A potential terrestrial Albian–Cenomanian boundary in the Yanji Basin, Northeast China
A potential terrestrial Albian–Cenomanian boundary in the Yanji Basin, Northeast China
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中国东北延吉盆地潜在的陆地阿尔布-塞诺曼边界
DOI：
10.1016/j.palaeo.2020.110088
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发表时间：
2020-10
期刊：
影响因子：
--
通讯作者：
Yanhong Pan
中科院分区：
文献类型：
--
作者：
Yuting Zhong;Yaqiong Wang;Baoyan Jia;Man Wang;Liang Hu;Yanhong Pan
阿尔比-森诺曼（Albian-Cenomanian，A-C）过渡期是动物和开花植物共同进化的重要时期，也是恐龙和哺乳动物在大陆上多样化的重要时期。由于当时世界范围内缺乏陆地沉积，并且很难将海相和非海相地层直接对比，只有少数研究讨论了陆地A-C边界;因此，与其他地层边界相比，它仍然知之甚少。中国东北地区拥有世界上最完整、最连续的白垩纪陆相层序，是研究陆相A-C界线的理想地区。本文报道了延吉盆地大喇子组上部西姆斯U-Pb年龄为105.14 ± 0.37Ma。其他介形类生物地层学数据表明，整合覆盖龙井组的Albian至Cenomanian年龄。新的综合地质年代学和生物地层学数据与先前发表的年代学数据的比对表明，延吉盆地龙井组内存在潜在的陆地A-C边界。该研究为延吉盆地主要陆生动物群和植物群的演化提供了一个更新、精确的年代地层格架，对中国东北地区的白垩纪陆生生物年代学作出了新的贡献。
The terrestrial Albian–Cenomanian (A–C) transition was an important time interval for the co-evolution of animals and flowering plants, as well as for the diversification of dinosaurs and mammals on continents. Due to a worldwide lack of terrestrial sedimentation at that time, and the difficulty of direct correlation between marine and non-marine stratigraphy, only a few studies have discussed the terrestrial A–C boundary; therefore, it remains poorly understood compared with other stratigraphic boundaries. Northeast China is an ideal place to study the terrestrial A–C boundary because the area contains the most complete and continuous terrestrial Cretaceous succession in the world. Here, we report a SIMS U-Pb zircon age of 105.14 ± 0.37 Ma for the uppermost part of the Dalazi Formation in the Yanji Basin. Additional ostracod-based biostratigraphic data indicate an Albian to Cenomanian age for the conformably overlying Longjing Formation. Alignment of the new comprehensive geochronological and biostratigraphic data with previously published chronological data suggests that a potential terrestrial A–C boundary occurs within the Longjing Formation of the Yanji Basin. This study provides an updated, precise chronostratigraphic framework for the evolution of the major terrestrial faunas and flora in the Yanji Basin, and represents a new contribution to the terrestrial Cretaceous timescale recorded in northeast China.
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DOI：
--
发表时间：
2012
期刊：
Journal of stratigraphy
影响因子：
--
作者：
Deng Shenghui
通讯作者：
Deng Shenghui
影响因子：
2.1
作者：
Gang Li;T. Ohta;D. Batten;D. Batten;T. Sakai;T. Kozai
通讯作者：
Gang Li;T. Ohta;D. Batten;D. Batten;T. Sakai;T. Kozai
DOI：
10.1016/j.palaeo.2008.02.008
发表时间：
2008-06
期刊：
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子：
--
作者：
J. Sha;H. Hirano;X. Yao;Yan-Hong Pan
通讯作者：
J. Sha;H. Hirano;X. Yao;Yan-Hong Pan
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影响因子：
1.9
作者：
Yang, Xiao-Ju;Guignard, Gaetan;Barale, Georges
通讯作者：
Barale, Georges
影响因子：
5
作者：
Ludwig, KR
通讯作者：
Ludwig, KR