摘要
文中将河东煤田中部石炭系灰岩中的钙球划分为七种类型.其中,以具“二元”结构和薄的泥晶包壳的园形钙球及磨损钙球最为常见,常产出于含少量球粒、粉屑、藻屑或骨屑的微晶灰岩中,反映中等～弱动荡条件的局限陆表海碳酸盐台地之潮下～潮间带环境。
The Calcisphere in carboniferous series in middle part of HerdongCoal Basin is classi- fied into seven types in the paper.The circular Caleisphere,appearing in“dual structure” and with a thin micritic shell,is the commonest.Usually,it presents in micritic limestone with minor centen of pellet or silt—detritus or organic microdetritus,reflecting weak dy- namics in the subtidal to intertidal zone of the epicontiental sea.
关键词
煤田
灰岩
钙球
结构
类型
环境
calcisphcre
shape
structure
sedimentary environment
