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泥河湾盆地上新世生物地层序列与环境

ISSN号：1000-3118
期刊名称：《古脊椎动物学报》
时间：0
分类：P534.622[天文地球—古生物学与地层学;天文地球—地质学]
作者机构：[1]中国科学院古脊椎动物与古人类研究所脊椎动物进化系统学重点实验室,北京100044, [2]厦门大学历史系,厦门361005
相关基金：国家自然科学基金项目（编号：40472012,40730210）,中国科学院知识创新工程重要方向项目（编号：KZCX2-YW-120）和国家基础科学特殊学科点人才培养基金（编号：J0630965）资助.致谢美国南加州大学的曾志杰（Jack Tseng）博士审阅并修改了英文摘要,在此表示衷心感谢.

关键词：泥河湾盆地, 上新世, 哺乳动物, 生物地层序列, 环境, Nihewan Basin, Pliocene, mammals, biostratigraphic sequence, environment

中文摘要：

总结了泥河湾盆地晚上新世生物地层，讨论了12个剖面含哺乳动物化石层位的相互关系，以稻地老窝沟剖面的地层顺序为基础排列出约3．7～2．6Ma时段内的9个代表性的生物地层单位。哺乳动物以Paenelimnoexcus chinensis、Lunanosorex cf．L.lii、Trischizolagus 、Pliopentalagus nihewanicus、Ungaromys、Mimomys sp．、Chardina truncatus、Mesosiphneus praetingi、M.paratingi、Pliosiphneus lyratus、Pseudomeriones complicidens、Castor anderssoni、Huaxiamys downsi、Chardinomys yusheensis、C．nihowanicus、Hipparion houfenense和Gazella blacki组合为特征。动物群在时代上与榆社麻则沟动物组合、静乐红土动物群、灵台雷家河剖面V带及任家沟静乐红粘土动物组合、宁县水磨沟动物组合、游河动物群及沂南棋盘山洞穴动物组合相当。动物群所反映的是温带草原为主、间有树林和干草原的稀树草原环境。

英文摘要：

A sequence of fluvio-lacustrine and paludine deposits with thickness over 150 meters occurs in the Nihewan Basin, Hebei, China （Yuan et al., 1996; Min et al., 2006）. A series 46 of - 30 m （ = ＂90 feet＂） thick red homogeneous clay exposured near the Sanggan River Gorge （ = Shixia） was originally considered as the weathering matter of the base rocks （ Barbour et al., 1926）. Due to the absence of fossils, its age once was speculated to belong to the Pontian （Teilhard and Piveteau, 1930） or the Late Miocene Baodean （Black et al., 1933）. However, a sequence of - 30 m thick red gravel-bearing clay at the bottom of the section of Dahonggou in Shixia was named as ＂Dahonggou Formation＂ by Chen （1988）. At the same time, the -12 m and -7 m thick red clays in the lower part of the Hongya Nangou and Pump Station, respectively, were also included into this Pliocene formation. A series of 20 -30 m thick redish or yellow-redish alternating sandy clay and gravel beds are exposed in the Luanshigedagou near Hongya village. Yielding Hipparion and Chilotherium, this deposit was considered to belong to the ＂Hipparion Red Clay＂ with a Pliocene age （Huang et al., 1974 ）. The sequence of -45 m thick red clay containing sandy gravel and lens of calcareous nodules in the Huabaogou near Xiyaozitou village was divided into the upper ＂Yuxian Formation＂ and the lower ＂Huliuhe Formation＂ by the composition of large fossil mammals. These two formations were respectively correlated to be equal in age to the Pliocene Jingle Formation and the Late Miocene Bahe Formation （ Wang, 1982）. In view of the illegibility of the boundary and the lack of significant differences in the fossil faunas between these two formations, Zhang et al. （2003） incorporated them both in the Late Pliocene Yuxian Formation. A series of fluvio-lacustrine and paludine deposits exposed on the both sides of the Huliu River were named ＂Daodi Formation＂ and considered of Late Pliocene age （Du et al., 1988 ）. The

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