인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
The sedimentary sequence in the Danyang coalfield is correlated with the newly proposed groups and formations in the Samcheog coalfield, located about 40 kilometers east-northeast. The formations in the Danyang coalfield have a general strike N30°E, dipping steeply towards west. The coal-bearing strata are thrust by two thrust faults which were probably formed during the limestone plateau was being pushed towards east. The Pyeongan System in the coalfield is divided into three groups, namely, the Gomog, the Cheolam and the Hwangji, and they are subdivided into seven formations. Paleocurrent study of the formations shows that a general direction of the water flow in the coal basin was from east to west during deposition of the Pyeongan System. The upper-most part of the Sangdong Group or the so-called upper-most part of the Great Limestone Series yields Ordovician conodonts. The Manhang and Geumcheon Formations of the Gomog Group intercalate lenticular limestone beds with marine fossils along with Fusulinids. The foraminifers show the formations to belong to Moscovian in age, as is the case of the same formations in the Samcheog coalfield. Though the Cheolam Group intercalates several coal beds, fossil plants are rare. Most coal beds in the Danyang coalfield may be of allochthonous in origin. The Hwangji Group has shale beds containing fossil plants.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
최근 본 자료 전체보기
UCI(KEPA) : I410-ECN-0101-2012-450-004478523
