石油与天然气地质 ›› 1996, Vol. 17 ›› Issue (4): 326-332.doi: 10.11743/ogg19960412

• 论文 • 上一篇    下一篇

江西玉山晚奥陶世层孔虫－珊瑚点礁

陈学时   

  1. 杭州石油地质研究所, 浙江杭州 310023
  • 收稿日期:1995-03-16 修回日期:1996-08-10 出版日期:1996-12-25 发布日期:2012-01-16

PATCH REEF OF LATE ORDOVICIAN STROMATOPOROIDS AND CORALS IN YUSHAN,JIANGXI

Chen Xueshi   

  1. Hangzhou Institute of Petroleum Geology, Hangzhou, Zhejiang
  • Received:1995-03-16 Revised:1996-08-10 Online:1996-12-25 Published:2012-01-16

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摘要：

江西玉山大山脚晚奥陶世三巨山组层孔虫-珊瑚点礁,是在三山地区孤立碳酸盐岩台地内发育形成的,为一个在垂向上由上、下两个点礁体组成的复合型和多旋回叠置礁。主要造礁生物为块状、丛状床板珊瑚,球状、块状层孔虫和藻类,可划分出4个组成复杂、具有演替关系的生物群落。礁岩以障积岩、粘结-障积岩、障积-粘结岩和藻包覆骨架岩等过渡类型为主。礁相可划分出礁基底、礁核、礁间沉积、礁前塌积和礁盖层等5个亚相。礁核亚相具明显的3个生长旋回。礁的演化受控于构造和泥质碎屑物的注入。

关键词: 生物礁, 礁相特征, 生物群落, 晚奥陶世, 玉山

Abstract:

Stromatoporolds-coral patch reefof Lateordovlcaln Sanjushan Formation In Dashanjlaoof Yushan,Jlangxl Province,developed on an isolated carbonateplsteform In Sanshan region.It is a complex and multlcycle superimposed reefcomposed vertlcallyby two patch reefs.Themain reef-building organisms are Tabulato,stromatoporolds andalge.Basedon the paleoecology of reef-building organisms,they could be divided into four communities.It is consideredthat the rock types of the reef complex are dominantly baffflestone,bind-bafflestone,bafflebindstone and algal binded framestone.Reef fades may be divided into five subfacles such asreef base,reef core,interreef deposit,reef talus and reef cap.The reef core underwent clearlythree evolution cycles.The evolution of the reef was controlled by structures and the fillingof argillaceous debris.