IGGCAS OpenIR  > 岩石圈演化国家重点实验室
Modelling the partial melting of metasediments in a low-pressure regional contact aureole: the effect of water and whole-rock composition
Wang, Wei-R Z.1,2,3; Clarke, Geoffrey2; Daczko, Nathan R.4; Zhao, Yue1
2019-08-01
Source PublicationGEOLOGICAL MAGAZINE
ISSN0016-7568
Volume156Issue:8Pages:1400-1424
AbstractLow-pressure regional aureoles with steep metamorphic field gradients are critical to understanding progressive metamorphism in high-temperature metasedimentary rocks. Delicately layered pelitic and psammitic metasedimentary rocks at Mt Stafford, central Australia, record a greenschist- to granulite-facies Palaeoproterozoic regional aureole, associated with S-type granite plutons, reflecting metamorphism in the range 500-800 degrees C and at similar to 3 kbar. The rocks experienced minimal deformation during metamorphism and partial melting. Partial melting textures evolve progressively along the steep metamorphic field gradient from the incipient stages of melting marked by cuspate grains with low dihedral angles, to melt proportions sufficient to form diatexite with schollen. Phase equilibria modelling in the NCKFMASHTO system for pelitic, semi-pelitic and high- and low-ferromagnesian psammitic samples quantitatively illustrates the dependence of partial melting on rock composition and water volume. Pelitic compositions are more fertile than psammitic compositions when the water content in the rocks is low, especially during the early stages of melting. The whole-rock ferromagnesian component additionally influences melt fertility, with ferromagnesian-rich psammite being more fertile than psammite with a lower ferromagnesian component. Subtle variations in free water content can result in obvious changes in melt volume but limited variation in melt composition. Distinct melting histories of pelitic and psammitic rocks inferred from field relationships may be partially attributed to potential differences in water volume retained to super-solidus conditions. Melt composition is more dependent on the rock composition than the variation in water content.
Keywordmelt productivity and composition water content residuum migmatite
DOI10.1017/S001675681800078X
Funding OrganizationARC ; ARC ; University of Sydney ; University of Sydney ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds of CAGS ; Fundamental Research Funds of CAGS ; University of Sydney International Postgraduate Award ; University of Sydney International Postgraduate Award ; Macquarie University ; Macquarie University ; ARC LIEF ; ARC LIEF ; DEST Systemic Infrastructure Grants, Macquarie University and Industry ; DEST Systemic Infrastructure Grants, Macquarie University and Industry ; ARC ; ARC ; University of Sydney ; University of Sydney ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds of CAGS ; Fundamental Research Funds of CAGS ; University of Sydney International Postgraduate Award ; University of Sydney International Postgraduate Award ; Macquarie University ; Macquarie University ; ARC LIEF ; ARC LIEF ; DEST Systemic Infrastructure Grants, Macquarie University and Industry ; DEST Systemic Infrastructure Grants, Macquarie University and Industry ; ARC ; ARC ; University of Sydney ; University of Sydney ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds of CAGS ; Fundamental Research Funds of CAGS ; University of Sydney International Postgraduate Award ; University of Sydney International Postgraduate Award ; Macquarie University ; Macquarie University ; ARC LIEF ; ARC LIEF ; DEST Systemic Infrastructure Grants, Macquarie University and Industry ; DEST Systemic Infrastructure Grants, Macquarie University and Industry ; ARC ; ARC ; University of Sydney ; University of Sydney ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds of CAGS ; Fundamental Research Funds of CAGS ; University of Sydney International Postgraduate Award ; University of Sydney International Postgraduate Award ; Macquarie University ; Macquarie University ; ARC LIEF ; ARC LIEF ; DEST Systemic Infrastructure Grants, Macquarie University and Industry ; DEST Systemic Infrastructure Grants, Macquarie University and Industry
WOS KeywordWONGWIBINDA METAMORPHIC COMPLEX ; MINERAL EQUILIBRIA CALCULATIONS ; HIGH-GRADE METAMORPHISM ; NEW-ENGLAND OROGEN ; LOW-P METAMORPHISM ; MT STAFFORD ; CONTINENTAL-CRUST ; CENTRAL AUSTRALIA ; PHASE-EQUILIBRIA ; SHEAR ZONE
Language英语
Funding ProjectARC[DP160103449] ; University of Sydney ; National Natural Science Foundation of China[41672062] ; National Natural Science Foundation of China[41202047] ; National Natural Science Foundation of China[41502059] ; Fundamental Research Funds of CAGS[JYYWF201819] ; University of Sydney International Postgraduate Award ; Macquarie University ; ARC LIEF ; DEST Systemic Infrastructure Grants, Macquarie University and Industry
Funding OrganizationARC ; ARC ; University of Sydney ; University of Sydney ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds of CAGS ; Fundamental Research Funds of CAGS ; University of Sydney International Postgraduate Award ; University of Sydney International Postgraduate Award ; Macquarie University ; Macquarie University ; ARC LIEF ; ARC LIEF ; DEST Systemic Infrastructure Grants, Macquarie University and Industry ; DEST Systemic Infrastructure Grants, Macquarie University and Industry ; ARC ; ARC ; University of Sydney ; University of Sydney ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds of CAGS ; Fundamental Research Funds of CAGS ; University of Sydney International Postgraduate Award ; University of Sydney International Postgraduate Award ; Macquarie University ; Macquarie University ; ARC LIEF ; ARC LIEF ; DEST Systemic Infrastructure Grants, Macquarie University and Industry ; DEST Systemic Infrastructure Grants, Macquarie University and Industry ; ARC ; ARC ; University of Sydney ; University of Sydney ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds of CAGS ; Fundamental Research Funds of CAGS ; University of Sydney International Postgraduate Award ; University of Sydney International Postgraduate Award ; Macquarie University ; Macquarie University ; ARC LIEF ; ARC LIEF ; DEST Systemic Infrastructure Grants, Macquarie University and Industry ; DEST Systemic Infrastructure Grants, Macquarie University and Industry ; ARC ; ARC ; University of Sydney ; University of Sydney ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds of CAGS ; Fundamental Research Funds of CAGS ; University of Sydney International Postgraduate Award ; University of Sydney International Postgraduate Award ; Macquarie University ; Macquarie University ; ARC LIEF ; ARC LIEF ; DEST Systemic Infrastructure Grants, Macquarie University and Industry ; DEST Systemic Infrastructure Grants, Macquarie University and Industry
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000475939700008
PublisherCAMBRIDGE UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/92926
Collection岩石圈演化国家重点实验室
Corresponding AuthorWang, Wei-R Z.
Affiliation1.Chinese Acad Geosci, Inst Geomech, Beijing 100081, Peoples R China
2.Univ Sydney, Sch Geosci, F09, Sydney, NSW 2006, Australia
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
4.Macquarie Univ, GEMOC ARC Natl Key Ctr, Dept Earth & Planetary Sci, N Ryde, NSW 2109, Australia
First Author AffilicationState Key Laboratory of Lithospheric Evolution
Corresponding Author AffilicationState Key Laboratory of Lithospheric Evolution
Recommended Citation
GB/T 7714
Wang, Wei-R Z.,Clarke, Geoffrey,Daczko, Nathan R.,et al. Modelling the partial melting of metasediments in a low-pressure regional contact aureole: the effect of water and whole-rock composition[J]. GEOLOGICAL MAGAZINE,2019,156(8):1400-1424.
APA Wang, Wei-R Z.,Clarke, Geoffrey,Daczko, Nathan R.,&Zhao, Yue.(2019).Modelling the partial melting of metasediments in a low-pressure regional contact aureole: the effect of water and whole-rock composition.GEOLOGICAL MAGAZINE,156(8),1400-1424.
MLA Wang, Wei-R Z.,et al."Modelling the partial melting of metasediments in a low-pressure regional contact aureole: the effect of water and whole-rock composition".GEOLOGICAL MAGAZINE 156.8(2019):1400-1424.
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