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Morpho-Sedimentary Responses to the Regression-Transgression of the Paleolakes Associated with the Tectonics in the Shanxi Graben Basins
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摘要

///The Shanxi Graben Basins include the Linfen Basin, Taiyuan Basin, Xinding Basin and Datong Basin. This paper first analyzes and lists the different responses of the morpho-sedimentary features to the paleolake regressions and transgressions, such as lake terraces, lake erosion shores, alluvial terraces in the surrounding mountainous areas, the vertical alternations of loess and lacustrine sediments,  the horizontal expansion or contraction of loess and lacustrine sediment, and the changes in depositional rhythm. Second, based on the field data about the landform and lacustrine sediment in the basins, the paper analyzes the history and processes of the paleolake regressions and transgressions during the middle-late Quaternary.  Taking the local tectonic movement in the deep earth into account, this paper concludes a possible link between regional tectonic movements and paleolake regressions-transgressions. The paleolake regressions and transgressions with large extents in the basins were the results of tectonic movement in the deep earth.

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