王俊涛,张永生,宋天瑞,曹洁,田树刚

• 1:中国地质科学院矿产资源研究所
• 2:中国地质科学院地质研究所

摘要(Abstract)：

内蒙古西乌珠穆沁旗晚石炭世-早二叠世阿木山组上段主要为发育在碳酸盐岩台地边缘内的一套深灰色-灰色的块状生物碎屑碳酸盐岩。根据微相组分、微相类型和沉积环境总结出8种碳酸盐岩微相类型,分别为叶状藻粒泥灰岩-泥粒灰岩、含鲕粒团块颗粒灰岩、含少量生物碎屑的泥状灰岩、球粒生屑泥粒灰岩、Antheria polygonalis珊瑚格架灰岩或障积岩、生物碎屑亮晶颗粒灰岩、含核形石颗粒灰岩和生物碎屑泥粒灰岩。微相的垂向叠覆指示了7种沉积相带,为叶状藻礁丘相、台地边缘鲕粒滩相、较深水的开阔台地相、较浅水的斜坡相、珊瑚礁相、台内浅滩相、较浅水的开阔台地相。进一步总结出在开阔台地和台地边缘过渡带上的局部相模式;总体上为潮下开阔台地环境。

关键词(KeyWords)： 碳酸盐岩微相;叶状藻礁;沉积环境;阿木山组;石炭纪;二叠纪;西乌珠穆沁旗;内蒙古

Abstract:

Keywords:

基金项目(Foundation): 中国地质调查局资源评价项目(No.1212010782004)资助

作者(Author): 王俊涛,张永生,宋天瑞,曹洁,田树刚

DOI: 10.19839/j.cnki.dcxzz.2011.02.007

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