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Zoned quartz phenocrysts in supercooled melt inclusions in granulites from continental collision orogens

Hiroi, Yoshikuni; Hokada, T.; Kayama, Masahiro; Miyake, Akira; Adachi, Tatsuro; Prame, Bernard; Perera, Keerthi; Satish-Kumar, M.; Osanai, Y.; Motoyoshi, Yoichi; Ellis, David

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Felsite inclusions (FIs) in granulite garnets from continental collision orogens are supercooled felsic melt inclusions. Not only do these represent non-equilibrium textures, such as dendritic and spherulitic crystals of quartz and other minerals, but the porphyritic texture is that of hypabyssal and volcanic rocks. This paper presents representative zoned quartz phenocryst-bearing FIs in various granulites from the Highland Complex in central Sri Lanka, the Lützow-Holm Complex in East...[Show more]

dc.contributor.authorHiroi, Yoshikuni
dc.contributor.authorHokada, T.
dc.contributor.authorKayama, Masahiro
dc.contributor.authorMiyake, Akira
dc.contributor.authorAdachi, Tatsuro
dc.contributor.authorPrame, Bernard
dc.contributor.authorPerera, Keerthi
dc.contributor.authorSatish-Kumar, M.
dc.contributor.authorOsanai, Y.
dc.contributor.authorMotoyoshi, Yoichi
dc.contributor.authorEllis, David
dc.date.accessioned2022-10-17T04:51:20Z
dc.identifier.citationHiroi Y, Hokada T, Kayama M, et al. Zoned quartz phenocrysts in supercooled melt inclusions in granulites from continental collision orogens. Island Arc. 2020; 29:e12374. https://doi.org/10.1111/iar.12374
dc.identifier.issn1038-4871
dc.identifier.urihttp://hdl.handle.net/1885/275560
dc.description.abstractFelsite inclusions (FIs) in granulite garnets from continental collision orogens are supercooled felsic melt inclusions. Not only do these represent non-equilibrium textures, such as dendritic and spherulitic crystals of quartz and other minerals, but the porphyritic texture is that of hypabyssal and volcanic rocks. This paper presents representative zoned quartz phenocryst-bearing FIs in various granulites from the Highland Complex in central Sri Lanka, the Lützow-Holm Complex in East Antarctica, the Grenville Province in southeastern Canada, and the Kerala Khondalite Belt in southern India. Quartz phenocrysts show simple and definite cathodoluminescence (CL) zoning with euhedral bright cores and dark rims and overgrowths. Euhedral quartz never develops in subsolidus metamorphic rocks except for vein quartz, and is characteristic of growth in a melt phase. Groundmass quartz surrounding quartz phenocrysts within the FIs is always dark in CL, whereas matrix quartz outside garnet and single-grain inclusion quartz in garnet are usually brighter than the cores of quartz phenocrysts. The close relationship between violet CL emission intensity and Ti content of quartz indicates different growth temperatures in harmony with the inferred crystallization sequence. The preservation of CL growth zoning in quartz phenocrysts and fine non-equilibrium textures imply that the cooling rates of some granulites are 1 to 2 orders of magnitude faster than so far presumed.
dc.description.sponsorshipThis work was supported by JSPS KAKENHI Grant Numbers JP18K03789 to YH and JP17H02976 to TH.
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherBlackwell Publishing Ltd
dc.rights© 2020 John Wiley & Sons Australia, Ltd
dc.sourceThe Island Arc
dc.subjectcathodoluminescence zoning
dc.subjectfelsite-nanogranite inclusion
dc.subjectgranulite
dc.subjectrapid cooling
dc.subjectTi in quartz
dc.titleZoned quartz phenocrysts in supercooled melt inclusions in granulites from continental collision orogens
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume29
dcterms.dateAccepted2020-11-14
dc.date.issued2020-12-02
local.identifier.ariespublicationa383154xPUB16813
local.publisher.urlhttps://onlinelibrary.wiley.com/
local.type.statusPublished Version
local.contributor.affiliationHiroi, Yoshikuni, Chiba University
local.contributor.affiliationHokada, T., National Institute for Polar Research
local.contributor.affiliationKayama, Masahiro, University of Tokyo
local.contributor.affiliationMiyake, Akira, Kyoto University
local.contributor.affiliationAdachi, Tatsuro, Kyushu University
local.contributor.affiliationPrame, Bernard, Geological Survey and Mines Bureau of Sri Lanka
local.contributor.affiliationPerera, Keerthi, The University of Peradeniya
local.contributor.affiliationSatish-Kumar, M., Niigata University
local.contributor.affiliationOsanai, Y., Kyushu University
local.contributor.affiliationMotoyoshi, Yoichi, National Institute of Polar Research
local.contributor.affiliationEllis, David, College of Science, ANU
local.description.embargo2099-12-31
local.bibliographicCitation.issue1
local.bibliographicCitation.startpage1
local.bibliographicCitation.lastpage16
local.identifier.doi10.1111/iar.12374
dc.date.updated2021-11-28T07:23:34Z
local.identifier.scopusID2-s2.0-85097370397
CollectionsANU Research Publications

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