沉积岩的密度是随深度而变化的，用重力资料研究盆地及其内部构造时必须考虑变密度的情况。
The density of sedimentary rock varies with depth. Density variation must be considered in researching sedimentary basin and its internal geologic structure with the use of gravimetric data.
中段为重力滑塌岩块及角砾岩相-构造活动型冲积扇相沉积；
The middle member is the gravity slide collapse block and breccia facies-structural movement type alluvial fan facies sediments.
沉积盆地内地质流体运动的驱动力主要有压实作用、地下水重力作用、构造作用和进入盆地中的热流。
The forces inducing basin-wide geofluids flow are principally compaction, groundwater gravity-inducing, tectonic processes acting on a basin, and introduction of heat into a basin.
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