| 大别造山带核部罗田陈林沟金矿成矿时代 |
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| 引用本文： | 施立达,李存有.大别造山带核部罗田陈林沟金矿成矿时代[J].地质与资源,2000,9(2):91-93. |
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| 作者姓名： | 施立达 李存有 |
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| 作者单位： | 1. 安徽地质科学研究所, 安徽 合肥 230001;2. 合肥工业大学资源与环境科学系, 安徽 合肥 230009 |
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| 基金项目： | 原地质矿产部“九五”重大基础项目!“大别造山带形成与演化及有关成矿作用”(9501102)部分成果 |
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| 摘 要： | 大别造山带核部罗田片麻岩穹隆内的陈林沟金矿矿石矿物流体包裹体Rb-Sr同位素年代和郭云坳金矿矿体围岩的钾长石K-Ar同位素年代分别为123.0±11 Ma和103.0 Ma,其与区内大规模花岗岩侵位和北大别变质地体快速隆升冷却的年龄和造山带两侧成矿带的成矿时代相吻合,由此证实在大别造山带核部的金属成矿时代也集中于白垩纪,与造山带在造山后伸展构造环境下的隆升阶段相对应.
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| 关 键 词： | 流体包裹体 Rb-Sr定年 白垩纪 陈林沟金矿 大别造山带 |
| 文章编号： | 1002-4182(2000)02-0091-03 |
| 收稿时间： | 1999-07-06 |
| 修稿时间： | 1999年7月6日 |
METALLOGENETIC EPOCH OF CHENLINGOU GOLD DEPOSIT IN THE CORE OF DABIESHAN OROGENIC BELT,LUOTIAN ,HUBEI PROVINCE |
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| DU Jian guo ,XU Xiao chun ,SUN Xian ru ,DAI Sheng qian WTBX.METALLOGENETIC EPOCH OF CHENLINGOU GOLD DEPOSIT IN THE CORE OF DABIESHAN OROGENIC BELT,LUOTIAN ,HUBEI PROVINCE[J].Geology and Resources,2000,9(2):91-93. |
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| Authors: | DU Jian guo XU Xiao chun SUN Xian ru DAI Sheng qian [WTBX] |
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| Institution: | 1. Anhui Institute of Geoscience, Hefei 230001, China;2. Hefei University of Technology, Hefei 230009, China |
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| Abstract: | Chenlingou and Guoyunao gold deposits are located in the core of Dabieshan orogenic belt. Rb-Sr dating for the fluid inclusion from Chenlingou gold deposit reports 123.0 ±11 Ma; and K-Ar dating for the
altered wallrocks of Guoyunao gold deposit is 103.0 Ma;which correspond to the age of granite intrusioon in the region and the uplifing of Dabieshan orogenic belt,as well as the metallogenetic epoch of the ore belts on both sides of the orogenic belt. This result confirms that the metallogenetic epoch of deposit in the core of Dabieshan orogenic belt is Cretaceous. The metallogenesis is related to the delamination and de-rooting of Dabieshan orogenic belt. |
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| Keywords: | fluid inclusion isotopic dating Cretaceous Chenlingou gold deposit Dabieshan orogenic belt |
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