摘要
15煤层形成于障壁后泻湖充填的滨海平原上。受北低南高的古地形影响,煤层北厚南薄;与泥炭沼泽同期发育的河流使北部煤层变薄、分叉、缺失,灰分增高;煤层形成后被海相沉积覆盖,故煤层具高硫特征。
Coal seam No15was fromed on the coastal plain developed onthe basis of filled-lagoon of back-barrier,and is large in the thickness,persistentlaterally,middle-high in ash content andhigh in sulphur content.Coal distribution tendsto be thicker in the north than in the southbecause of paleotopography(lower in thenorth than in the south).Contemporaneousriver with accumulating-peat swamp made thenorthcoal thin,diverge,lack and highet inash content.High percentage in sulphur contentwas due to the affect of marine deposits directlyoverlied the coal seam.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
1990年第5期9-13,共5页
Coal Geology & Exploration
