Magma interaction recorded in plagioclase zoning in granitoid systems, Zigana Granitoid, Eastern Pontides, Turkey

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dc.contributor.authorKarsli, O
dc.contributor.authorAydin, F
dc.contributor.authorSadiklar, MB
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2004
dc.departmentNiğde ÖHÜ
dc.description.abstractPlagioclase crystals characterized by compositional zoning are typical of the Zigana Granitoid (ZG), NE Turkey. The zoned crystals, which show textural equilibrium with the assemblage quartz + plagioclase + K-feldspar + hornblende + biotite + pyroxene,+ magnetite + ilmenite, exhibit oscillatory zoning. The zoned plagioclase crystals, ranging in size from 3 to 6 mm, are oval and larger than normal lath-shaped crystals. The zoned crystals are divided petrographically into two main types: (i) crystals zones only at their rims, with spongy cores; and (ii) completely zoned ones. Composition of the zoned crystals ranges from An(23) (oligoclase) to An(70) (labradorite). Plagioclase crystals with oscillatory zoning are governed by strong substitution mechanisms of Ca2+ double left right arrow Na+, Al3+ double left right arrow Si4+ and weak substitution of Fe3+ for Si4+. The Fe2O3(t) (wt %) contents of the subject plagioclases increase with increasing An content. The petrographic and compositional changes from rim to rim (oscillatory zoning), and positive correlation between Fe2O3(t) (wt %) and An (mol %) contents of the zoned plagioclases, suggest recurrent mafic magma injection into a felsic magma chamber, and thus magma interaction as a dominant magmatic process during the evolution of the Zigana Granitoid (ZG).
dc.identifier.endpage305
dc.identifier.issn1300-0985
dc.identifier.issue3
dc.identifier.scopus2-s2.0-9344244083
dc.identifier.scopusqualityQ2
dc.identifier.startpage287
dc.identifier.urihttps://hdl.handle.net/11480/5646
dc.identifier.volume13
dc.identifier.wosWOS:000227299500003
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherSCIENTIFIC TECHNICAL RESEARCH COUNCIL TURKEY-TUBITAK
dc.relation.ispartofTURKISH JOURNAL OF EARTH SCIENCES
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectplagioclase
dc.subjectoscillatory zoning
dc.subjectmafic-felsic magma interaction
dc.subjectZigana Granitoid
dc.subjecteastern Pontides
dc.subjectTurkey
dc.titleMagma interaction recorded in plagioclase zoning in granitoid systems, Zigana Granitoid, Eastern Pontides, Turkey
dc.typeArticle

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