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NTIS 바로가기암석학회지 = The journal of the petrological society of korea, v.28 no.4, 2019년, pp.279 - 298
김형규 (경상대학교 지질과학과 및 기초과학연구소) , 좌용주 (경상대학교 지질과학과 및 기초과학연구소) , 김재환 (문화재청 국립문화재연구소) , 박성철 (문화재청 국립문화재연구소)
Mupung granite, which is located adjacent to Gimcheon granites to the north and Geochang granites to the south, has been known to consist of biotite-hornblende granite (Gbh), porphyritic granite (Gp), and hornblende-biotite granite (Ghb). In this study, we subdivided the Gbh of Mupung granite into b...
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
무풍 화강암체의 종류 및 구성은? | 무풍 화강암체는 북쪽으로는 김천 화강암체와, 남쪽으로는 거창 화강암체와 인접하고 있으며, 흑운모각섬석 화강암(Gbh), 반상화강암(Gp), 각섬석 흑운모 화강암(Ghb)으로 구성되어 있다고 알려져 있다. 이 연구에서, 우리는 암석학적 관찰 결과를 토대로 무풍 화강암체 내 Gbh를 흑운모 화강암(Gb)와 흑운모 각섬석 화강암(Gbh)으로 세분하였다. | |
영남육괴에서 관찰되는 암석학적 특징은? | 1. 기존의 알려져 있던 흑운모 각섬석 화강암은 암석기재적 특징, 구성광물 그리고 주성분원소의 지화 학적 특징에 의해 1차기원의 백운모를 포함하는 흑운모 화강암(Gb)과 염기성미립포유암(MME)을 포함하며, 각섬석이 나타나는 흑운모 각섬석 화강암(Gbh)으로 구분된다. 2. Gbh, Gp 그리고 Ghb는 조직 및 구성광물 그리고 현미경하에서 광물의 특징을 살펴볼 때, 경상분지에 분포하는 중생대 백악기 화강암류와 유사한 특징을 보인다. 3. 본 연구를 통해 구분된 Gb은 인접하는 거창 및 김천 화강암체와의 관계를 살펴본 결과 거창화강암체의 조직, 구성광물 및 주성분원소의 변화경향에서 유사하게 관찰된다. 따라서 Gb는 거창흑운모 화강암체의 일부분이라 판단된다. | |
거창 화강암체란? | 거창 화강암체는 중립질의 반상조직으로 반정은 주로 알칼리 장석으로, 광물구성에 따른 모드분석 결과 화강섬록암에서 몬조화강암에 속한다고 알려져 있다(Choi et al., 2006). |
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