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

Chen Xueshi

doi:10.11743/ogg19960412

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PATCH REEF OF LATE ORDOVICIAN STROMATOPOROIDS AND CORALS IN YUSHAN,JIANGXI
Vol. 17, Issue 4, Pages: 326-332(1996)
Online First：25 December 1996，

Published：1996
DOI： 10.11743/ogg19960412
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DOI：

Chen Xueshi. PATCH REEF OF LATE ORDOVICIAN STROMATOPOROIDS AND CORALS IN YUSHAN,JIANGXI[J]. 1996, 17(4): 326-332. DOI： 10.11743/ogg19960412.

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。

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.