Abstract
Relative contents of ferrodolomite in source rocks identified by Mössbauer effect can be used to deduce the maturity of source rocks.22 samples collected from 3 drill holes in Jurong County,Jiangsu Province,the Middle-Lower Triassic,Permian and Lower Silurian in age,are studied with this technique.The results suggest that Middle Triassic sediments are immatured or lowmatured source rocks,the ferrodolomite of them could hardly be found or found in the bottom,whereas Lower Triassic sediments are matured,the ratio of the iron contents of ferrodolomite to total iron increases with the increases of burial depth of the formation,and the ratio of mudstone samples is lower than that of limestone samples.As for the Lower Siluriam,Lower Permiam and the coal-series of the lower part of Upper Permian,the dolomite contents are naught possibly in relation to that they are supermatured.
论文详情