Abstract:A total of 6 species of 4 genera conchostracan fossils have been first discovered in Gaoliban Town, southwest uplift of Songliao Basin, including Estherites (Euestherites) cf. pulcherrimus Zhang et Chen, Estherites (Euestherites) sp., Estherites sp., Halysestheria biformis Zhang et Chen, Glyptostracus sp. and Dictyestheria sp., indicating the Late Cretaceous Nenjiang Formation in age. The discovery lays a foundation for the establishment of stratigraphic sequence in the southwest uplift of Songliao Basin and provides a strong support for further oil-gas geological survey and research in the area.
Chen P J, Li G, Batten D J. Evolution, migration and radiation of Late Mesozoic conchostracans in East Asia[J]. Geological Journal, 2007,42(3/4):391-413.
[2]
陈丕基. 中国白垩纪叶肢介生物地层学[J]. 地层学杂志,2012,36(2):300-313.
[3]
Wu H C, Zhang S L, Jiang G Q, et al. The floating astronomical time scale for the terrestrial Late Cretaceous Qingshankou Formation from the Songliao Basin of Northeast China and its stratigraphic and paleoclimate implications[J]. Earth and Planetary Science Letters, 2009,278(3):308-323.
[4]
Jia J L, Bechtel A, Liu Z J, et al. Oil shale formation in the Upper Cretaceous Nenjiang Formation of the Songliao Basin (NE China):Implications from organic and inorganic geochemical analyses[J]. International Journal of Coal Geology, 2013,113(6):11-26.
Wan X Q, Zhao J, Scott R W, et al. Late Cretaceous stratigraphy, Songliao Basin, NE China:SK1 cores[J]. Palaeogeography, Palaeo-climatology, Palaeoecology, 2013,385(1):31-43.
[10]
Chen P J. A survey of the non-marine Cretaceous in China[J]. Cretaceous Research, 1983,4(1):123-143.