n.生物岩礁
Permian bioclastic limestone and bioherm are the most favorable reservoirs. 二叠系生屑灰岩和生物礁为最有利的储层。
Bioherm type comprises tower reef, patch reef, massive reef, platform-edge reef and atolls etc. 生物礁类型有塔礁、补丁礁、块礁、台地边缘礁、环礁。
LST reef characterized by aggradational bioherm or patch reef is generally associated with mixed clastic turbidite, siliceous limestone and mudstones reef. 低水位礁仅发育于台盆背景，以加积丘礁或点礁为特色，常与混屑浊积岩、硅灰岩、硅泥岩共生。
The Late Cambrian strata in the northern part of North China are well-known for the development of storm calcirudite and bioherm limestone, which include Gushan, Changshan and Fengshan Formations. 摘要华北北部晚寒武世地层以发育风暴砾屑灰岩及生物丘灰岩著称，包括固山组、长山组和凤山组。
Keywords bioherm;reef oil pool;the South China Sea; 生物礁;礁油气藏;南海;
