气候变化领域集成服务门户(CCPortal): Enhancement of organic matter maturation because of radiogenic heat from uranium: A case study from the Ordos Basin in China

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DOI	10.1306/06071817107
	Enhancement of organic matter maturation because of radiogenic heat from uranium: A case study from the Ordos Basin in China
	Zhang F.; Jiao Y.; Wu L.; Rong H.; Li J.; Wan D.
发表日期	2019
ISSN	0149-1423
卷号	103 期号:1
英文摘要	Carbonaceous debris (CD) within uranium-bearing strata has been studied in theDaying uranium deposit of the northern Ordos Basin, northern China. The influence of radiogenic heat from uranium on organic matter maturation was investigated through a series of tests includingmeasurements of vitrinite reflectance (Ro), fission-track (FT) analysis in quartz grains, and the calculation of the radiogenic heat production rate of the samples. The results show that Ro in uranium-bearing strata generally increases as the burial depth increases, indicating that CD experienced normal burial coalification. However, Ro values of the samples rich in uranium are 0.062% Ro higher than those without uranium mineralization. Vitrinite reflectance bears a positive relationship with uranium content, and an inverse relationship with distance to the closest sandstone rich in uranium, indicating that uranium enrichment enhances organic matter maturation. The production of uranium decay makes FT observable in quartz grains, and the intensity of decay increases with proximity to the uranium ore body. The calculated radioactive heat production rate from the uranium ore body is 6.857 10 -5 W/m 3 . During the long-term stable decay, as the uranium ore body theoretically results in an abnormal increase in temperature of 52°C without consideration of the loss of heat conduction, heat convection, and thermal radiation, this would yield a theoretical Ro increase of 0.209% Ro, reasonably greater than the observed. Therefore, the long-term stable radiogenic heat produced by uranium ore body can slightly enhance organic matter maturation, which is instructive in uranium prospecting. © 2019. The American Association of Petroleum Geologists.
语种	英语
scopus关键词	Biogeochemistry; Biological materials; Fission reactions; Heat conduction; Heat convection; Heat radiation; Metamorphic rocks; Ores; Organic compounds; Quartz; Reflection; Uranium; Inverse relationship; Northern Ordos Basin; Organic matter maturations; Radiogenic heat production; Uranium enrichment; Uranium mineralization; Uranium prospecting; Vitrinite reflectance; Uranium deposits; coalification; mineralization; ore body; organic matter; sandstone; uranium; vitrinite reflectance; China; Ordos Basin
来源期刊	AAPG Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/125086
作者单位	Key Laboratory of Tectonics and Petroleum Resources, China University of Geosciences, Ministry of Education, Wuhan, China; Faculty of Earth Resources, China University of Geosciences, Wuhan, China; Civil Engineering Branch, Construction Management Center, China Nuclear Power Engineering Co.,Ltd., Shenzhen, China; China National Offshore Oil Corporation (CNOOC), EnerTech-Drilling and Production Co., Tianjin, China
推荐引用方式 GB/T 7714	Zhang F.,Jiao Y.,Wu L.,et al. Enhancement of organic matter maturation because of radiogenic heat from uranium: A case study from the Ordos Basin in China[J],2019,103(1).
APA	Zhang F.,Jiao Y.,Wu L.,Rong H.,Li J.,&Wan D..(2019).Enhancement of organic matter maturation because of radiogenic heat from uranium: A case study from the Ordos Basin in China.AAPG Bulletin,103(1).
MLA	Zhang F.,et al."Enhancement of organic matter maturation because of radiogenic heat from uranium: A case study from the Ordos Basin in China".AAPG Bulletin 103.1(2019).