Late Mississippian glacio-eustasy recorded in the eastern Paleo-Tethys Ocean (South China)
Late Mississippian glacio-eustasy recorded in the eastern Paleo-Tethys Ocean (South China)
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古特提斯洋东部（华南）记录的密西西比晚期冰川海压期
DOI：
10.1016/j.palaeo.2018.07.021
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发表时间：
2019-10
期刊：
影响因子：
--
通讯作者：
Xiangdong Wang
中科院分区：
文献类型：
--
作者：
Jitao Chen;Qingyi Sheng;Keyi Hu;Le Yao;Wei Lin;Isabel P. Montanez;Xiaoxu Tian;Yuping Qi;Xiangdong Wang
石炭纪和早二叠世期间的长期和广泛的冰川作用一直是过去十年来许多研究的重点，揭示了海平面和气候条件的系统变化。然而，石炭纪冰川作用开始的性质仍然没有得到很好的解决，关于大陆冰盖形成的时间和动力学的不确定性。在这里，我们提出了详细的沉积相和沉积旋回，从东部古特提斯洋地区（中国南方）的上密西西比浅水台和同期碳酸盐岩斜坡序列，以揭示系统的变化，提供洞察的沉积响应石炭纪冰川的开始。根据详细的沉积学测井和相分析，从碳酸盐岩台地雅水剖面识别出4个上维宪旋回和4个Serpukhovian旋回，这些旋回以陆上表面或带或海侵表面为界。旋回顶部大致对应于碳酸盐岩斜坡纳清剖面中富含正常级配生物碎屑杂砂岩至碎屑岩且牙形石δ 18OPO4明显升高（约1‰）的层段。特别是，四个Serpukhovian周期相关的沉积旋回定义在下扬子地台继承的华南和循环的继承在顿涅茨克盆地，乌克兰，建议冰川海平面控制，最有可能造成的反复前进和后退的冈瓦纳冰川在发病期间，但在广泛的冰川跨越中石炭纪边界。
Long-lived and extensive glaciation during the Carboniferous and early Permian has been the focus of many studies over the past decade revealing systematic changes in sea level and climatic conditions. The nature of the inception of Carboniferous glaciation, however, remains poorly resolved with uncertainty regarding the timing and dynamics of buildup of continental ice sheets. Here we present detailed sedimentary facies and depositional cycles from Upper Mississippian shallow-water platform and contemporaneous carbonate slope successions from the eastern Paleo-Tethys Ocean region (South China) to reveal systematic variations that provide insight into the sedimentary response to the onset of Carboniferous glaciation. Based on detailed sedimentological logging and facies analysis, four upper Visean cycles and four Serpukhovian cycles were identified from the carbonate platform Yashui section, bounded by either subaerial surfaces or zones, or transgressive surfaces. The cycle tops roughly correspond to intervals rich in normally graded bioclastic wacke- to packstones and with distinct rises (~1‰) in conodont δ18OPO4in the carbonate slope Naqing section. In particular, the four Serpukhovian cycles correlate well to depositional cycles defined in the Lower Yangtze Platform succession of South China and in the cyclothemic successions in the Donets Basin, Ukraine, suggesting a glacio-eustatic control, most likely caused by repeated advance and retreat of Gondwana glaciation during the onset but prior to widespread glaciation across the mid-Carboniferous boundary.
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DOI：
10.1144/gsl.sp.1964.001.01.21
发表时间：
1964
期刊：
Geological Society, London, Special Publications
影响因子：
--
作者：
E. H. Francis;A. W. Woodland
通讯作者：
E. H. Francis;A. W. Woodland
影响因子：
2
作者：
R. K. Goldhammer;P. Lehmann;P. A. Dunn
通讯作者：
R. K. Goldhammer;P. Lehmann;P. A. Dunn
影响因子：
1.8
作者：
I. Somerville
通讯作者：
I. Somerville
DOI：
10.18814/epiiugs/1999/v22i4/003
发表时间：
1999-12
期刊：
--
影响因子：
--
作者：
H. Lane;P. Brenckle;J. F. Baesemann;B. Richards
通讯作者：
H. Lane;P. Brenckle;J. F. Baesemann;B. Richards
DOI：
10.1146/annurev.earth.031208.100118
发表时间：
2013-06
影响因子：
14.9
作者：
I. Montañez;C. Poulsen
通讯作者：
I. Montañez;C. Poulsen