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Hydrothermal alteration and isotopic variations of igneous rocks in Barton Peninsula, King George Island, Antarctica

Cited 2 time in scopus
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Title
Hydrothermal alteration and isotopic variations of igneous rocks in Barton Peninsula, King George Island, Antarctica
Other Titles
남극 킹조지섬 바톤반도 화성암의 열수변질작용과 동위원소 조성 변화
Authors
Shin, Dongbok
Lee, Jong Ik
Hur, Soon Do
Hwang, Jeong
Subject
Geology
Keywords
Barton Peninsula; granodiorite intrusion; hydrothermal alteration; isotopic variation; meteoritic water
Issue Date
2009
Publisher
The Association of Korean Geoscience Societies and Springer
Citation
Shin, Dongbok, et al. 2009. "Hydrothermal alteration and isotopic variations of igneous rocks in Barton Peninsula, King George Island, Antarctica". GEOSCIENCES JOURNAL, 13(1): 103-112.
Abstract
O, H, S and Sr isotopes were investigated to charaterize the nature of hydrothermal fluids and alteration processes in volcanic and intrusive rocks in Barton Peninsula, King George Island. The oxygen and hydrogen isotope compositions of altered basaltic andesite and granodiorite are similar to each other. The oxygen and hydrogen isotopic values gradually decrease from altered basaltic andesite to altered dyke and quartz-veined volcaniclastic rocks. THe genetic linkage between hydrothermal fluid and granodiorite intrusion accounts for similar sulfur isotopic values among sulfide minerals, both in the granodiorite stock and in nearby altered basaltic andesite. The isotopic and trace element interelations suggest that meteoric water participated in hydrothermal activities via mixing with magmatic water, and the contribution of seawater was insignificant. All of the above results indicate that hydrothermal alteration was influenced by fluids related to granodiorite intrusion.
URI
http://repository.kopri.re.kr/handle/201206/6190
DOI
http://dx.doi.org/10.1007/s12303-009-0009-1
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