Strontium isotope evolution of Middle Permian seawater in the Sichuan Basin, South China: Possible causes and implications
Strontium isotope evolution of Middle Permian seawater in the Sichuan Basin, South China: Possible causes and implications
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四川盆地中二叠世海水锶同位素演化：可能的原因和意义
DOI：
10.1016/j.palaeo.2020.110188
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发表时间：
2021-01
影响因子：
3
通讯作者：
Chen Anqing
中科院分区：
文献类型：
--
作者：
Li Qian;Yang Shuai;Azmy Karem;Chen Hongde;Hou Mingcai;Wang Zhengjiang;Xu Shenglin;Yang Di;Zhang Xihua;Chen Anqing
扬子地台四川盆地千佛剖面和云大地3井的海相碳酸盐岩记录了中二叠统87 Sr/86 Sr的变化。泥晶碳酸盐岩的岩相学和地球化学检查证实，保存近primary 87 Sr/86 Sr的签名，可用于构建一个可靠的高分辨率Sr同位素剖面的赤道东古特提斯全球相关性。高87 Sr/86 Sr比值与海平面海退事件在晚Capitanian（晚中二叠世）意味着陆源物质的主要贡献。我们观察到极低的87 Sr/86 Sr比率（约。0.7068至0.7069）在40米厚的Capitanian间隔，确认了重要的化学地层幕称为Capitanian最小。全球低的87 Sr/86 Sr值在中二叠世可能是由于弱大陆风化率，抑制河流通量进入海洋在盘古组装，并增加热液通量进入海洋与开放的中二叠世的新特提斯。根据千佛剖面和云大地3井泥晶碳酸盐岩的87 Sr/86 Sr值，大量的非放射成因Sr可能来自与峨眉山LIP有关的强烈海底热液活动，靠近火山活动的地区受到的影响更强烈。这些综合因素是造成四川盆地87 Sr/86 Sr比值偏低的原因。
Middle Permian87Sr/86Sr variations are recorded by the marine carbonates in the Qianfo section and the Yundadi3 well in the Sichuan Basin of the Yangtze Platform, China. Petrographic and geochemical examinations of micritic carbonates confirmed the preservation of near-primary87Sr/86Sr signatures that can be utilized to construct a reliable high-resolution Sr isotope profile of the equatorial eastern Paleo-Tethys for global correlations. The high87Sr/86Sr ratios associated with a eustatic regression event in the Late Capitanian (late Middle Permian) imply a predominant contribution from terrigenous materials. We observed extremely low87Sr/86Sr ratios (ca. 0.7068 to 0.7069) in the 40 m-thick Capitanian interval, confirming the significant chemostratigraphic episode called the Capitanian Minimum. Globally low87Sr/86Sr values in the Middle Permian were probably caused by weak continental weathering rates, suppressed riverine flux into the ocean during Pangean assembly, and increased hydrothermal flux into the ocean associated with the opening of the Neotethys during the Middle Permian. Based on the87Sr/86Sr values of micritic carbonates from the Qianfo section and the Yundadi3 well, large amounts of nonradiogenic Sr may have been derived from strong submarine hydrothermal activity related to the Emeishan LIP, and areas closer to volcanic activity were more strongly affected. These combined factors were responsible for the observed low87Sr/86Sr ratios in the Sichuan Basin.
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影响因子：
5.3
作者：
G. Muttoni;D. Kent;E. Garzanti;P. Brack;N. Abrahamsen;M. Gaetani
通讯作者：
G. Muttoni;D. Kent;E. Garzanti;P. Brack;N. Abrahamsen;M. Gaetani
瓜达卢普阶-洛平阶边界生物大灭绝后珊瑚礁生态系统的恢复：来自华南来宾地区的证据
DOI：
10.1016/j.palaeo.2017.08.027
发表时间：
2017-08
期刊：
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子：
--
作者：
Yuangeng Huang;Zhong-Qiang Chen;Laishi Zhao;George D. Stanley Jr;Jiaxin Yan;Yu Pei;Wanrong Yang;Junhua Huang
通讯作者：
Junhua Huang
影响因子：
3.5
作者：
Hu Huang;Peter A. Cawood;Mingcai Hou;S. Ni;Jianghai Yang;Yuansheng Du;Huaguo Wen
通讯作者：
Hu Huang;Peter A. Cawood;Mingcai Hou;S. Ni;Jianghai Yang;Yuansheng Du;Huaguo Wen
华南二叠纪-石炭系台地碳酸盐地层和δ13C记录：对晚古生代冰室气候和冰室-温室转变的响应
DOI：
10.1016/j.palaeo.2016.07.038
发表时间：
2017-05
期刊：
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子：
--
作者：
Chao Liu;Emilia Jarochowska;Yuansheng Du
通讯作者：
Yuansheng Du
影响因子：
6.1
作者：
L. Angiolini;G. Crippa;G. Muttoni;J. Pignatti
通讯作者：
L. Angiolini;G. Crippa;G. Muttoni;J. Pignatti