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Epidote records subduction-zone metamorphic fluid actions
Tang Pan1,2; Guo Shun1,3
2019
Source PublicationACTA PETROLOGICA SINICA
ISSN1000-0569
Volume35Issue:7Pages:2045-2060
AbstractSubduction zone is the key link between the earth's surface biosphere and lithosphere, which therefore significantly influences the evolution of the earth interior and habitable environment of human. Suitable scale of mobile fluid phase is commonly present in this setting. Those slab-derived high pressure (HP) or ultra-high pressure (UHP) metamorphic aqueous fluids control the key geological processes in subduction zones, such as the metasomatism and partial melting of mantle wedge, the formation of island arc lavas, the intermediate and deep earthquakes, and the element transfer and chemical differentiation. Knowledge of fluid source, flow manner, composition, and physico-chemical condition is the premise and key to understand the nature and behavior of subduction-zone fluids. Epidote is an important hydrous rock-forming mineral in subduction-zone metamorphic rocks. This mineral has a wide P-T stability range from greenschist facies to eclogite facies, high concentrations of trace elements (e.g., Sr, Pb, Th, U, Cr, V and LREE), and the negligible in body diffusion, which allow it to reflect the (multiple-stage) fluid activities and geochemical feedbacks in subduction zones. This paper reviewed the main research progress of epidote and its important applications in revealing the subduction-zone fluid activities for the past few years, including the origin, chemical composition, flow manner, oxygen fugacity, metasomatic effect, and multiple-stage crystallization of the fluids. These results indicate that epidote is an excellent recorder of metamorphic fluid actions, which could prove vital information to help understand the metamorphic fluid behavior and element transfer in subduction zones.
KeywordEpidote Subduction zones Metamorphic fluid Trace elements Isotopes
DOI10.18654/1000-0569/2019.07.07
WOS KeywordULTRAHIGH-PRESSURE ECLOGITE ; TRACE-ELEMENT GEOCHEMISTRY ; ZIRCON U-PB ; DABIE-SHAN ; CONTINENTAL-CRUST ; ROCK INTERACTION ; LAWSONITE ECLOGITE ; PHASE-EQUILIBRIA ; EASTERN CHINA ; QUARTZ-VEIN
Language英语
WOS Research AreaGeology
WOS SubjectGeology
WOS IDWOS:000491151100007
PublisherSCIENCE PRESS
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Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/93904
Collection岩石圈演化国家重点实验室
Corresponding AuthorGuo Shun
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
First Author AffilicationState Key Laboratory of Lithospheric Evolution
Corresponding Author AffilicationState Key Laboratory of Lithospheric Evolution
Recommended Citation
GB/T 7714
Tang Pan,Guo Shun. Epidote records subduction-zone metamorphic fluid actions[J]. ACTA PETROLOGICA SINICA,2019,35(7):2045-2060.
APA Tang Pan,&Guo Shun.(2019).Epidote records subduction-zone metamorphic fluid actions.ACTA PETROLOGICA SINICA,35(7),2045-2060.
MLA Tang Pan,et al."Epidote records subduction-zone metamorphic fluid actions".ACTA PETROLOGICA SINICA 35.7(2019):2045-2060.
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