笔者在查干敖包地区开展1:5万区域地质调查工作时,发现本区出露的宝力高庙组层序齐全、植物化石丰富、划分标志明显,通过路线调查、剖面测量对其进行了重新划分,即据岩性组合、生物面貌等特征划分为4个岩性段,一段为河湖相灰色、灰绿色碎屑岩夹少量中性火山岩,在粉砂岩中采到了大量安格拉植物化石;二段为中偏碱性-酸性砖红色、紫色火山岩夹砂(砾)岩,其中粗面岩获得锆石U-Pb同位素年龄为(297.0±1.2)Ma;三段为灰色、灰紫色安山质火山岩夹碎屑;四段以灰白色流纹质火山岩为特征,夹砂岩、泥灰岩等,在砂岩中采到了大量安格拉植物群化石。据植物化石鉴定结果、同位素年龄资料将其形成时代确定为晚石炭—早二叠世。 When carrying out 1: 50000 regional geological survey in Chagan-Oobao area, the author found that Baoligaomiao Formation exposed in this area has complete sequence, rich plant fossils and obvious division marks. It was conducted through route survey and profile survey Re-divided, that is, according to lithology combinations, biological features and other characteristics are divided into four lithologic sections, a section of river and lake gray, gray-green clastic rocks with a small amount of neutral volcanic rocks in the siltstone to a large number of Angela plant fossils ; The second section is a middle-alkaline-acidic brick red and purple volcanic sand-gravel (gravel) rock, in which the zircon U-Pb isotopic ages of (297.0 ± 1.2) Ma and three sections of gray, Mountain volcanic rock clip clastic; four sections to the ash-white rhyolitic volcanic rock features, sandstone, marl, etc., in the sandstone to a large number of Angela flora fossils. According to the result of plant fossil appraisal, isotopic age data confirmed the formation age as Late Carboniferous-Early Permian.