- 영문명
- Petrogeochemical Study on the Igneous Rocks of Southwestern Part of the Sangju Area
- 발행기관
- 대한자원환경지질학회
- 저자명
- Bok Ryeol Choi(崔福烈) Yong Jun Kim(金勇俊)
- 간행물 정보
- 『자원환경지질』23권 3호, 329~342쪽, 전체 14쪽
- 주제분류
- 자연과학 > 지질학
- 파일형태
- 발행일자
- 1990.06.30
국문 초록
영문 초록
The purpose of this study is to clarify the nature of the differentiation and petrogenesis of igneous rocks in comparison with experimental results based on petrological and geochemical criteria. Study area is composed of the Precambrian granitic gneiss complex, Triassic meladiorite and biotite granodiorite, Jurassic biotite granite, and Cretaceous quartz porphyry. According to the data of EPMA, the clinopyroxene and orthopyroxene of meladiorite come under salite and hypersthene, respectively. Such results suggests that meladiorite is incipient differentiated products of basic magma under slow cooling condition. The petrochemical data of variation diagram of major element oxides vs. silica and of trace element oxide vs. silica, AMF triangle diagram and trace elements suggests that igneous rocks of study area are plutonic rocks belong to calc alkali rock series of the source of comagma intruded-emplaced in the order of meladiorite, biotite granodiorite and biotite granite by fractional crystallization of magma.
목차
ABSTRACT
서언
지질개요
화성암류에 대한 암석기재
우흑질섬록암의 광물화학
화성암류의 암석화학
결론
참고문헌
키워드
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