GEOCHEMISTRY OF A FOSSIL HYDROTHERMAL SYSTEM AT BARTON PENINSULA, KING-GEORGE ISLAND
DC Field | Value | Language |
---|---|---|
dc.contributor.author | SO, CS | - |
dc.contributor.author | YUN, ST | - |
dc.contributor.author | PARK, ME | - |
dc.date.accessioned | 2021-09-09T18:36:36Z | - |
dc.date.available | 2021-09-09T18:36:36Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 1995-03 | - |
dc.identifier.issn | 0954-1020 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/126174 | - |
dc.description.abstract | A fossil hydrothermal system on Barton Peninsula, King George Island, Antarctica, formed a series of lead-zinc- and pyrite + native sulphur-bearing epithermal quartz +/- calcite veins, filling fault-related fractures in hydrothermally altered volcanic rocks of Eocene age. The lead-zinc veins occur within argillic hydrothermal alteration zones, whereas the pyrite + native sulphur veins are found within advanced argillic alteration zones. Fluid inclusion data indicate that the vein formation occurred at temperatures between about 125 degrees and 370 degrees C (sphalerite deposition formed at 123-211 degrees C) from fluids with salinities of 0.5-4.6 wt. % eq. NaCl. Equilibrium thermodynamic interpretation of mineral assemblages indicates that the deposition of native sulphur in the upper and central portions of the hydrothermal system was a result of the mixing of condensates of ascending magmatic gases and meteoric water giving rise to fluids which had lower pH (<3.5) and higher fugacities of oxygen and sulphur than the lead-zinc-depositing fluids at depth. The delta(34)S values of sulphide minerals from the lead-zinc veins (delta(34)S = -4.6 to 0.7 parts per thousand are much higher than the values of pyrite and native sulphur from the pyrite + native sulphur veins (delta(34)S = -12.9 to -20.1 parts per thousand. This indicates that the fluids depositing native sulphur had higher sulphate/H2S ratios under higher fo(2) conditions. Sulphur isotope compositions indicate an igneous source of sulphur with a delta(34)S(Sigma S) value near 0 parts per thousand probably the Noel Hill Granodiorite. Measured and calculated delta(18)O and delta D values of the epithermal fluids (delta(18)O(water) = -6.0 to 2 7 parts per thousand) delta D-water = -87 to -75 parts per thousand) indicate that local meteoric water played an important role for formation of lead-zinc and native sulphur-bearing quartz veins. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | CAMBRIDGE UNIV PRESS | - |
dc.subject | ORE DEPOSITION | - |
dc.subject | OXYGEN | - |
dc.subject | MINERALIZATION | - |
dc.subject | FRACTIONATION | - |
dc.subject | MARYSVALE | - |
dc.subject | DISTRICTS | - |
dc.subject | ISOTOPE | - |
dc.subject | WATERS | - |
dc.subject | UTAH | - |
dc.title | GEOCHEMISTRY OF A FOSSIL HYDROTHERMAL SYSTEM AT BARTON PENINSULA, KING-GEORGE ISLAND | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | SO, CS | - |
dc.contributor.affiliatedAuthor | YUN, ST | - |
dc.identifier.doi | 10.1017/S0954102095000101 | - |
dc.identifier.scopusid | 2-s2.0-0028852204 | - |
dc.identifier.wosid | A1995RA55200010 | - |
dc.identifier.bibliographicCitation | ANTARCTIC SCIENCE, v.7, no.1, pp.63 - 72 | - |
dc.relation.isPartOf | ANTARCTIC SCIENCE | - |
dc.citation.title | ANTARCTIC SCIENCE | - |
dc.citation.volume | 7 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 63 | - |
dc.citation.endPage | 72 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Environmental Sciences & Ecology | - |
dc.relation.journalResearchArea | Physical Geography | - |
dc.relation.journalResearchArea | Geology | - |
dc.relation.journalWebOfScienceCategory | Environmental Sciences | - |
dc.relation.journalWebOfScienceCategory | Geography, Physical | - |
dc.relation.journalWebOfScienceCategory | Geosciences, Multidisciplinary | - |
dc.subject.keywordPlus | ORE DEPOSITION | - |
dc.subject.keywordPlus | OXYGEN | - |
dc.subject.keywordPlus | MINERALIZATION | - |
dc.subject.keywordPlus | FRACTIONATION | - |
dc.subject.keywordPlus | MARYSVALE | - |
dc.subject.keywordPlus | DISTRICTS | - |
dc.subject.keywordPlus | ISOTOPE | - |
dc.subject.keywordPlus | WATERS | - |
dc.subject.keywordPlus | UTAH | - |
dc.subject.keywordAuthor | BARTON PENINSULA | - |
dc.subject.keywordAuthor | FOSSIL HYDROTHERMAL SYSTEM | - |
dc.subject.keywordAuthor | MINERAL EQUILIBRIA | - |
dc.subject.keywordAuthor | GEOCHEMISTRY | - |
dc.subject.keywordAuthor | ANTARCTICA | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.