下切谷由白垩纪早期准噶尔盆地南缘强烈的构造幕式挤压冲断作用导致的湖平面快速下降形成。
The back bulge slope belt in large compressional basins is the major area where large incised valleys are formed.
北祁连金属成矿省在地质历史演化过程的不同构造环境内形成了四个主要金属成矿幕。
Four metallogenetic epochs occurred in different tectonic environments during the evolution of the Northern Qilian metallogenetic province through geological time.
在幕式构造作用下，滦平盆地经历了5期火山喷发和构造沉降演化阶段。
This basin underwent 5 evolution stages including volcanic irruptions and tectonic subsidences under the actions of episode tectonic movements.
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