organic reef formation and development rely on very unique environment, but original sedimentary environment in middle to late ordovician in tarim was destroyed completely due to structure eroded.
the crypto algae organic reef underwent one reef base forming stage, three reef growing stages and two intermission, fore reef and reef core subfacies alternatively appeared in the reef growing stage.
该礁经历了一个礁基形成期、三个礁生长期和二个间歇期,生长期表现为礁前亚相和礁核亚相交互发育。
it extended the study scope and depth for the organic reef to a large extent.