摘要
本文以L14、L55地震大剖面为主,论述了龙门山逆冲推覆构造带北段的结构、模式、形成期、推覆距及油气远景。指出它可分“三系一区”,具有独特的地层、构造模式,是在“抬升→压扭+重力滑动”下形成的,以前缘三角区为找油气的最有利区,次为第Ⅲ逆冲系,第Ⅰ、Ⅱ逆冲系为不利区。
Mainly based on seismic profile L_(14) and L_(55), the authors discuss the texture, mode, formation time, thrusting distance and oil and gas prospects of the northern sector of thrusting nappe structure of Longmen Mountains. It is pointed out that this thrusting nappe structure may be divided into“Three Systems and One Area”, it has especial stratigraphic and structural modes and is formed under the conditions of“Uplift→Compression-torsion+Gravity glide”, and that the pledmont triangle region is the most favourable area for surveying oil and gas, the third thrusting system is more favourable one and the first and the second thrusting systems are the disfavourable ones.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
1989年第3期10-16,共7页
Natural Gas Industry
关键词
推覆构造
油气
龙门山
Longmen Mountains
nappe
texture
oil and gas accumulation
evaluation of prospects
