Economic and Environmental Geology (자원환경지질)
- Volume 31 Issue 6
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- Pages.473-483
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- 1998
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- 1225-7281(pISSN)
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- 2288-7962(eISSN)
Petrology of the Igneous Rocks in the Goseong area, Gyeongsang Basin II. Trace Element Geochemistry and Rb-Sr Radiometric Age
경상분지 고성지역의 화성암류에 대한 암석학적 연구 II. 미량원소 지구화학과 Rb-Sr 방사성 연대
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Jwa, Yong-Joo
(Department of Earth & Environmental Sciences, Gyeongsang National University)
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좌용주
(경상대학교 자연과학대학 지구환경과학과)
- Received : 1998.05.21
- Accepted : 1998.08.22
- Published : 1998.12.31
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Abstract
The igneous rocks in the Goseong area are composed of the volcanic rocks (andesitic lapilli tuff and rhyodacite), Bulgugsa granites (Hornblende-biotite granite and two pyroxene granite) and intrusive andesites. In the variation diagrams of the trace and rare earth element contents and elemental ratios as well as the REE patterns, the three igneous rock types show different variational trends and patterns. The geochemical features represent that the igneous rocks in the area were formed from three different magmatic pulses. Two independently carried out Rb-Sr isotope experiments for the Goseong granites show that the whole rock ages and Sr initial ratios of the granites are
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Acknowledgement
Supported by : 한국과학재단