| 下扬子盆地石炭纪的岩石学特征及沉积相 |
| |
| 引用本文： | 李双应，金福全.下扬子盆地石炭纪的岩石学特征及沉积相[J].安徽地质,1994(3). |
| |
| 作者姓名： | 李双应，金福全 |
| |
| 作者单位： | 合肥工业大学资源与环境科学系 |
| |
| 摘 要： | 位于扬子板块东部的下扬子盆地，在石炭纪时，为被动大陆边缘的陆表海沉积，陆源碎屑来自于北边的胶南古陆和南边的江南古陆东延部分─—皖浙赣古陆。石炭系分为上、下两统。早石炭世，盆地南部宣城、广德等地主要发育碎屑岩，中部巢县、南京一带以及北部滨海、洪泽一带为碎屑岩和碳酸盐岩沉积。从南往北，金陵期从滨岸碎屑岩相→开阔海台地碳酸盐岩相→潮坪碳酸盐岩和碎屑岩相；高骊山期为滨岸平原沼泽碎屑岩相→浅海陆棚碎屑岩相→海岸萨布哈白云岩、石膏、碎屑岩相；和州期盆地南部隆起，中部到北部为礁及礁后泻湖一潮坪碳酸盐岩相→开阔海台地碳酸盐相。晚石炭世主要是碳酸盐沉积，黄龙期从滨岸石英砾岩相→潮坪白云岩相→开阔海台地碳酸盐岩相；船山期是黄龙期开阔海台地碳酸盐岩相的继续，以发育核形石生物碎屑颗粒岩为特征。整个盆地的岩相带均以ＮＥＥ—ＮＥ方向展布。
|
| 关 键 词： | 岩石学特征，沉积相，石炭纪，下扬子盆地 |
Carboniferous Petrographic Features and Depositional Facies of the Lower Yangtze Basin |
| |
| Li Shuangying;JinFuquan.Carboniferous Petrographic Features and Depositional Facies of the Lower Yangtze Basin[J].Geology of Anhui,1994(3). |
| |
| Authors: | Li Shuangying;JinFuquan |
| |
| Abstract: | The Carboniferous of LYB is divided into two series. The lower one is represented by detrital rocks in thesouth of LYB,carbonate rocks and detrial rocks in the middle and north of it. Jinglin Stage is composed of littoral detritalrock facjes,open sea platform carbonate rock facies and tidal flat carbonate rock and detrital rock facies;GaolishanStage,littoral marsh tO shallow sea shelf detrital facies; Hezhou Stage,reef to backreef lagoon carbonate rock fa-cies.The upper Carboniferous is characterized by carbonate rocks in LYB. Huanglong Stage consists of littoral quartz con-glomerate facies,tidal flat dolostone facies and shallow sea platform carbonate rock facies;Chuanshan Stage,shal-low sea platform carbonate rock facies. |
| |
| Keywords: | petrographic features depositional facies Carboniferous Lower Yangtze Basin(LYB) |
| 本文献已被 CNKI 等数据库收录！ |
