塔里木盆地的古陨石坑
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摘要
塔里木盆地东部满加尔地区在中新世曾发生一次大陨石撞击事件,形成了直径约15km深约2km的近圆形古陨石坑.坑内堆积了一套较粗的快速堆积物,构成了地震时间剖面上的盆状异常体,由于异常体的地震波传播速度较高,造成了下伏层穹窿状构造假像.
An important meteorite collision event occurred in the Miocene in Mangar area, eastern Tarim basin, resulted in a subround ancient meteorite crater with diameter of 15 km and depth of 2 km. A suite of coarse deposits in meteorite crater resulted in basin-shaped seismic anomaly in time section which in turn caused the dome structure pseudomorph in the underlying strata due to its high seismic velocity.
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