摘要
河南省山西组二_1煤成煤古泥炭沼泽的类型及演化可明显地分为3个区:豫北区,二_1煤形成于上三角洲平原的淡水森林泥炭沼泽;豫西西部区,形成于泻湖海湾演化来的半咸水草本和森林泥炭沼泽,底部分层成煤植物为草本,煤层形成于最大海退期,结束于一次短暂的海侵;豫西中东部区,形成于潮坪演化来的淡水森林泥炭沼泽,上部分层形成于半咸水泥炭沼泽,结束于一次短暂的海侵。
The type and evolution of Ⅱ_1 coal swamp of Shanxi formation(Low Permian)in HenanProvince can be divided into three area clearly.In the north area,Ⅱ_1 coal is formed from fresh forest peatswamp which develops from upper deltaic plain.In the west area,Ⅱ_1 coal is formed under herb and forest peatswamp which is developed from lagoon and ended by a short transgression.The regression is at the middle periodof coal formation.The Ⅱ_1 coal forming plant of low subbed is herb.In the middle and east area, Ⅱ_1 coal isformed from fresh forest peat swamp which is developed from tidal flat and ended by a short transgression.Theupper subbed of Ⅱ_1 coal is formed under salt peat swamp.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
1993年第2期11-17,共7页
Coal Geology & Exploration
关键词
煤系
古泥炭
沼泽
类型
演化
peat swamp type
peat swamp evolution
Ⅱ_1 coal
Shanxi formation
Henan province
