oolite

Grainstones are the main part of the section, among which the oolites, intraclast limestones and most bioclast limestones are cemented by sparry calcite.

颗粒灰岩在剖面中占绝大多数，其中，鲕粒灰岩、内碎屑灰岩和多数生物碎屑灰岩均为亮晶方解石胶结。

The paper has discussed the sedimentary characteristics of primary coal-bearing strata in the region, These are the following, oolites, nodules, bedding, rock and mineral, paleontologic and coaly.

通福矿含煤地层的沉积特征,即鲕粒、结核、层理、岩矿、古生物及煤质等分析,总结出福矿童子岩组第三段上亚段地层的沉积环境为:3号煤层为河控三角洲相沉积;