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자기지전류 탐사 자료에 나타나는 옥천대의 전기적 이방성 구조
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초록
The MT data at the Okchon Belt show peculiar phase responses exceeding 90o. A reasonable explanation is thatthose responses are due to an electrical anisotropy structure which is composed of a narrow anisotropic block and ananisotropic layer. Considering the dominant anisotropic strikes of the block (NE-trend) and the layer (NW-trend) inferred fromthe MT data, if existing, the electrical anisotropy in the Okchon Belt was probably produced by the deformations in the pre-Jurassic period, since the NE-trending shearing or thrusting should create alternating bands of metamorphic rocks and fractureswith NE-trending. Correlation of the structural strike of 2-D block with the latest EW-trending deformation eventsdemonstrates that the geometrical structure of the anisotropic block was formed by the latest Daebo and Bulgugsa orogeny. ......... electrical anisotropy, magnetotellurics, Okchon Belt, phases exceding 90o. . : ...... ..... ..... ... 90o
- 제목
- 자기지전류 탐사 자료에 나타나는 옥천대의 전기적 이방성 구조
- 제목 (타언어)
- Electrical Anisotropy of the Okchon Belt Inferred from Magnetotelluric Data
- 저자
- 이춘기; 이희순; 권병두; 조인기; 오석훈; 송윤호; 이태종
- 발행일
- 2007-04
- 유형
- Y
- 저널명
- 한국지구과학회지
- 권
- 28
- 호
- 2
- 페이지
- 227 ~ 239