徐州地区山西组砂岩岩石学特征及物源分析  

Petrological Characteristics and Provenance Analysis of Shanxi Formation Sandstone in Xuzhou Area

作　　者：冀青[1] 李壮福[1] 付雷[1] 王盼盼[1] 丁卓[1] 

机构地区：[1]中国矿业大学,江苏徐州221008

出　　处：《中国煤炭地质》2011年第6期1-4,共4页Coal Geology of China

摘　　要：徐州地区山西组砂岩中碎屑组分鉴定统计的结果显示,长石的含量为29%~52%,平均40%,明显高于周边地区。研究区岩石类型以长石砂岩为主,分选差-中等,磨圆次棱角状-次圆状,说明碎屑为短距离搬运;砂岩中斜长石的牌号显示源区主要为酸性岩;砂岩组分的Dickinson三角图解表明,物源总体来自大陆物源区的隆起基底,经分析确定物源区为丰-沛隆起。The identification and statistic results of clastic components in the Shanxi Formation sandstone, Xuzhou area have demonstrated that the feldspar content is 29%-52%, average 40%, obviously higher than that content in neighboring areas. Rock types in the study area are mainly arkose, poor to medium sorted, subangular to subrounded roundness, account for short distance transportation. The plagioclase designation in sandstone shows mainly acidic rocks in provenance. The Dickinson triangular diagram of sandstone component indicates the material source is from continental provenance lifted basement in the mass, analysis has confirmed that the source area is the Fengxian-Peixian uplift.

关 键 词：徐州 山西组 物源分析 Dickinson三角图解 

分 类 号：P588.212.3[天文地球—岩石学]