Abstract : according to observation and study , the paleokarstifications of ordovician could be classified into 6 periods , i . e . depositional karstification , weathering curst karstification , burial karstification , semi - burial structural karstification , second burial karstification stage , its karstic types have mainly deposition karst , emergence karst , burial karst , wqueezing - water and structural karst or hot - water karst , and its karst - rocks can be distributed to two kinds of types , i . e . karst - sedimentary rock and karst - regenerated rock , and further to 8 subcategories and 5 sub - sub - categories in the north of anhui , china
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According to observation and study , the paleokarstifications of ordovician could be classified into 6 periods , i . e . depositional karstification , weathering curst karstification , burial karstification , semi - burial structural karstification , second burial karstification stage , its karstic types have mainly deposition karst , emergence karst , burial karst , wqueezing - water and structural karst or hot - water karst , and its karst - rocks can be distributed to two kinds of types , i . e . karst - sedimentary rock and karst - regenerated rock , and further to 8 subcategories and 5 sub - sub - categories in the north of anhui , china
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