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题名: The oleaginous Botryococcus from the Triassic Yanchang Formation in Ordos Basin, Northwestern China: Morphology and its paleoenvironmental significance
作者: Ji, Li-ming ; Yan, Kui ; Meng, Fan-wei ; Zhao, Min
刊名: JOURNAL OF ASIAN EARTH SCIENCES
出版日期: 2010
卷号: 38, 期号:5, 页码:175-185
关键词: Ordos Basin ; Triassic ; Yanchang Formation ; Hydrocarbon source rocks ; Botryococcus ; Paleoenvironment
学科分类: Geosciences, Multidisciplinary
英文摘要: We use field investigations, topographic profiles, and (10)Be exposure dating to constrain the growth rate of the Yumu Shan, a thrust-bounded mountain range at the northeastern margin of Tibet. Wind gaps, fault scarps at the mountain front, and hanging paleocatchments indicate that the Yumu Shan is growing both laterally and vertically. Scarp profiles and (10)Be ages yield rock uplift rates of similar to 500 and similar to 800 mm ka(-1) for the eastern and central parts of the range, respectively. The fact that the rock uplift rate in the high center of the Yumu Shan exceeds catchment-wide (10)Be denudation rates, which range from similar to 180 to similar to 280 mm ka(-1), indicates that the mountain range continues to rise and has not yet reached a topographic steady state. Combining the total structural relief of the range with the rates of rock uplift and denudation suggests that the growth of the Yumu Shan started 3.7 +/- 0.9 Ma ago. Citation: Palumbo, L., R. Hetzel, M. Tao, X. Li, and J. Guo (2009), Deciphering the rate of mountain growth during topographic presteady state: An example from the NE margin of the Tibetan Plateau, Tectonics, 28, TC4017, doi: 10.1029/2009TC002455.
收录类别: SCI
所属项目名称: Chinese Academy of Sciences [CAS2002-404-01]; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology [073105]
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.lig.ac.cn/handle/132962/2105
Appears in Collections:油气地球化学研究室_期刊论文

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Ji, Li-ming; Yan, Kui; Meng, Fan-wei; Zhao, Min.The oleaginous Botryococcus from the Triassic Yanchang Formation in Ordos Basin, Northwestern China: Morphology and its paleoenvironmental significance,JOURNAL OF ASIAN EARTH SCIENCES,2010,38(5):175-185
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