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NTIS 바로가기자원환경지질 = Economic and environmental geology, v.47 no.4, 2014년, pp.335 - 349
고지수 (고려대학교 지구환경과학과) , 최선규 (고려대학교 지구환경과학과) , 김창성 (고려대학교 지구환경과학과) , 김종욱 (고려대학교 지구환경과학과) , 서지은 (고려대학교 지구환경과학과)
The Pocheon skarn deposit, located at the northwestern part of the Precambrian Gyeonggi massif in South Korea, occurs at the contact between the Cretaceous Myeongseongsan granite and the Precambrian carbonate rocks, and is also controlled by N-S-trending shear zone. The skarn distribution and minera...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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포천 스카른화작용과 관련된 진화특성을 검토하기 위해 사용한 전자현미분석 모델은? | 포천 스카른화작용과 관련된 진화특성을 검토하기 위하여 Na-Ca계열, Ca계열, Mg계열 스카른 유형별 주요 스카른 광물의 정량분석을 실시하였다. 전자현미분석은 고려대학교 부설 전략광물자원연구소 JEOL JXA8600SX-Oxford INCA-6025를 이용하였고, 정량분석조건은 가속전압 15 kV, 전류 3 nA, 분석직경 <5 µm, 측정시간 100초이며, ZAF법으로 보정되었다. 표준물질로 SiO2, Al2O3, Fe2O3, MgO, CaSiO3, NaAlSi2O6, KAlSi3O8, MnO, TiO2를 사용하였다. | |
포천 지역에 분포하는 백악기 명성산 화강암의 생성연대는? | 포천 지역에 분포하는 백악기 명성산 화강암은 N-S 방향 주향이동 단층대를 따라 자철석 계열 천부 반심성암으로 관입하고 있으며, 생성연대는 약 112 Ma로 보고된 바 있다(Hwang and Kihm, 2007). 포천 철광체는 주로 괴상/렌즈상으로 배태되고 부분적으로 소습곡 구조와 조화적인 박리형 층상 조직이 기재된바 있으며(So, 1977), 2010년/2011년 한국광물자원공사의 시추 시료는 공간적 측면에서 기존 철 광체와 인접한 외각 스카른대에 해당된다. | |
본 연구에서 사장석이 보이는 특징은? | 조장석은 추휘석을 충진하며, 주로 자철석-경석고-투각섬석과 밀접하게 산출된다. 사장석은 Ab95-100An0-5Or0-2로 순수한 조장석 조성 특징을 보이고 있다(Fig. 4C). |
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