Formation Pattern of Upper Ordovician Reef-Bank Complex along the Tazhong Slopebreak I, Tarim Block, NW
- 责任者：Wang Zhenyu (Southwest Petroleum University ; Chengdu 610500 ; China) ; Sun Chonghao
- 刊名：Acta Geologica Sinica
- 出版年：2010
- 卷期：84(4)
- 关键词：礁 ; reefs ; 沉积相模式 ; sedimentary facies model ; 塔里木板块 ; Tarim Plate
- 页码：p.546-552
- 图表：7 illus., 1 table, 20 refs.
- 分类号：0803
- issnNo：ISSN0001-5717
- isbnNo：CN11-1951/P
The reef-bank complex of Upper Ordovician Lianglitag Formation, formed in the high-energy belt of the platform margin along the Tazhong Slopebreak. Sedimentary units mainly include reef mound, carbonate mudmound, bioclastic bank and granule shoal, vertically displaying multiple cyclic assemblages. Individual complex starts from bioclastic bank at bottom to carbonate mudmound or reef mound at the upper part, which is overlapped by next round bioclastic bank. Reefs are mainly distributed along the high part of the slopebreak with width from three to ten kilometers. Affected by multiple phases of diagenesis and structural fracturing, the reef-bank complexes along the platform margin become the significant reservoirs characterized by various heterogeneities.