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通过对华北任丘油田某井的粘土矿物的研究,在我国沉积盆地中首次发现了盘状埃洛石矿物,并初步认为它主要是由水铝英石发展而来。它是一种重要的指相矿物,在一定的环境下才能形成并保存下来,对恢复古地理环境、研究有机质变质作用及对比地层,都具有一定意义。 这口井位于华北廊坊—固安凹陷东南边缘,所研究的层位是湖相沉积的下第三系沙河街组沙三中—沙三下段和沙四上
Through the study of clay minerals in a well in Renqiu Oilfield in North China, disc-like halloysite minerals were first discovered in sedimentary basins of China and initially believed to be derived from allophane. It is a kind of important phase mineral, which can be formed and preserved in a certain environment. It is of great significance to the restoration of palaeogeomorphology, the study of the metamorphism of organic matter and the comparison of strata. This well is located in the southeastern margin of Langfang-Gu’an Sag in North China. The studied horizon is the lower third of Shahejie Formation of Shahejie Formation and the lower third of Shahejie Formation of Lacustrine sediments.