The Huainan coal field lies in southern part of North China Platform and there are most important coal beds in Upper Permian Formation in the field. The 36 trace elements in 13 coal samples from the Later Permian Period from Panji mine in Huainan coal field were determined using INAA technique. Furthermore, their geochemical features of trace elements and REE are discussed. The trace elements in coal beds show different affinities to organic matter or to minerals, e.g. the elements Br, As, Sb, Ni...
The Huainan coal field lies in southern part of North China Platform and there are most important coal beds in Upper Permian Formation in the field. The 36 trace elements in 13 coal samples from the Later Permian Period from Panji mine in Huainan coal field were determined using INAA technique. Furthermore, their geochemical features of trace elements and REE are discussed. The trace elements in coal beds show different affinities to organic matter or to minerals, e.g. the elements Br, As, Sb, Ni and Co tend to concentrate in coal. Meanwhile, the elements Na, K, Rb, Th, Hf, Zr, Ta and REE are richer in roof and floor rocks. In fact, the detritus finer than 2 μm plays a more important role than hosting these elements. The other elements demonstrate nuclear tendency in coal or in roof and in bedding rocks. The elements Fe, Ca, Sr and HREE correlate with seawater. The elements As, Cs and Ni, vary very much in content and their variant coefficients can exceed 1. Trace elements in coals of Panji mine are relative constant due to absence of effects of strong geological process on the coal beds. The ∑REE ranges from 30×10 -6 to 95×10 -6 in coals and are higher than 200×10 -6 in roof and floor rocks. Moreover their Normalized distribution patterns are very similar with those of Permian coals in other parts of North China. ∑REE decreases in the midst of coal bed but the HREE are relatively richer than of roof rocks.Cluster analysis of some hazardous elements, shows that the elements As, Se, Ag and Fe are in the same group,because they may occur in pyrite and their concentrations rise when swamps or coal beds were affected by seawater. The coals in this field have a relatively lower content and therefore have more security than the others.
There are plenty of peat deposited in the later permian period in Guizhou, which are distributed in large areas. It's very difficult to explore and calculat peat's reserves because of the complex geologic conditions. This paper analyzed peat's distribution in later permian period by GIS and searched a way on quickly calculating peat's reserves.
The huge reserves of oil shale were detected long time ago at the northern foot of the Bogeda Mountain,but unfortunately,their research degree is relatively low.The oil shale occurs in Upper Permian Lucaogou Formation formatted in the highstand systems tract(HST) of deep-lake facies,and belongs to the oil shale of low oil-generating ratio and high volatilization.Based on data of organic element analysis and pyrolysis analysis,the genetic type of the oil shale are classified into mainly sapropelic type(I...
The huge reserves of oil shale were detected long time ago at the northern foot of the Bogeda Mountain,but unfortunately,their research degree is relatively low.The oil shale occurs in Upper Permian Lucaogou Formation formatted in the highstand systems tract(HST) of deep-lake facies,and belongs to the oil shale of low oil-generating ratio and high volatilization.Based on data of organic element analysis and pyrolysis analysis,the genetic type of the oil shale are classified into mainly sapropelic type(I type) and humus-saproptlic type(II_1 type) by the cross-plot method.In the Later Permian period,the Sangonghe was the depositional center of the area.The Sangonghe area is believed to be the most favorable sites for further exploitation and development for huge reserves,high oil yield and simple exploiting conditions anticipated.