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- W2118604845 abstract "Research Article| September 01, 2008 Constraining ultrahigh-pressure (UHP) metamorphism and titanium ore formation from an infrared microthermometric study of fluid inclusions in rutile from Donghai UHP eclogites, eastern China Pei Ni; Pei Ni † 1State Key Laboratory for Mineral Deposits Research, Institute of Geo-fluids, Department of Earth Sciences, Nanjing University, Nanjing 210093, China †E-mail: peini@nju.edu.cn Search for other works by this author on: GSW Google Scholar Xia Zhu; Xia Zhu 1State Key Laboratory for Mineral Deposits Research, Institute of Geo-fluids, Department of Earth Sciences, Nanjing University, Nanjing 210093, China Search for other works by this author on: GSW Google Scholar Rucheng Wang; Rucheng Wang 1State Key Laboratory for Mineral Deposits Research, Institute of Geo-fluids, Department of Earth Sciences, Nanjing University, Nanjing 210093, China Search for other works by this author on: GSW Google Scholar Kun Shen; Kun Shen 2Institute of Geological Sciences of Shandong, Jinan 250013, China Search for other works by this author on: GSW Google Scholar Zeming Zhang; Zeming Zhang 3Institute of Geology, Chinese Academy of Geological Sciences, Beijing 10037, China Search for other works by this author on: GSW Google Scholar Jiansheng Qiu; Jiansheng Qiu 4State Key Laboratory for Mineral Deposit Research, Department of Earth Sciences, Nanjing University, Nanjing 210093, China Search for other works by this author on: GSW Google Scholar Jianping Huang Jianping Huang 5Geological Survey of Jiangsu, Nanjing 210093, China Search for other works by this author on: GSW Google Scholar Author and Article Information Pei Ni † 1State Key Laboratory for Mineral Deposits Research, Institute of Geo-fluids, Department of Earth Sciences, Nanjing University, Nanjing 210093, China Xia Zhu 1State Key Laboratory for Mineral Deposits Research, Institute of Geo-fluids, Department of Earth Sciences, Nanjing University, Nanjing 210093, China Rucheng Wang 1State Key Laboratory for Mineral Deposits Research, Institute of Geo-fluids, Department of Earth Sciences, Nanjing University, Nanjing 210093, China Kun Shen 2Institute of Geological Sciences of Shandong, Jinan 250013, China Zeming Zhang 3Institute of Geology, Chinese Academy of Geological Sciences, Beijing 10037, China Jiansheng Qiu 4State Key Laboratory for Mineral Deposit Research, Department of Earth Sciences, Nanjing University, Nanjing 210093, China Jianping Huang 5Geological Survey of Jiangsu, Nanjing 210093, China †E-mail: peini@nju.edu.cn Publisher: Geological Society of America Received: 13 Aug 2006 Revision Received: 30 Dec 2007 Received: 14 Jan 2008 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 © 2008 Geological Society of America GSA Bulletin (2008) 120 (9-10): 1296–1304. https://doi.org/10.1130/B26090.1 Article history Received: 13 Aug 2006 Revision Received: 30 Dec 2007 Received: 14 Jan 2008 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Pei Ni, Xia Zhu, Rucheng Wang, Kun Shen, Zeming Zhang, Jiansheng Qiu, Jianping Huang; Constraining ultrahigh-pressure (UHP) metamorphism and titanium ore formation from an infrared microthermometric study of fluid inclusions in rutile from Donghai UHP eclogites, eastern China. GSA Bulletin 2008;; 120 (9-10): 1296–1304. doi: https://doi.org/10.1130/B26090.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract Eclogites in the Donghai area of the Sulu ultrahigh-pressure (UHP) metamorphic belt in eastern China contain both disseminated rutile and rutile deposits. The rutile occurs as small inclusions in garnet, omphacite, phengite, and quartz, as larger euhedral to subhedral grains in equilibrium with garnet, omphacite, phengite, and kyanite, and as discrete veinlets, aggregates, and megacrysts in cracks and along grain boundaries. To investigate the processes of rutile mineralization and its relationship to the evolution of the Sulu UHP metamorphic belt, we sampled the exposed Maobei deposit at Donghai and drill core between 100 and 2000 m in the nearby Chinese Continental Scientific Drilling Project (CCSD) main hole to carry out a detailed infrared microthermometric fluid inclusion study. Three types of fluid inclusions were identified: aqueous (Type I), CO2-H2O (Type II), and CH4 (Type III). Type I and Type II inclusions are the most common. Primary and pseudosecondary Type I inclusions, which were trapped during recrystallization of the eclogite or early amphibolite facies retrograde metamorphism, have a narrow range of homogenization temperatures but a wide range of salinities. In contrast, secondary Type I inclusions, which formed entirely during retrograde amphibolite-facies metamorphism associated with exhumation of the UHP rocks, have higher and more varied homogenization temperatures but medium to low salinities. Type II inclusions formed contemporaneously with the Type I variety and are characterized by having small amounts of CO2 and N2 in addition to H2O. In addition, some of the rutile grains contain sparse inclusions composed of CH4 (Type III). Our results combined with those of previous studies, suggest a great diversity of fluid composition in the peak metamorphic to early retrograde stages, implying very limited fluid-rock interaction during syn- to post-peak high-pressure (HP) and UHP metamorphism. This study shows that infrared microthermometric investigation of fluid inclusions can provide information not only on the composition of titanium ore-forming fluids but also on the relationship between mineralization and the evolution of UHP metamorphic belt. You do not have access to this content, please speak to your institutional administrator if you feel you should have access." @default.
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- W2118604845 title "Constraining ultrahigh-pressure (UHP) metamorphism and titanium ore formation from an infrared microthermometric study of fluid inclusions in rutile from Donghai UHP eclogites, eastern China" @default.
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