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Rare earth element and yttrium (REY) geochemistry in carbonate reservoirs during deep burial diagenesis: Implications for REY mobility during thermochemical sulfate reduction
Jiang, Lei1; Cai, Chunfang1; Worden, Richard H.2; Li, Kaikai3; Xiang, Lei4; Chu, Xuelei1; Shen, Anjiang5; Li, Wenjun6
2015-11-15
Source PublicationCHEMICAL GEOLOGY
Volume415Pages:87-101
SubtypeArticle
AbstractThe impact of burial diagenesis (especially deep burial-related processes such as thermochemical sulfate reduction, TSR) on the distribution of rare earth elements and yttrium (REY) in diagenetic minerals in carbonate reservoir has gained little attention even though they may be unique indicators of the diagenetic system being closed or open to external influx of material. Trace element and REY concentrations, Sr-87/Sr-86, delta O-18 and delta C-13 have been determined for limestone, host dolomite, pore-filling calcite (calcite-2), and late stage fracturefilling calcite (calcite-3), barite (barite-2) and anhydrite (anhydrite-3) from Lower Triassic Feixianguan Formation reservoirs in northeast Sichuan Basin, China. Calcite-2, calcite-3, barite-2, and anhydrite-3 precipitated during deep burial (from 110 degrees C to 220 degrees C), demonstrated by petrology and fluid inclusion thermometry. Sr isotope analysis revealed that diagenetic carbonate minerals and anhydrite have largely identical 87Sr/86Sr ratios to Triassic seawater, indicating negligible input of Sr from terrigenous sources and probably a relatively closed diagenetic environment for precipitation of these minerals. Carbon isotope analysis showed that calcite-2 has relatively low delta C-13 values (down to - 18.9% V-PDB), suggesting that they are TSR calcites with the carbonate derived from oxidized, isotopically-light hydrocarbons. Unlike the seawater-like REY patterns of the limestone and dolomites, calcite-3 and anhydrite-3 are enriched in rare earth elements (Sigma REE) and show light rare earth element enrichment and heavy rare earth element depletion, exhibiting a chevron-like pattern of shale normalized REY trends. In contrast, TSR calcite (calcite-2) has similar SREE to the host dolomite but a relatively flat REYSN pattern, suggesting strong variations in elemental and REE compositions of the burial fluids. Significantly, TSR calcite shows a prominent positive Eu anomaly and an unusually high-chondritic Y/Ho ratio. Both yttrium versus holmium fractionation and Eu2+ oxidation to Eu3+ must have occurred during thermochemical sulfate reduction. Hence, a positive Eu anomaly and an elevated Y/Ho ratio may be used as effective proxies to differentiate calcite resulting from TSR from ordinary calcite cement. This is especially useful when carbon isotope analysis cannot be used to give an unambiguous interpretation of the origin of the calcite. (C) 2015 Elsevier B.V. All rights reserved.
Department油气资源研究室
KeywordThermochemical sulfate reduction (TSR) Rare earth element and yttrium (REY) Carbonate diagenesis Micro thermometry Stable isotope geochemistry Sr-87/Sr-86
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.chemgeo.2015.09.010
Funding OrganizationChina Natural Science Foundation of China(41125009 ; China Natural Science Foundation of China(41125009 ; 13th Five-Year National Key Petroleum Project(2016ZX05008003-040) ; 13th Five-Year National Key Petroleum Project(2016ZX05008003-040) ; International Postdoctoral Exchange Fellowship Program - Office of China Postdoctoral Council (OCPC)(20150035 ; International Postdoctoral Exchange Fellowship Program - Office of China Postdoctoral Council (OCPC)(20150035 ; 41402132 ; 41402132 ; 38) ; 38) ; 40839906) ; 40839906) ; China Natural Science Foundation of China(41125009 ; China Natural Science Foundation of China(41125009 ; 13th Five-Year National Key Petroleum Project(2016ZX05008003-040) ; 13th Five-Year National Key Petroleum Project(2016ZX05008003-040) ; International Postdoctoral Exchange Fellowship Program - Office of China Postdoctoral Council (OCPC)(20150035 ; International Postdoctoral Exchange Fellowship Program - Office of China Postdoctoral Council (OCPC)(20150035 ; 41402132 ; 41402132 ; 38) ; 38) ; 40839906) ; 40839906)
WOS KeywordTRIASSIC FEIXIANGUAN FORMATION ; NORTHEAST SICHUAN BASIN ; MID-ATLANTIC RIDGE ; PUGUANG GAS-FIELD ; HYDROTHERMAL FLUIDS ; TRACE-ELEMENT ; ORDOVICIAN CARBONATES ; STABLE-ISOTOPES ; EASTERN SICHUAN ; CENTRAL TARIM
Indexed BySCI
Language英语
Funding OrganizationChina Natural Science Foundation of China(41125009 ; China Natural Science Foundation of China(41125009 ; 13th Five-Year National Key Petroleum Project(2016ZX05008003-040) ; 13th Five-Year National Key Petroleum Project(2016ZX05008003-040) ; International Postdoctoral Exchange Fellowship Program - Office of China Postdoctoral Council (OCPC)(20150035 ; International Postdoctoral Exchange Fellowship Program - Office of China Postdoctoral Council (OCPC)(20150035 ; 41402132 ; 41402132 ; 38) ; 38) ; 40839906) ; 40839906) ; China Natural Science Foundation of China(41125009 ; China Natural Science Foundation of China(41125009 ; 13th Five-Year National Key Petroleum Project(2016ZX05008003-040) ; 13th Five-Year National Key Petroleum Project(2016ZX05008003-040) ; International Postdoctoral Exchange Fellowship Program - Office of China Postdoctoral Council (OCPC)(20150035 ; International Postdoctoral Exchange Fellowship Program - Office of China Postdoctoral Council (OCPC)(20150035 ; 41402132 ; 41402132 ; 38) ; 38) ; 40839906) ; 40839906)
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000362454900006
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/7695
Collection油气资源研究室
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China
2.Univ Liverpool, Dept Earth Ocean & Ecol Sci, Liverpool L69 3GP, Merseyside, England
3.China Univ Geosci, Energy Resource Dept, Beijing 100083, Peoples R China
4.Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
5.Hangzhou Res Inst Geol, Hangzhou 310023, Zhejiang, Peoples R China
6.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Jiang, Lei,Cai, Chunfang,Worden, Richard H.,et al. Rare earth element and yttrium (REY) geochemistry in carbonate reservoirs during deep burial diagenesis: Implications for REY mobility during thermochemical sulfate reduction[J]. CHEMICAL GEOLOGY,2015,415:87-101.
APA Jiang, Lei.,Cai, Chunfang.,Worden, Richard H..,Li, Kaikai.,Xiang, Lei.,...&Li, Wenjun.(2015).Rare earth element and yttrium (REY) geochemistry in carbonate reservoirs during deep burial diagenesis: Implications for REY mobility during thermochemical sulfate reduction.CHEMICAL GEOLOGY,415,87-101.
MLA Jiang, Lei,et al."Rare earth element and yttrium (REY) geochemistry in carbonate reservoirs during deep burial diagenesis: Implications for REY mobility during thermochemical sulfate reduction".CHEMICAL GEOLOGY 415(2015):87-101.
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