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首页> 外文期刊>Frontiers of earth science >Major transgression during Late Cretaceous constrained by basin sediments in northern Africa: implication for global rise in sea level
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Major transgression during Late Cretaceous constrained by basin sediments in northern Africa: implication for global rise in sea level

机译：北非盆地沉积物限制的晚白垩纪海侵：对全球海平面上升的影响

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摘要

The global rise in sea level during the Late Cretaceous has been an issue under discussion by the international geological community. Despite the significance, its impact on the deposition of continental basins is not well known. This paper presents the systematic review on stratigraphy and sedimentary facies compiled from 22 continental basins in northern Africa. The results indicate that the region was dominated by sediments of continental facies during Early Cretaceous, which were replaced by deposits of marine facies in Late Cretaceous. The spatio-temporal distribution of sedimentary facies suggests marine facies deposition reached as far south as Taoudeni-Iullemmeden-Chad-Al Kufra-Upper Egypt basins during Turonian to Campanian. These results indicate that northern Africa underwent significant transgression during Late Cretaceous reaching its peak during Turonian to Coniacian. This significant transgression has been attributed to the global high sea-level during this time. Previous studies show that global rise in sea level in Late Cretaceous may have been driven by an increase in the volume of ocean water (attributed to high CO2 concentration and subsequently warm climate) and a decrease in the volume of the ocean basin (attributed to rapid production of oceanic crust and seamounts). Tectonic mechanism of rapid production of oceanic crust and seamounts could play a fundamental role in driving the global rise in sea level and subsequent transgression in northern Africa during Late Cretaceous.
机译：白垩纪晚期全球海平面上升一直是国际地质界正在讨论的问题。尽管具有重要意义，但其对大陆盆地沉积的影响尚不清楚。本文介绍了从北非22个大陆盆地汇编的地层和沉积相系统综述。结果表明，该地区以白垩纪早期的陆相沉积为主，被白垩纪晚期的海相沉积所取代。沉积相的时空分布表明，在Turonian到Campanian期间，海洋相沉积一直延伸到南部的陶德尼-伊勒梅梅登-查德-库夫勒-上埃及盆地。这些结果表明，北非在白垩纪晚期经历了海侵，并在突厥至柯尼西亚时期达到顶峰。这次重大入侵是由于这段时间全球海平面高。先前的研究表明，白垩纪晚期海平面的全球上升可能是由于海水量的增加（归因于高的CO2浓度和随后的温暖气候）和海盆量的减少（归因于快速生产大洋地壳和海山）。大洋地壳和海山的快速生成的构造机制在推动全球海平面上升以及白垩纪晚期北非随后的海侵方面可以发挥根本作用。

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  • 来源
    《Frontiers of earth science》 |2017年第4期|740-750|共11页
  • 作者

    An Kaixuan; Chen Hanlin; Lin Xiubin; Wang Fang; Yang Shufeng; Wen Zhixin; Wang Zhaoming; Zhang Guangya; Tong Xiaoguang;

  • 作者单位

    Zhejiang Univ, Sch Earth Sci, Hangzhou 310027, Zhejiang, Peoples R China|Minist Educ, Res Ctr Struct Oil & Gas Bearing Basins, Hangzhou 310027, Zhejiang, Peoples R China;

    Zhejiang Univ, Sch Earth Sci, Hangzhou 310027, Zhejiang, Peoples R China|Minist Educ, Res Ctr Struct Oil & Gas Bearing Basins, Hangzhou 310027, Zhejiang, Peoples R China;

    Zhejiang Univ, Sch Earth Sci, Hangzhou 310027, Zhejiang, Peoples R China|Minist Educ, Res Ctr Struct Oil & Gas Bearing Basins, Hangzhou 310027, Zhejiang, Peoples R China;

    Zhejiang Univ, Sch Earth Sci, Hangzhou 310027, Zhejiang, Peoples R China|Minist Educ, Res Ctr Struct Oil & Gas Bearing Basins, Hangzhou 310027, Zhejiang, Peoples R China;

    Zhejiang Univ, Sch Earth Sci, Hangzhou 310027, Zhejiang, Peoples R China|Minist Educ, Res Ctr Struct Oil & Gas Bearing Basins, Hangzhou 310027, Zhejiang, Peoples R China;

    Minist Educ, Res Ctr Struct Oil & Gas Bearing Basins, Hangzhou 310027, Zhejiang, Peoples R China|PetroChina Co Ltd, Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China;

    PetroChina Co Ltd, Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China;

    PetroChina Co Ltd, Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China;

    China Natl Oil & Gas Explorat & Dev Corp, Beijing 100083, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    global sea-level changes; Late Cretaceous; transgression; sedimentary facies; northern Africa;

    机译：全球海平面变化;白垩纪晚期;海侵;沉积相;北非;

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