Mixed siliciclastic-carbonate sedimentations during the early- middle Cambrian in the north china platformL a example from zhangxia, shandong, china

摘要

Mixed silliciclastic carbonate sedimentations from the Mandou Formation to the Xuzhuang Formation during the Early-Middle Cambrian in the North China Platform were interbeds of siliciclastic and carbonate rock and mixed sediments with both silicicalstic and carbonate components. The former indicated interbeds of the mudstone and dolostone or grainstone and silt shale; the latter formed argillaceous dolostones, dolomitic mudstone, quartz calcarenite etc.