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本文通过对岩溶洞穴碎屑沉积物结构特征及其矿物、化学成分的研究,探讨岩溶洞穴的发育和形成的古环境.对洞穴石英砂表面微结构作扫描电镜观察研究,表明贵州构皮滩早期洞穴碎屑是在水动力较强的条件下形成的;对洞穴湖相沉积物作了地球化学特征的对比,从而获得不同的古气候环境.如洛塔洞穴堆积物的地球化学特征反映早中更新世时为温暖湿润的气候,而晚更新世时为较干旱气候;通过洞穴砂的矿物成分分析,探索了洞穴本身的展布,为四川彭水岩溶区东西向洞穴系统的存在提供了证据.
In this paper, the karst caves detrital sediment structural characteristics and mineralogy and chemical composition of the study on the development of karst caves and the formation of the ancient environment on the surface of the cave quartz sand microstructure for scanning electron microscopy study shows that Guizhou Goupitan early Cave detritus is formed under strong hydrodynamic conditions. Comparisons of geochemical characteristics of cave lacustrine sediments resulted in different paleoclimate environments. For example, the geochemical characteristics of the loam cave deposit reflect the characteristics of early Pleistocene climate was warm and humid, while it was drier in the late Pleistocene. Through the analysis of mineral composition of cave sand, the distribution of cave itself was explored, which provided evidence for the existence of east-west cave system in Pengshui karst area of Sichuan Province .