彦陽地域 梁山斷層 附近 斷裂의 幾何 分析

• 영문명: The geometric analysis of fractures near the Yangsan fault in Eonyang area
• 발행기관: 대한자원환경지질학회
• 저자명: 장태우(Tae Woo Chang) 장천중(Chun Joong Chang) 김영기(Young Ki Kim)
• 간행물 정보: 『자원환경지질』26권 2호, 227~236쪽, 전체 10쪽
• 주제분류: 자연과학 > 지질학
• 파일형태: PDF
• 발행일자: 1993.04.30

영문 초록

Lineaments in the Kyungsang basin most intensely develop in the East coast domain including the Yangsan fault, which dominantly run in NNE direction. The geometry of small fault population near or along the Yangsan fault represents the dominant strikes of N35E, high angle dips and shallowly plunging rakes with dextral movement sense. Stereographic solution on the Yangsan fault geometry gives the dip of 88SE, the slip direction of 17,024 and the slip rake of 18, which were determined from the strike (N23E) of the fault measured on map, and the average attitude (N35E, 84SE) and fault striation (16,037) of small fault population considered as Riedel shears. It is judged from the geometry of small fault population to the main Yangsan fault and dragging features of bedding attitude near the fault that the Yangsan fault was produced from dextrally strike-slip movement. The movement of the Yangsan and the adjacent parallel faults is thought to be taken place much later than the other fault sets in the Kyungsang basin. It might occur during the geologic age from Eocence to early Miocene according to the consideration of K-Ar ages of the igneous rocks near the fault. The estimated paleostress state indicates ENE shortening and NNW extension. The displacement of the Yangsan fault in the study area is not constant along the fault but decreases from the south to the north. Taking the northern end of the study area as a separating point the whole extension of the Yangsan fault may be divided into southern and northern segments.

목차

ABSTRACT

序言

地質

線狀構造(Lineaments)

小斷層群의 幾何

古應力 配向 推定

考察

結論

參考文獻