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新疆南天山库尔干南阿尔腾柯斯组硅质岩地层中发现了丰富的保存良好的放射虫化石,共计21属34种,11个未定种,1个未定种属。研究表明,两个样品的放射虫组合时代分别为中—晚泥盆世和早石炭世。中—晚泥盆世放射虫组合的发现,丰富了库车地区泥盆纪放射虫生物群组合,为确定阿尔腾柯斯组的时代奠定了生物化石依据。结合前人对该组生物化石的研究,该组为跨时代岩石地层单元,应予解体。而具有早泥盆世—晚石炭世放射虫硅质岩的深水海相沉积地层为古南天山洋盆的演化过程提供了地层学证据。
A large number of well-preserved radiolarian fossils have been found in the silty rock formations of the Southern Altenkoos Formation in the southern Kurgan, South Tianshan, Xinjiang, with a total of 21 genera and 34 species, 11 undetermined species and 1 undetermined species. The study shows that the radiolarian assemblages of the two samples were Meso-Late Devonian and Early Carboniferous, respectively. The discovery of the Mid-Late Devonian radio-ore assemblages enriched the Devonian radio-fauna assemblage in the Kuqa area and laid the foundation for determining the age of the Altenkosti Formation. Combined with previous studies on this group of biological fossils, this group is a stratigraphic unit of lithosphere across ages and should be disintegrated. While the deep-water marine sedimentary strata with Early Devonian-Late Carboniferous radiolarian chert provide stratigraphic evidence for the evolution of the ocean basin in the southern Gansu.