IN THE CENTRE OF THE EASTERN YELLOW RIVER COALFIEID COSMIC SPHERULES BEING FOUND AT FIRST IN LATE PALAEOZOIC COALBEARING SERIES AND ITS FEATURE

Cosmic spherules is a kind of the important material from the solar system. We found sedimentary cosmic spherules in the rocks of Late Palaeozoic coal- bearing series of the eastern Yellow River Coalfield, while studying the sedimentary of the coalfield with binocular and scanning electronic microscope. The surface features of micro-textures being found as follow: irregular holorystallines, miarlitre, resortive, warty, calaclastic spherulitic, hollow-prism and plicated structure, totalling 8 types According to the chemical compositions measured by electronic probing, there arc three kinds of cosmic spherules such as glassy, silicate and ferrous spherules in this district This is similar 10 the cosmic spherules which have been reported in the chemical compositions. And the content Ir (being called as "dactylotype element") is high, up to 1.09%, in the ferrous cosmic spherules. The fact that It is. found so much in the spherules has proved the spherules is really a kind of material from outer planet. Studying cosmic spherules contributes to knowing the originality and evolution of soiar system and the cause of extinct or degcnevalion of creatures. Meanwhile, its studying has widely been used in cosmography, astronautics, oceanography, physics, astronomic geology and geological exploration and so on.