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根据台湾海峡西部10个柱102个样品的X 射线衍射等分析,鉴定了该区粘土矿物组合与含量变化,分析了其与沉积环境的关系.结果表明,该区粘土矿物组合大多数站位以伊利石含量占首位,绿泥石和高岭石次之,且含少量蒙脱石;伊利石含量随距岸、水深的增加而递增,高岭石则反之;蒙脱石含量与火山活动密切相关,绿泥石含量呈斑块状分布;775和819号站有典型的陆相层,为早玉木冰期的“台湾陆桥”或“东山陆桥”提供有力证据.
According to the X-ray diffraction analysis of 102 samples from 10 columns in the western part of Taiwan Strait, the relationship between clay mineral assemblages and their contents was analyzed and their relationship with sedimentary environment was analyzed. The results show that most of the clay mineral assemblages Illite content takes the first place, followed by chlorite and kaolinite, and contains a small amount of montmorillonite; illite content increases with the increase of distance from the shore and water depth, but kaolinite is contrary; the content of montmorillonite is closely related to volcanic activity, The chlorite content is patchy. The stations 775 and 819 have typical continental facies, which provide strong evidence for the “Taiwan Land Bridge” or “Dongshan Land Bridge” in the Early Tamaki Ice Age.