试论江苏徐州地区金伯利岩产出的可能性

On the Probability of Kimberlite Occurrence in Xuzhou Area of Jiangsu Province

金伯利岩形成的构造环境 根据J.B.道森的定义,金伯利岩是具有斑状结构的蛇纹石化和碳酸盐化的云母——橄榄岩。含有以高压矿物如镁铝榴石和硬玉质透辉石为特征的超基性岩类结核。

Abstract: There exist a good tectonic metallogenic conditions in Xuzhou area. Since the Mesozoic era there have occurred many times strong tectonic movements in this area. Especially, from the Middle Jurassic seres to the tower Cretaceous series, a series of faults and basins were formed by a strong and compressive stress. Located in the ancient Sino-Korean platfrom, the large scale of Tanlu deep-fracture zone of the eastern Xuzhou nave a similar tectonic condition to the localities of Kimberlite in Shandong and Liaoling Provinces. Well-developed volcanic rocks in Xuzhou-Huaiyin area have also a similar conditions to Kimberlite in the world. The western parts of Fengx-ian, Peixian, Tongshanxian and Pixian Counties in Xuzhou area will be a prospective region for the discovery of Kimberlite. Some measures should be carried out during detailed geolgical exploration of Kimberlite in Xuzhou including the different scale magnetic methods to search the Kimberlite pipes or veins; sufficiently applications of the heavy mineral data and the comprehensive prospecting methods.