globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2014.01.004
论文题名:
40Ar/39Ar age constraints on Cretaceous fossil-bearing formations near the China-North Korea border
作者: Chang S.-C.; Hemming S.R.; Gao K.-Q.; Zhou C.-F.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2014
卷: 396
起始页码: 93
结束页码: 98
语种: 英语
英文关键词: 40Ar/39Ar dating ; Dandong ; Jehol Biota ; Jehol migration ; Sinuiju
英文摘要: Abundant Mesozoic terrestrial plant, fish and invertebrate fossils have been discovered from the Lishugou Formation and the underlying Xiaolin Formation in the eastern Liaoning province of NE China since the 1970s. These discoveries have great potential for substantially increasing our knowledge on the evolution of paleoecosystems and paleoenvironments in East Asia. However, previous geological and geochronological studies for these fossil-bearing formations are rare because the fossil outcrops are near the border between China and North Korea. Here we present robust 40Ar/39Ar ages of 99.9±0.4Ma for one sample from the Lishugou Formation and 109.1±0.2Ma and 122.4±0.2Ma for two samples from the upper and lower parts of the Xiaolin Formation from Dandong City, Liaoning, China. Our new age data indicate that the Lishugou and Xiaolin Formations were deposited contemporaneously with the Jiufotang Formation from the classic Jehol outcrops in western Liaoning. Therefore, our results provide an accurate age calibration for the fossils discovered from the Liaodong Peninsula and suggest that the hypothesis of the Jehol migration should be reappraised. © 2014 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69460
Appears in Collections:过去全球变化的重建

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作者单位: Department of Earth Sciences, The University of Hong Kong, Hong Kong; Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY 10964, United States; Department of Earth and Environmental Sciences, Columbia University, Palisades, NY 10964, United States; School of Earth and Space Sciences, Peking University, Beijing 100871, China; Paleontological Institute, Shenyang Normal University, Shenyang 110034, China

Recommended Citation:
Chang S.-C.,Hemming S.R.,Gao K.-Q.,et al. 40Ar/39Ar age constraints on Cretaceous fossil-bearing formations near the China-North Korea border[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2014-01-01,396
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