用磁性地层学方法研究云南江川盆地的成煤时代及沉积速率

Study of Coal—forming Age and Sedimentary Rate by Magnetic Stratigraphic Method

本文用磁性地层学的方法,研究云南江川盆地的成煤时代与沉积速率.通过对江川盆地903孔300多个样品的古地磁研究,根据磁性变化,可知该区的成煤时代属第三纪上新世,进而可算出沉积速率的变化范围为0.006—0.94mm/a。

Based on the paleomagnetic data of more than 300 samples from No. 903 borehole, this paper discusses the coal-forming age and sedimentary rate in Jiangchuan Basin, Yunnan Province. It is shown that the coal basin was deposited during pliocene Epoch (Tr) and the variation of sedimentary rate ranges from 0.006 mm / a to 0.94 mm / a.