| 作 者：逄林安,田景,林常梅,柯岭,张超 |
| 单 位：长江大学地球科学学院 |
| 基金项目： |
| 摘 要： |
| 湖北松滋下三叠统大冶组主要为一套深水碳酸盐岩,与下伏上二叠统长兴组灰色中厚层状灰岩呈整合接触,它以深水-地沉积为主,夹有深水异地沉积。深水原地沉积以深灰色薄层泥晶灰岩和页岩互层为主,异地沉积以浊流沉积和碎屑流沉积为主。浊流沉积鲍玛层序C、D、E段发育,以粉屑灰岩、泥晶灰岩为主；碎屑流沉积以泥晶砾屑灰岩为主。其岩相类型有泥晶灰岩（M1）、泥晶粉屑灰岩（M2）、泥晶砾屑灰岩（M3）、泥页岩（C1）,可组合为盆地—盆地边缘相（M1+C1）、下斜坡亚相、上斜坡亚相（M1 或M1+M3）、开阔台地相（M1+C1）四种组合。从早三叠世早期到晚期,水体逐渐变浅,但总体表现为深水沉积环境。 |
| 关键词：深水沉积；碳酸盐岩；岩相类型；沉积环境；三叠纪；大冶组；湖北 |
| Author's Name: Pang Lin'an,Tian Jing,Lin Changmei,Ke Ling,Zhang Chao |
| Institution: Faculty of Geoscience, Yangtze University |
| Abstract: |
| Sedimentation of Lower Triassic Daye deep-water carbonate rock at Songzi indicates a deep water environment in general although sea water was getting shallow during early-late Lower Triassic period. Daye rock contacts conformably with the underlying Upper Permian Changxing layered limestone. It contains deep-water autochthonous thin micritic limestone interbedded with shale and deep-water allochthonous turbidity and clastic current deposits. 4 groups and 3 associations of lithofacies are classified. |
| Keywords: Early Triassic; Daye Formation; Deep-water sediments; Carbonate rock; Type of lithofacies; Sedimentary environment; Hubei Procince |
| 投稿时间： 2007-08-25 |
