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几乎所有关于泥河湾层的著述中,皆或多或少地涉及泥河湾层形成的古地理环境问题.早在二十年代,Barbour,G.B.和Licent,E.等人,即根据泥河湾动物群的性质,认为泥河湾期相当温暖湿润,同时也指出该层上部的蒸发岩,标志着后期气候变干的趋势.六十年代以来,北京大学等单位,对湖盆演变及其与新构造运动关系等问题,做了较为详细的研究.近年来微体古生物的研究,提供了大量的古气候信息.周昆叔研究了红崖南沟剖面下部孢粉谱,认为这里记录了一个“冷期”.刘金陵(1980)研究了虎头梁剖面下部孢粉谱,认为它代表一种“凉——北方型”气候.任振纪研究了蔚县142钻孔孢粉组合,认为泥河湾层记录了三个“冷期”.汪品先等(1975)在东窑子头发现的有孔虫
Almost all of the writings on the Nihewan Formation relate more or less to the paleogeographic and environmental problems formed in the Nihewan Formation.As early as the 1920s, Barbour, GB and Licent, E. et al. Bay fauna, which is considered to be quite warm and humid in the Nihewan period, and also points out that the evaporites in the upper part of the layer signify a tendency of the later climate to become dry. Since the 1960s, Peking University And neotectonic movement and other issues, made a more detailed study.In recent years, the study of microfacies paleontology, providing a large number of paleoclimate information.Zhou Kun Shu study of the lower part of the Red Cliff Nangou profile spore spectrum, that here records a “ Cold period. ”Liu Jinling (1980) studied the sporopollen spectrum in the lower part of the Hutotai section and considered it to be a“ cool-northern type. ”Ren Zhenji studied the sporopollen assemblage in Yuxian 142 boreholes, The layers record three “cold periods.” Wang Pinxian et al. (1975) Foraminifera found in Dongyaozi