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NTIS 바로가기자원환경지질 = Economic and environmental geology, v.50 no.1, 2017년, pp.35 - 44
이인경 (충북대학교, 지구환경과학과) , 전영식 (충북대학교, 지구환경과학과) , 최상훈 (충북대학교, 지구환경과학과)
The Hadong-Sancheong Proterozoic anorthosite complex occurs in the southwestern region of the Ryongnam massif. The geology of the area mainly consists of metamorphic rocks of the Jirisan metamorphic complex as basement rocks, charnockite, and the Hadong-Sancheong anorthosite, which are intruded by t...
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
하동-산청 회장암체는 어떻게 구분할 수 있는가? | 하동-산청 회장암체는 영남육괴의 남서부에 선캠브리아기 지리산 편마암 복합체의 변성암류를 기반암으로 차노카이트(charnockite)와 함께 분포하며, 주변에는 중생대 화성암류가 관입 산출한다. 하동-산청 회장암체는 중생대 쥬라기의 섬장암을 경계로 북서쪽의 산청 회장암체와 남쪽의 하동 회장암체로 구분된다. 광체는 하동 회장암체 내에 남북방향으로 약 14 km의 연장을 보이며 단속적으로 산출되는 하동 함 철-티탄 암맥상 광체이다. | |
하동-산청 지역 회장암체에 대한 선행연구는 무엇이 있는가? | 국내 학자들에 의한 회장암체의 본격적인 연구는 Son and Cheong(1972) 에 의해 처음으로 수행되었으며, Jeong(1980) 에 의해 하동-산청 회장암체로 명명되었다. 그 후 하동-산청 회장암체에 대한 암석학적, 지구화학적 연구가 다수 수행되었다 (Jeong, 1982; Jeong et al., 1989; Kwon and Jeong, 1990; Jeonget al., 1991; Lee et al., 1999; Park et al., 2001; Park et al., 2004; Ko, 2006). 이들은 회장암체의 산출특성, 주변 산출암상과의 관계 및 암석화학 특성 등을 검토하여 하동-산청 회장암체의 성인을 제시하였다. 하동-산청 회장암체의 생성과 관련된 연대 측정 결과에 의하면, 하동-산청 회장암은 대표적 회장암의 분류 유형 중 원생대 massif형 회장암(Proterozoic massiftype anorthosite)에 해당되는 것으로 해석되었다(Kwon and Jeong, 1990; Lee et al., 1999; Park et al., 2004). | |
회장암이란 무엇인가? | 회장암(anorthosite)이란 사장석의 함량이 90% 이상이고 고철질 광물의 함량이 10% 미만인 심성암을 의미한다(Ashwal, 1993). |
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