摘要
在研究神木煤田２－２煤层煤岩特征的基础上，划分了三种泥炭沼泽类型，即开阔水体草本沼泽、陆地森林沼泽和潮湿森林沼泽。泥炭沼泽由三角洲平原上的浅水湖泊演化而来并经历了三个演化阶段。成煤植物早期以草本为主，中期和后期以木本为主。森林火灾和洪泛事件在中期最为频繁。
On the basis of study on the petrographic characteristics of coal 2 -2 in Shenmu Coalfield,three types of peat swamp are recognized,i.e.,open herb swamp,terrestrial forest swamp and wet forest swamp.peat swamp was evolved from the shallow lake on delta plain and had involved three evolutional stages.Herb was the main coal forming plant at the early stage,but arborescent vegetation was dominant at both the middle and late stages.Forest fire and flooding events frequently occurred at the middle stage.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
1996年第6期9-12,共4页
Coal Geology & Exploration
关键词
煤田
煤层
煤岩
泥煤
沼泽演化
peat swamp
coal petrography
Yanan Formation
Shenmu Coalfield
