Dolostone is the main rock type of the Cambrian in this area. 從下寒武統石龍洞組開始都是白雲岩沈積。
According to the mechanism of dolomitization, it can be divided into penecontemporaneous dolostone and post-penecontemporaneous dolostone. 白雲岩可據白雲石化作用的機理和時間分為準同生白雲岩和准同生后白雲岩兩大類。
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