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地质科学  1991, Vol. Issue (2): 120-128    DOI:
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辽南晚前寒武纪地层中的宏体化石之地层意义的探讨
陈孟莪
中国科学院地质研究所
DISCUSSION ON THE STRATIGRAPHIC SIGNIFICANCE OF MACROFOSSILS FROM THE LATE PRECAMBRIAN SEQUENCE IN SOUTHERN LIAONING PROVINCE
Chen Menge
Institute of Geology, Acalemta Siaica, Beijing 100029
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摘要 辽南地区晚前寒武纪地层中多层位宏体化石的发现,使序列更完善。根据化石生物机体的复杂程度,可列入前冰期的辽南系,它介于震旦系和青白口系之间。其南关岭组的宏体化石组合类似淮南地区的九里桥组,提高了两区的晚前寒武纪地层的对比度。复州湾沙山村赵家坎子剖面再次证明大连市南、北部晚前寒武纪地史发育的一致性及原区调队等单位对地层叠接的正确性。
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陈孟莪
关键词晚前寒武纪   宏体化石   南关岭组     
Abstract: New macrofossils and their fossiliferous horizons, such as Chuarid from Qiaotou F., worms and U-shaped cylindrical mega-acritarches from Changlingzi F., worms (Pararenicola-Protoa-renicola-Huaiyuanella)-Tawuid from Nanguanling F., Medusa-like fossils from Xingmincun F., and Chuarid-Tawuid from Guotun F. etc, were found recently in southern Liaoning. In addition to the previously found Chuarid-Tawuid from Diaoyutai F. and Nanfen F., it makes the macrofossil successions perfect. But the late Precambrian in this area can be inferred to be A separate Liaonan System (Cao et al., 1982), which is lower than late Precambrian tillites and between the Sinian and Qingbaikou systems in stratigraphic column.According to the macrofossil assemblage from Nanguanling F. similar to that from Jiuli-qiao F., both these formations may be isochronal. Thereof, the reliable correlation of the late Precambrian formation in southern Liaoning with that in Huainan area is strengthened. The newly established Zhaojiakanzi stratigraphic section, near Shashan Village of Xietun Country and re-defined well-known Wuhangshan Section proved that the earlier stratigraphic classification by the previous geologists for many years is correct, stratigraphic classification of both these late Precambrian deposits can be unified, as their evolutionary geological history is basically similar.
Key wordslate Precambrian   macrofossll   Nanguanling Formation   southern Liaoning   
收稿日期: 1988-11-01;
基金资助:国家自然科学基金项目4870089
引用本文:   
陈孟莪. 1991, 辽南晚前寒武纪地层中的宏体化石之地层意义的探讨. 地质科学, (2): 120-128.
Chen Menge. DISCUSSION ON THE STRATIGRAPHIC SIGNIFICANCE OF MACROFOSSILS FROM THE LATE PRECAMBRIAN SEQUENCE IN SOUTHERN LIAONING PROVINCE[J]. Chinese Journal of Geology, 1991, (2): 120-128.
 
没有本文参考文献
[1] 陈孟莪, 肖宗正. 峡东区上震旦统陡山沱组发现宏体化石[J]. 地质科学, 1991, (4): 317-324.
[2] 陈孟莪. 辽东半岛南部晚前寒武纪五行山群南关岭组中的宏体化石[J]. 地质科学, 1990, (4): 315-323.
[3] 陈孟莪. 中国晚前寒武纪的宏体化石概观[J]. 地质科学, 1989, (3): 244-255.
 
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