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An Experimental Study of the Formation of Talc through CaMg(CO3)(2)-SiO2-H2O Interaction at 100-200 degrees C and Vapor-Saturation Pressures
Wan, Ye1; Wang, Xiaolin1,2,3; Chou, I-Ming4; Hu, Wenxuan1,2; Zhang, Yang1; Wang, Xiaoyu1; Wang, Xiaolin(Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210023, Jiangsu, Peoples R China); Hu, Wenxuan(Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210023, Jiangsu, Peoples R China)
2017
Source PublicationGEOFLUIDS
Contribution Rank第1完成单位 ; 第2完成单位 ; 第3完成单位 ; 第4完成单位
AbstractThe metamorphic interaction between carbonate and silica-rich fluid is common in geological environments. The formation of talc from dolomite and silica-rich fluid occurs at low temperatures in the metamorphism of the CaO-MgO-SiO2-CO2-H2O system and plays important roles in the formation of economically viable talc deposits, the modification of dolomite reservoirs, and other geological processes. However, disagreement remains over the conditions of talc formation at low temperatures. In this study, in situ Raman spectroscopy, quenched scanning electron microscopy, micro-X-ray diffraction, and thermodynamic calculations were used to explore the interplay between dolomite and silica-rich fluids at relatively low temperatures in fused silica tubes. Results showed that talc formed at <= 200 degrees C and low CO2 partial pressures (PCO2). The reaction rate increased with increasing temperature and decreased with increasing PCO2. The major contributions of this study are as follows: (1) we confirmed the formation mechanism of Mg-carbonate-hosted talc deposits and proved that talc can form at <= 200 degrees C; (2) the presence of talc in carbonate reservoirs can indicate the activity of silica-rich hydrothermal fluids; and (3) the reactivity and solubility of silica require further consideration, when a fused silica tube is used as the reactor in high P-T experiments.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1155/2017/3942826
URL查看原文
Indexed BySCI
Language英语
WOS KeywordSAN-ANDREAS FAULT ; RAMAN-SPECTROSCOPIC CHARACTERIZATION ; THERMOCHEMICAL SULFATE REDUCTION ; AMORPHOUS SILICA SOLUBILITIES ; FLUID INCLUSIONS ; DEGREES-C ; HYDROTHERMAL ALTERATION ; ISOTOPE GEOCHEMISTRY ; AQUEOUS-SOLUTIONS ; CARBONATE RESERVOIRS
WOS SubjectGeochemistry & Geophysics ; Geology
WOS IDWOS:000405781300001
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.idsse.ac.cn/handle/183446/3959
Collection深海科学研究部_深海极端环境模拟研究实验室
Corresponding AuthorWang, Xiaolin; Hu, Wenxuan; Wang, Xiaolin(Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210023, Jiangsu, Peoples R China); Hu, Wenxuan(Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210023, Jiangsu, Peoples R China)
Affiliation1.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210023, Jiangsu, Peoples R China
2.Nanjing Univ, Inst Energy Sci, Nanjing 210023, Jiangsu, Peoples R China
3.Shandong Univ Sci & Technol, Shandong Prov Key Lab Deposit Mineralizat & Sedim, Qingdao 266510, Shandong, Peoples R China
4.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Lab Expt Study Deep Sea Extreme Condit, Sanya 572000, Hainan, Peoples R China
Recommended Citation
GB/T 7714
Wan, Ye,Wang, Xiaolin,Chou, I-Ming,et al. An Experimental Study of the Formation of Talc through CaMg(CO3)(2)-SiO2-H2O Interaction at 100-200 degrees C and Vapor-Saturation Pressures[J]. GEOFLUIDS,2017.
APA Wan, Ye.,Wang, Xiaolin.,Chou, I-Ming.,Hu, Wenxuan.,Zhang, Yang.,...&Hu, Wenxuan.(2017).An Experimental Study of the Formation of Talc through CaMg(CO3)(2)-SiO2-H2O Interaction at 100-200 degrees C and Vapor-Saturation Pressures.GEOFLUIDS.
MLA Wan, Ye,et al."An Experimental Study of the Formation of Talc through CaMg(CO3)(2)-SiO2-H2O Interaction at 100-200 degrees C and Vapor-Saturation Pressures".GEOFLUIDS (2017).
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