摘要
本文根据武汉地区不同地貌单元、不同层位钻井岩心砂(岩)样品15组,计2000余粒石英砂,进行扫描电镜表面形态研究和分组X射线能谱元素组合分析,论证本地区自晚第三纪至第四纪全新世的沉积物是近源物质在时空分布上属多次阶段性沉积物环境的产物,即为石英砂脱离母岩—以河网交错为特色的大陆水下环境—风化和成岩作用的模式。在青山这个特定的地貌单元上,于大陆水下环境沉积之后,再次经受较强烈风扬磨蚀作用。
Based on the different geomorphic units in Wuhan area and the fifteen groups of drill-core samples having two thousand grains of quartz sand in total, this paper makes the identification of scanning electron microscopy in morphology and the combined analyses of x-ray energy spectra elements in accordance with each group.It is demonstraed that deposits of this area from Neogene period to Holocene epoch in Quaternary period is products of near-by source materials belonging to repeatedly sedimentary environment in stages at time-spatal distributions. i. e. quartz sand separating itself from wother rock-subagueous environment on continent characterized by rivernet alternating-weathering and diagenesis. This paper also desribes that aftef depositing at continent-subagueous environment, the particular geomorphic unit of Qing shan is once again subjected to a violent wind adrasion.
出处
《长江科学院院报》
CSCD
北大核心
1989年第2期44-52,共9页
Journal of Changjiang River Scientific Research Institute
