简图(据文献[7-8]修改)
Fig.1 Simplified tectonic map of the South China block and distribution of Mesozoic ore deposits. Modified from [7-8].
图2 以往确定的华南低温成矿省右江矿集区卡林型金矿床的成矿年龄(据文献[16]修改)
Fig.2 Previous dating results for Carlin-type gold deposits of low-temperature metallogenic province in South China. Modified from [16].
图3 华南陆块中生代大规模低温和高温成矿时代对比(据文献[7,10,22]修改)
Fig.3 Comparison of mineralization ages of the Mesozoic low- and high-temperature metallogenic provinces in South China. Modified from [7,10,22].
图4 右江矿集区卡林型金矿床硫化物矿物硫同位素组成(据文献[17])
Fig.4 Sulfur isotopic compositions of sulfide minerals from Carlin-type gold deposits in the Youjiang Basin. Adapted from [17].
图5 卡林型金矿成矿流体3He/20Ne-4He/20Ne混合模型示意图(据文献[40])
Fig.4 3He/20Ne-4He/20Ne mixing model for ore-forming fluids of Carlin-type gold deposits in the Youjiang Basin. Adapted from [40].
图6 华南低温成矿省金锑汞矿床Δ201Hg-Δ199Hg关系图(据文献[48,52⇓-54]修改)
Fig.6 Plot of Δ201Hg vs. Δ199Hg for gold, antimony, and mercury deposits of low-temperature metallogenic province in South China. Modified from [48,52⇓-54].
图7 低温金矿床与高温钨矿床成矿流体元素含量和元素/Na比值对比图(据文献[7])
Fig.7 Comparison of elemental concentration and element/Na ratio in ore-forming fluids between low-temperature gold deposit and high-temperature tungsten deposit. Adapted from [7].
图8 低温成矿省右江和湘中矿集区上低温矿、下高温矿的垂向二元结构成矿模式
Fig.8 Vertical binary model for upper low-temperature, lower high-temperature mineralization in the Youjiang and Xiangzhong ore clustes of low-temperature metallogenic province
图9 华南中生代低温和高温成矿省成矿时代和动力学背景(据文献[9]修改)
Fig.9 Mineralization ages and dynamic setting of the Mesozoic low- and high-temperature metallogenic provinces in South China. Modified after [9].
图10 华南印支期(A)和燕山期(B)大规模成矿动力学模型(据文献[7]修改)
Fig.10 Metallogenic dynamic models for large-scale mineralization during the Indosinian (A) and Yanshanian (B) in South China. Modified after [7].
图11 华南低温与高温成矿省的相互关系及其深部找矿预测图(据文献[7]修改)
Fig.11 Genetic relationship between the low- and high-temperature metallogenic provinces in South China and deep prospecting prediction. Modified after [7].
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