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铜(仁)-凤(凰)-三(都)-丹(寨)寒武系碳酸盐岩,属台地前缘斜坡相带,为汞、油最佳聚集部位,蕴育了全国最大的汞矿带,保留了数千万吨沥青。成岩作用有:生物作用、胶结作用、压实作用、早期溶解作用、新生变形、白云岩化作用、压溶作用、交代作用、晚期溶解作用等。早期溶解作用形成于泥盆—石炭纪,对聚油十分有利,晚期溶解作用形成于白垩纪末,对形成汞矿十分有利。
Copper (benevolence) - phoenix (phoenix) - three (are) - Dan (walled) Cambrian carbonate rock, is the platform edge of the slope phase belt, mercury, oil the best gathering place, contains the country’s largest Mercury belt, retaining tens of millions of tons of asphalt. Diagenesis: biological role, cementation, compaction, early dissolution, deformation, dolomitization, pressure solution, accounting for the role of late dissolution and so on. Early dissolution was formed in Devonian-Carboniferous, which was very favorable for oil gathering. Late dissolution was formed at the end of Cretaceous, which is very favorable for the formation of mercury deposits.