新疆阿合奇地区石炭系巴什索贡组珊瑚化石及其地质意义

发布时间：2019-01-08 06:57

【摘要】：塔里木盆地西北缘阿合奇地区石炭系巴什索贡组研究程度较低,鲜有古生物化石的报道,其精确时代一直没有确定。在该套地层中发现四射珊瑚化石共计10属13种,床板珊瑚5属8种。其中四射珊瑚中主要分子有Kueichouphyllum,Palaeosmilia,Dibunophyllum,Arachnolasma,Lithostrotion,根据珊瑚的垂向分布,建立了Kueichouphyllum-Palaeosmilia-Dibunophyllum组合带,该组合带可与前人在华南地区早石炭世地层中建立的Yuanophyllum带进行对比,也能与邻区及中国其他地方相同时期的珊瑚组合对比,进而确定其精确时代为石炭纪密西西比亚纪维宪期至德坞期早期。对该珊瑚动物群的生物古地理研究表明,该动物群具明显的特提斯生物大区和中国北方大区的珊瑚分子特征,属二者的混生带。
[Abstract]:The Bashsogon formation of Carboniferous in the northwestern margin of the Tarim Basin is of low degree of study, and there are few reports of paleontological fossils, and its exact age has not been determined. A total of 10 genera, 13 species and 8 species of bedplate coral were found in this series. Among them, the main molecule in the tetracorals is Kueichouphyllum,Palaeosmilia,Dibunophyllum,Arachnolasma,Lithostrotion,. According to the vertical distribution of the coral, the Kueichouphyllum-Palaeosmilia-Dibunophyllum assemblage zone is established, which can be compared with the Yuanophyllum belt established by the predecessors in the early Carboniferous strata in South China. It can also be compared with the corals assemblages of the same period in neighboring areas and other parts of China, thus determining its precise age from the Carboniferous period from the Carboniferous to the early Devi period in Mississippi. The biogeogeographical study of the coral fauna shows that the fauna has obvious characteristics of coral molecules in the Tethys biota and the northern China region, which belong to the mixed zone of the two fauna.
【作者单位】：中国人民武装警察部队黄金第七支队;中国地质大学(武汉)地球科学学院;
【基金】：中国地质调查局项目“西南天山柯坪地区六幅地质矿产综合调查”(1212011504201);“新疆1∶5万卡克、色帕巴衣幅区域地质矿产调查”(1212011220661)
【分类号】：P534.45;Q915.2

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