Correlation of ignimbrites in the central Anatolian volcanic province using zircon and plagioclase ages and zircon compositions

Basit Öğe Kaydı
dc.authorid0000-0002-9172-9926
dc.authorid0000-0002-9029-4211
dc.authorid0000-0001-5148-2538
dc.contributor.authorAydar, Erkan
dc.contributor.authorSchmitt, Axel K.
dc.contributor.authorCubukcu, H. Evren
dc.contributor.authorAkin, Lutfiye
dc.contributor.authorErsoy, Orkun
dc.contributor.authorSen, Erdal
dc.contributor.authorAtici, Gokhan
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2012
dc.departmentNiğde ÖHÜ
dc.description.abstractEpisodes of high eruptive fluxes (>10(-3) km(3)/year) in continental environments are associated with magmatism related to subduction, post-orogenic collapse, intra-plate hot spots, or rifting. During such episodes, voluminous ignimbrite deposits are produced which cover landscapes over 10(4)-10(5) km(2). In such sequences, brief eruptive recurrence and chemical similarity limit the applicability of geochronological and geochemical correlation methods. Here, we present complementary geochronological data (Ar-40/Ar-39 plagioclase eruption and Pb-206/U-238 zircon crystallization ages) for ignimbrites from the Miocene-Holocene Central Anatolian Volcanic Province (CAVP). In addition, we successfully employed zircon geochemistry (trace elements, oxygen isotopes) as an alteration-resistant indicator to correlate rhyodacitic to rhyolitic ignimbrites whose eruption age differences are too brief to be resolved by Ar-40/Ar-39 geochronology. By applying this method, we dismiss previous correlations between stratigraphic members (i.e., Sofular and Gordeles, Sofular and Sanmadentepe), but demonstrate close relationships for other CAVP ignimbrites (i.e., Kayak units 1 to 4; Cemilkoy ignimbrite and overlying fallout deposits). Our chronostratigraphy reveals two previously unrecognized eruptive pulses at -9-8 Ma and 7-5 Ma which are characterized by increasing magmatic temperatures (-75-100 degrees C within each cycle). Despite a long-term (10 Ma) eruptive productivity that is about one order of magnitude smaller than in other magmatically active continental plateaus, the CAVP achieved high eruptive fluxes during brief (1-2 Ma) intervals. (C) 2011 Elsevier B.V. All rights reserved.
dc.description.sponsorshipTubitak [108Y063, 107Y333]; Hacettepe University [0701602009]; National Science Foundation
dc.description.sponsorshipJournal reviewers Cathy Busby and Luca Ferrari provided constructive and helpful reviews. Janet C. Harvey is thanked for comments on an earlier manuscript. Different parts of this work were financially supported by Tubitak projects (108Y063 and Vertical Anatolian Movement Project-107Y333) and Hacettepe University BAB Project (0701602009). The ion microprobe facility at UCLA is partly supported by a grant from the Instrumentation and Facilities Program, Division of Earth Sciences, National Science Foundation.
dc.identifier.doi10.1016/j.jvolgeores.2011.11.005
dc.identifier.endpage97
dc.identifier.issn0377-0273
dc.identifier.scopus2-s2.0-84455170995
dc.identifier.scopusqualityQ1
dc.identifier.startpage83
dc.identifier.urihttps://dx.doi.org/10.1016/j.jvolgeores.2011.11.005
dc.identifier.urihttps://hdl.handle.net/11480/4602
dc.identifier.volume213
dc.identifier.wosWOS:000301562700007
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherELSEVIER SCIENCE BV
dc.relation.ispartofJOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectTephrostratigraphy
dc.subjectPyroclastic deposits
dc.subjectGeochronology
dc.subjectMiocene
dc.subjectContinental plateau
dc.titleCorrelation of ignimbrites in the central Anatolian volcanic province using zircon and plagioclase ages and zircon compositions
dc.typeArticle

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