Sphagnum, a kind of moss, is a characteristic plant of raised bogs in temperate or cool climate. Modern sphagnum peat is distributed extensively over many districts of the whole world. It is very difficult to distingu...Sphagnum, a kind of moss, is a characteristic plant of raised bogs in temperate or cool climate. Modern sphagnum peat is distributed extensively over many districts of the whole world. It is very difficult to distinguish sphagnum remains from the coal after transformation owing to its limited distribution and minute body. It is well known so far that coal deposits mainly derived from sphagnum have not yet been reported in literature. Recently, a lot of unprecedented and bedded coal layers (named the 'white-light coal' by local people) were discovered in a section of thick coal seam located in Jinsuo brown coal basin in Yunnan Province. In a profile of 26-m thick coal seam, there are 19 layers of thick-展开更多
A preliminary study of simulated thermal maturity has been conducted to evaluate the oil, gas and hydrocarbon generation potential of sphagnum coal in the Jinsuo brown coal basin, Yunnan Province and to understand the...A preliminary study of simulated thermal maturity has been conducted to evaluate the oil, gas and hydrocarbon generation potential of sphagnum coal in the Jinsuo brown coal basin, Yunnan Province and to understand the characteristics of the element composition and biomarkers in the course of thermal alteration. The experimental result was compared with that of xylitic coal, a kind of lithotype of soft brown coal. It is considered that sphagnum coal possesses the potential of forming economic accumulation of oil and gas. Its highest proportion of oil and hydrocarbon generation is 510 mg/g Corg. and 232.1 mg/g Corg. respectively. At an R_(ran)~° value of 2.51%, the ratio of gas generation from sphagnum coal attains to 620.5 ml/g Corg. In view of sphagnum coal being different from the conventional soft brown coal in various respects such as coal forming raw materials and enviroments as well as physico-chemical properties, it is Suggested as a special kind of source rock for coal-generated oil and gas.展开更多
文摘Sphagnum, a kind of moss, is a characteristic plant of raised bogs in temperate or cool climate. Modern sphagnum peat is distributed extensively over many districts of the whole world. It is very difficult to distinguish sphagnum remains from the coal after transformation owing to its limited distribution and minute body. It is well known so far that coal deposits mainly derived from sphagnum have not yet been reported in literature. Recently, a lot of unprecedented and bedded coal layers (named the 'white-light coal' by local people) were discovered in a section of thick coal seam located in Jinsuo brown coal basin in Yunnan Province. In a profile of 26-m thick coal seam, there are 19 layers of thick-
基金Presented at Youth Symposium on Organic Geochemistry held in May, 1987 in Guangzhou and supported by Organic Geochemistry Laboratory, Academia Sinica and China Coal Science Foundation.
文摘A preliminary study of simulated thermal maturity has been conducted to evaluate the oil, gas and hydrocarbon generation potential of sphagnum coal in the Jinsuo brown coal basin, Yunnan Province and to understand the characteristics of the element composition and biomarkers in the course of thermal alteration. The experimental result was compared with that of xylitic coal, a kind of lithotype of soft brown coal. It is considered that sphagnum coal possesses the potential of forming economic accumulation of oil and gas. Its highest proportion of oil and hydrocarbon generation is 510 mg/g Corg. and 232.1 mg/g Corg. respectively. At an R_(ran)~° value of 2.51%, the ratio of gas generation from sphagnum coal attains to 620.5 ml/g Corg. In view of sphagnum coal being different from the conventional soft brown coal in various respects such as coal forming raw materials and enviroments as well as physico-chemical properties, it is Suggested as a special kind of source rock for coal-generated oil and gas.
