摘要
通过对地震剖面的连片解释和剖面构造演化研究认为，枫顺场-天井山构造自震旦纪以来经历了拉张成盆、陆隆伸展背景下的3期演化过程。震旦纪-中三叠世末以拉张成盆作用为主，接受了一套海相碳酸盐岩和碎屑岩地层沉积，该时期枫顺场-天井山构造不存在；晚三叠世-中侏罗世末为重力滑动阶段，位于重力滑动构造系统前锋推挤带的枫顺场-天井山区域发育以薄皮构造为主的一系列逆冲推覆构造；晚侏罗纪以来开始挤压造山运动，构造动力学背景由重力滑动逐渐转化为水平挤压，发生基底卷入变形，形成一系列以厚皮构造为主的前展式逆冲推覆构造，剥蚀后表现为现今的构造样式。
By the studies of the commingled interpretation and the structural evolution of the seismic profiles, Fengshunchang-Tianjing Mountain Tectonics has experience, the following three evolution process from Sinian to Now. extended to generate a basin, gravity gliding and compressional orogenesis under the background of the conti- nental uplift and expansion. At the extensional basin stage （Z-T2） , there were no Fengshunchang-Tianjing Moun- tain structures, but sedimentated a series of sea facies carbonate and clastic formations. At the gravity gliding stage （ T3-J2 ） , located in the front of the gravity gliding belt of the structural system, Fengshunchang-Tianjing Mountain regionally developed into a series of thrust nappe structures taking thin surface structure as the main form; since Late Jurassic period （J3-Q） , the compressional orogenesis has formed, the background of the structural dynamics changes gradually from stretching/gravity gliding to horizontal compression, accompanied with the basement-in- volved deformation, and then a series of advance thrust structures taking thick surface structure as main form are produced. After eroding, the above structures manifests as nowaday structural patterns.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2013年第1期12-17,共6页
Petroleum Geology & Oilfield Development in Daqing
基金
国家自然科学基金（41030426）和教育部博士点基金项目（20095122110002）.
关键词
龙门山北段
构造演化
重力滑动
造山运动
构造样式
North Longmen Mountain
tectonic evolution
gravity gliding
orogenic movement
structural pattern
