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
Petrology of 44 sandstone samples of the Sindong Group in the southwestern part of the Gyeongsang Basin, 21 from the Habcheon-Sinban and 23 from the Won-ji-Moonsan sections, are studied in terms of texture and mineralogical composition. On the basis of the analytical data, rock type and provenance of the sandstones are discussed. Most sandstones are the fluvial channel deposits in the Nagdong and Hasandong Formations and the sublacustrine channel deposits in the Jinju Formation. The provenance of the Sindong Group consisted mainly of crystalline rocks such as gneiss and granite, and subordinately of supracrustal sedimentary and metasedimentary rocks. However, during the depositional period of the uppermost Jinju Formation(about 300 m), volcanic terranes were developed in and along the margin of the basin. Non-volcanic sandstones are composed of monocrystalline and polycrystalline quartz and feldspar grains from the plutonic and metamorphic rocks, and rock fragments of shale, schist and felsite. Calcite often replaces feldspar and quartz grains and infills interstitial voids. Interstices are infilled also by chlorite in some instances. Volcanic sandstones contain all the minerals and rock fragments of the non-volcanic sandstones, and abundant volcani-clastics-rock fragments, quartz grains and angular fresh plagioclase particles. Inter-stices commonly are infilled by calcite or chlorite. All the sandstones are classified as arenites, containing low content(<15%) of interstitial material, especially original matrix. Feldspar content generally increases upward, so that a large proportion of the sandstones of the Hasandong and Jinju Formations falls into arkose. Exceptionally, sandstones of the uppermost 300 m of the Jinju Formation are volcanic arenites.
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-0101-2012-450-004401513
