Base surge deposits, eruption history, and depositional processes of a wet phreatomagmatic volcano in Central Anatolia (Cora Maar)

Basit Öğe Kaydı
dc.authorid0000-0003-0596-7977
dc.contributor.authorGencalioglu-Kuscu, Gonca
dc.contributor.authorAtilla, Cuneyt
dc.contributor.authorCas, Ray A. F.
dc.contributor.authorKuscu, Ilkay
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2007
dc.departmentNiğde ÖHÜ
dc.description2nd International Maar Conference -- SEP 21-25, 2004 -- Lajosmizse, HUNGARY
dc.description.abstractCora Maar is a Quaternary volcano located to the 20 km northwest of Mount Erciyes, the largest of the 19 polygenetic volcanic complexes of the Cappadocian Volcanic Province in central Anatolia. Cora Maar is a typical example of a maar-diatreme volcano with a nearly circular crater with a mean diameter of c. 1.2 km, and a well-bedded base surge-dominated maar rim tephra sequence up to 40 m in thickness. Having a diameter/depth ratio (D/d) of 12, Cora is a relatively "mature" maar compared to recent maar craters in the world. Cora crater is excavated within the andesitic lava flows of Quaternary age. The tephra sequence is not indurated, and consists of juvenile clasts up to 70 cm, non-juvenile clasts up to 130 cm, accretionary lapilli up to 1.2 cm in diameter, and ash to lapilli-sized tephra. Base surge layers display well-developed antidune structures indicating the direction of the transport. Both progressive and regressive dune structures are present within the tephra sequence. Wavelength values increase with increasing wave height, and with large wavelength and height values. Cora tephra display similarities to Taal and Laacher See base surge deposits. Impact sags and small channel structures are also common. Lateral and vertical facies changes are observed for the dune bedded and planar bedsets. According to granulometric analyses, Cora Maar tephra samples display a bimodal distribution with a wide range of Md-phi values, characteristic for the surge deposits. Very poorly sorted, bimodal ash deposits generally vary from coarse tail to fine tail grading depending on the grain size distribution while very poorly sorted lapilli and block-rich deposits display a positive skewness due to fine tail grading. (c) 2006 Elsevier B.V. All rights reserved.
dc.description.sponsorshipInt Assoc Volcanol & Chem Earth Interior, IAVCEI, Commiss Volcanogen Sediments, Int Assoc Sedimentol, Int Comm Hungarh, Slovak Republic Germany
dc.identifier.doi10.1016/j.jvolgeores.2006.06.013
dc.identifier.endpage209
dc.identifier.issn0377-0273
dc.identifier.issue45352
dc.identifier.scopus2-s2.0-33845642615
dc.identifier.scopusqualityQ1
dc.identifier.startpage198
dc.identifier.urihttps://dx.doi.org/10.1016/j.jvolgeores.2006.06.013
dc.identifier.urihttps://hdl.handle.net/11480/5443
dc.identifier.volume159
dc.identifier.wosWOS:000243607900012
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.subjectmaar
dc.subjectCappadocian Volcanic Province
dc.subjectTurkey
dc.subjectbase surge
dc.subjectgranulometric analyses
dc.subjectphreatomagmatic
dc.subjectjuvenile clasts
dc.titleBase surge deposits, eruption history, and depositional processes of a wet phreatomagmatic volcano in Central Anatolia (Cora Maar)
dc.typeArticle

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