자기지전류 탐사 자료에 나타나는 옥천대의 전기적 이방성 구조

Electrical Anisotropy of the Okchon Belt Inferred from Magnetotelluric Data
  • 이춘기; 
  • 이희순; 
  • 권병두; 
  • 조인기; 
  • 오석훈; 
  • 외 2명

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