Biotite <sup>40</sup>Ar/<sup>39</sup>Ar Geochronology Constraint on the Genesis of the Sarekuobu Gold Deposit, Xinjiang

ZHENG Yi; LI Dengfeng; ZHANG Li; CHEN Huayong

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Biotite ⁴⁰Ar/³⁹Ar Geochronology Constraint on the Genesis of the Sarekuobu Gold Deposit, Xinjiang

更新时间：2023-12-11

- Biotite ⁴⁰Ar/³⁹Ar Geochronology Constraint on the Genesis of the Sarekuobu Gold Deposit, Xinjiang
- Acta Scientiarum Naturalium Universitatis SunYatseni Vol. 53, Issue 6, Pages: 10-18(2014)
- 作者机构：
  
  1. 中山大学地球科学与地质工程学院,广东,广州,510275
  2. 
  3. 中国科学院广州地球化学研究所矿物学与成矿学重点实验室,广东,广州,510640
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2014，
  
  Published Online：25 November 2014，
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ZHENG Yi, LI Dengfeng, ZHANG Li, et al. Biotite ⁴⁰Ar/³⁹Ar Geochronology Constraint on the Genesis of the Sarekuobu Gold Deposit, Xinjiang. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 53(6):10-18(2014)
DOI：

ZHENG Yi, LI Dengfeng, ZHANG Li, et al. Biotite ⁴⁰Ar/³⁹Ar Geochronology Constraint on the Genesis of the Sarekuobu Gold Deposit, Xinjiang. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 53(6):10-18(2014) DOI：

摘要

新疆萨热阔布金矿位于阿尔泰造山带南缘克兰盆地内，矿体呈脉状产于康布铁堡组火山岩地层中。为准确厘定其成矿时代，对矿区含矿石英脉中的云母进行了年龄测定，1件黑云母样品的

Ar/

Ar坪年龄为(213.5 ± 2.3) Ma，相应的等时线年龄为(212.4 ± 2.2) Ma，反等时线年龄为(212.5 ± 2.2) Ma，与坪年龄在误差范围内一致。据此，萨热阔布金矿成矿作用发生于约213 Ma，成矿年龄晚于成岩年龄（~400 Ma）约180 Ma。因此，萨热阔布金矿为后生矿床。成矿年龄略晚于区域变质作用(~250 Ma) 约37 Ma，推测成矿与阿尔泰造山带碰撞造山作用有关。结合矿床地质特征和流体包裹体特征，认为萨热阔布金矿为碰撞造山体制下形成的造山型金矿。

Abstract

The genesis of polymetallic deposits in southern Altay

NW China has been disputed between a syngenetic seafloor hydrothermal process and an epigenetic orogenic-type mineralization. The Sarekuobu gold deposit occurs as NW-trending veins in the Devonian Kelan volcanicsedimentary basin of the Altay orogenic belt. To constrain the metallogenic age

biotite

Ar/

Ar geochronological analysis was carried out in this paper. One biotite sample separated from the gold-bearing lodes yielded

Ar/

Ar isotopic plateau age of (213.5 ± 2.3) Ma

representing the mineralization age of gold-polymetallic sulfides. By summarizing the available isotopic ages and geochemistry data

a significant collision event and related metallogeny during the Triassic in the Altay Orogen is recognized. In combination with the characteristics of ore geology and fluid inclusion geochemistry

the Sarekuobu gold deposit can be determined as an epigenetic orogenictype gold deposit.

关键词

黑云母40Ar/39Ar 坪年龄萨热阔布金矿造山型金矿阿尔泰造山带

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⁰

Biotite 40Ar/39Ar Geochronology Constraint on the Genesis of the Sarekuobu Gold Deposit, Xinjiang

DOI：

摘要

Abstract

关键词

Keywords

references

Biotite ⁴⁰Ar/³⁹Ar Geochronology Constraint on the Genesis of the Sarekuobu Gold Deposit, Xinjiang