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Discussion on the Neoproterozoic glaciations in the South China Block and their related paleolatitudes
  • ISSN号:1005-2321
  • 期刊名称:《地学前缘》
  • 时间:0
  • 分类:P532[天文地球—古生物学与地层学;天文地球—地质学] P534.3[天文地球—古生物学与地层学;天文地球—地质学]
  • 作者机构:[1]State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029,China
  • 相关基金:Supported by National Natural Science Foundation of China (Grant Nos. 40532012 and 40373011) and the Chinese Academy of Sciences (Grant No. KZCX3-SW-141).We are grateful to Profs. Zhang Shihong and Huang Baochun for their comments; and special thanks are given to Prof. Zheng Yongfei for improving the manuscript. This is a contribution to IGCP 512.
中文摘要:

Kaigas, Sturtian, Marinoan,和 Gaskiers 冻结成冰广泛地在 Neoproterozoic 被认出。然而,在华南块,仅仅 Jiangkou (Sturtian ) 和 Nantuo (Marinoan ) 被沉积记录象征。Kaigas,由同位素、化学的代理记录了,多半与本地山冻结成冰展出了冷古气候的性质。有 Gaskiers 的 Doushantuo 形成的关联被碳同位素旅行和过时的年龄从间隔显示,然而,华南块当时在非冰川的天气下面。没有 paleomagnetic 数据,华南块的位置不能在 Sturtian 冻结成冰期间是坚定的。华南块的 paleolatitudes 在 Kaigas 和 Nantuo 冻结成冰期间是中间的,尽管 Nantuo 曾经被使变为古怪地推出了赤道。事实上,华南块的 paleolatitudes 都在大约 30 °在 Neoproterozoic 冻结成冰期间是可能的 40 °。

英文摘要:

The Kaigas, Sturtian, Marinoan, and Gaskiers glaciations are widely recognized in Neoproterozoic. However, in the South China Block only the Jiangkou (Sturtian) and Nantuo (Marinoan) are symbolized by sedimentary records. The Kaigas, recorded by isotopic and chemical proxies, exhibited likely the nature of cold paleoclimate with local mountain glaciation. The correlation of the Doushantuo Formation with the Gaskiers is indicated by the carbon isotope excursion and the dated age from the interval, however the South China Block was then under non-glacial weather. With no paleomagnetic data, the position of the South China Block during the Sturtian glaciation cannot be determined. The paleolatitudes of the South China Block during the Kaigas and Nantuo glaciations are intermediate, even though the Nantuo was once rendered erratically deduced equatorial. In fact, the paleolatitudes of the South China Block during the Neoproterozoic glaciations are all likely at about 30°-40°.

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期刊信息
  • 《地学前缘》
  • 中国科技核心期刊
  • 主管单位:教育部
  • 主办单位:中国地质大学(北京) 北京大学
  • 主编:王成善
  • 地址:北京市学院路29号
  • 邮编:100083
  • 邮箱:frontier@cugb.edu.cn
  • 电话:010-82322973
  • 国际标准刊号:ISSN:1005-2321
  • 国内统一刊号:ISSN:11-3370/P
  • 邮发代号:
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  • 被引量:34961