| REE Geochemical Study of the Permian—Triassic Marine Sedimentary Environment in Guizhou Province |
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| 引用本文： | 南君亚,刘丛强,周德全,王筑明.REE Geochemical Study of the Permian—Triassic Marine Sedimentary Environment in Guizhou Province[J].中国地球化学学报,2002,21(4):348-361. |
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| 作者姓名： | 南君亚 刘丛强 周德全 王筑明 |
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| 作者单位： | [1]StakeKeyLaboratoryofEnvironmentalGeochemistry,InstiteofGeochemistry,ChineseAcademyofSciences,Guiyang550002,China [2]ResearchInstitutionofRegionalGeologicalSurveying,GuizhouProvincialBu |
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| 摘 要： | This paper deals with the REE geochemical characteristics of Permian-Triassic marine carbonate rocks in Guizhou Province.It is found that there are two broad categories of strati-graphic units in the region studied in accordance with their ΣREE contents and REE distribu-tion patterns: one is characterized by LREE enrichment and slight Ce depletion,with the REE distribution patterns similar to those of North American shales,and the other featrures relative HREE enrichment and relatively remarkable Ce depletion,with the REE distribution patterns close to those of pelagic sediments.In terms of their different ΣREE contents,five types of stratigraphic units can be distinguished.Incorporation of detrital minerals,REE complexing ca-pability,oxidation-reduction conditions of the media are the main factors affecting the REE com-position and REE distribution patterns of marine carbonate rocks in the region studied.In the light of REE geochemical characteristics of carbonate rocks,coupled with sedimentary facies analysis,this paper discusses the characteristics of the Permian-Triassic marine sedimentary environment in Guizhou Province and its evolutional rules.
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| 关 键 词： | 二叠纪 沉积环境 稀土元素 贵州 三叠纪 海相沉积 地球化学 |
REE geochemical study of the Permian-Triassic marine sedimentary environment in Guizhou Province |
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| Nan Junya,Liu Congqiang,Zhou Dequan,Wang Zhuming.REE geochemical study of the Permian-Triassic marine sedimentary environment in Guizhou Province[J].Chinese Journal of Geochemistry,2002,21(4):348-361. |
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| Authors: | Nan Junya Liu Congqiang Zhou Dequan Wang Zhuming |
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| Institution: | (1) State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 550002 Guiyang, China;(2) Research Institution of Regional Geological Surveying, Guizhou Provincial Bureau of Geology and Mineral Resources, 550005 Guiyang, China |
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| Abstract: | This paper deals with the REE geochemical characteristics of Permian-Triassic marine carbonate rocks in Guizhou Province.
It is found that there are two broad categories of stratigraphic units in the region studied in accordance with their Σ REE
contents and REE distribution patterns: one is characterized by LREE enrichment and slight Ce depletion, with the REE distribution
patterns similar to those of North American shales, and the other features relative HREE enrichment and relatively remarkable
Ce depletion, with the REE distribution patterns close to those of pelagic sediments. In terms of their different Σ REE contents,
five types of stratigraphic units can be distinguished. Incorporation of detrital minerals, REE complexing capability, oxidation-reduction
conditions of the media are the main factors affecting the REE composition and REE distribution patterns of marine carbonate
rocks in the region studied. In the light of REE geochemical characteristics of carbonate rocks, coupled with sedimentary
facies analysis, this paper discusses the characteristics of the Permian-Triassic marine sedimentary environment in Guizhou
Province and its evolutional rules.
This research project was financially supported by the National Natural Science Foundation of China (Grant Nos. 94625304,
49973005). |
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| Keywords: | Permian-Triassic sedimentary environment REE geochemistry Guizhou Province |
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