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潜山盆地中、新生代红层由一套单斜的碎屑岩组成,划分为上白垩统高河埠组、古新统望虎墩组(分为上、中、下三段)和痘姆组(分上、下两段)。1970年以来,在潜山盆地的持续调查发现了大量脊椎动物化石。迄今为止,潜山盆地古新统共报道了45属61种(含9个未命名的种)脊椎动物,包括爬行类、鸟类和哺乳类。其中哺乳动物最为丰富,共有33属46种(含7个未命名种),分属10个目16个科。根据化石产出的层位,可以在潜山古新统中识别出7个化石层位。基于哺乳动物生物地层学证据,望虎墩组下段至上段下部可以大致与广东南雄盆地上湖组和江西池江盆地狮子口组对比,对应于亚洲陆相哺乳动物分期的上湖期;望虎墩组上段上部和痘姆组可以与南雄盆地浓山组以及池江盆地的池江组对比,与浓山期相对应。综合我国几个古新世盆地的古地磁研究结果显示,上湖期可以大致与北美陆相哺乳动物分期的Puercan和Torreionian对比,浓山期则与Tiffanian早中期(Ti1-Ti4a)相当。上湖期和浓山期还可以进一步与国际地质年表中的丹尼期(Danian)和塞兰特期(Selandian)对比。因此,潜山盆地发现的脊椎动物化石的时代属于早、中古新世。
In the buried hill basin, the Mesozoic and Cenozoic red beds are composed of a series of monoclinic clastic rocks, which are divided into the Upper Cretaceous Gaopachu Formation, the Paleocene Wangdudong Formation (divided into upper, middle and lower sections) Group (points on the next two paragraphs). Since 1970, a large number of vertebrate fossils have been found in continuous surveys of buried hills. To date, the paleontocene in the buried hill basin has reported 61 species (including 9 unnamed species) of vertebrates in 45 genera, including reptiles, birds and mammals. The mammals are the most abundant, with 33 genera and 46 species (including 7 unnamed species), belonging to 10 orders and 16 families. According to the layers of fossil output, seven fossil beds can be identified in buried hill Paleocene. Based on the mammalian bio-stratigraphic evidence, the lower part of the Wanghusudun Formation to the lower part of the upper segment can be roughly compared with that of the Upper Lake in the Nanxiong Basin, Guangdong Province and the Lion Zikou Formation in the Chi-Chi Basin, Jiangxi Province, corresponding to the upper lake period of the continental mammalian stage in Asia; The upper part of the piers and the Plum group can be compared with the Qiangshan Formation in the Nanxiong Basin and the Chijiang Formation in the Chijiang Basin, corresponding to the thick mountain period. Based on the paleomagnetic studies of several Paleocene basins in China, the Upper Lake period can be roughly compared with the Puercan and Torreionian stages of the North American mammalian terrestrial mammals, while the thick mountain period is comparable with the early-mid-Tiffianian period (Ti1-Ti4a). The Upper Lake and Concentration Periods can be further compared with Danian and Selandian in the I Chronology. Therefore, the era of vertebrate fossils discovered in the buried hill basin belongs to the Early and Middle Miocene.