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He-Ar-H-O isotopic signatures in Au-Ag bearing ore fluids of the Sunshin epithermal gold-silver ore deposits, South Korea
https://nied-repo.bosai.go.jp/records/4233
https://nied-repo.bosai.go.jp/records/4233d109b1b7-6fd8-499b-856c-6fa2a9c83213
| Item type | researchmap(1) | |||||||||||||||||
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| 公開日 | 2023-03-30 | |||||||||||||||||
| タイトル | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| タイトル | He-Ar-H-O isotopic signatures in Au-Ag bearing ore fluids of the Sunshin epithermal gold-silver ore deposits, South Korea | |||||||||||||||||
| 言語 | ||||||||||||||||||
| 言語 | eng | |||||||||||||||||
| 著者 |
Kyu Han Kim
× Kyu Han Kim
× Seungyeol Lee
× Keisuke Nagao
× Hirochika Sumino
× Kyounghee Yang
× Jong Ik Lee
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| 抄録 | ||||||||||||||||||
| 内容記述タイプ | Other | |||||||||||||||||
| 内容記述 | Helium (He-3/He-4), argon (Ar-40/Ar-36) and oxygen (O-18/O-16) isotopic ratios in fluid inclusions trapped in quartz and pyrite from the Sunshin epithermal gold-silver ore deposits in South Korea were analyzed to investigate the magmatic contribution to ore forming fluids. Mantle helium with high He-3/He-4 ratios (up to He-3/He-4 similar to 9R(A), where R-A = 1.4 x 10(-6) for air) were identified from fluid inclusions in auriferous quartz veins, which are characterized as low sulfidation (adularia-sericite) type. The ratios provide direct evidence of links between low sulfidation ore fluids in epithermal gold deposits and magma from a mantle source. Interestingly, the oxygen and hydrogen isotopic compositions of the ore fluids (delta O-18= - 1.9 to - 6.6%., delta D = - 82 to - 100%.), calculated from ore quartz, indicate that meteoric waters were predominant during precipitation of the Au-Ag ore. Microthermometric measurements for fluid inclusions indicate relatively low temperatures (<= 300 degrees C) for the formation of the low sulfidation epithermal ore deposits. (C) 2012 Elsevier B.V. All rights reserved. | |||||||||||||||||
| 言語 | en | |||||||||||||||||
| 書誌情報 |
en : CHEMICAL GEOLOGY 巻 320, p. 128-139 |
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| 出版者 | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| 出版者 | ELSEVIER SCIENCE BV | |||||||||||||||||
| ISSN | ||||||||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||||||||
| 収録物識別子 | 0009-2541 | |||||||||||||||||
| DOI | ||||||||||||||||||
| 関連識別子 | 10.1016/j.chemgeo.2012.05.027 | |||||||||||||||||
