globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2014.10.028
Scopus记录号: 2-s2.0-84936161953
论文题名:
The major and trace element glass compositions of the productive Mediterranean volcanic sources: Tools for correlating distal tephra layers in and around Europe
作者: Tomlinson E.L.; Smith V.C.; Albert P.G.; Aydar E.; Civetta L.; Cioni R.; Çubukçu E.; Gertisser R.; Isaia R.; Menzies M.A.; Orsi G.; Rosi M.; Zanchetta G.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2015
卷: 118
起始页码: 48
结束页码: 66
语种: 英语
英文关键词: Discrimination diagrams ; Major and trace element ; Neapolitan ; Somma-Vesuvius ; Tephra ; Tephrochronology
Scopus关键词: Glass ; Separation ; Stratigraphy ; Tectonics ; Volcanoes ; Discrimination diagram ; Major and trace elements ; Neapolitan ; Somma-Vesuvius ; Tephra ; Tephrochronology ; Trace elements ; biostratigraphy ; chemical composition ; correlation ; discriminant analysis ; glass ; magma chemistry ; tectonic setting ; tephra ; tephrochronology ; trace element ; volcanic eruption ; Campania [Italy] ; Ischia ; Italy ; Napoli [Campania]
英文摘要: The increasing application of cryptotephra studies is leading the identification of new tephra marker layers the sources of which in many cases may not be known or may be ambiguous. In this contribution, we discuss the controls on tephra geochemistry in the context of establishing the provenance of an unknown tephra layer. We use the RESET database (https://c14.arch.ox.ac.uk), which contains major and trace element data for a number of European silicic tephra erupted in the period 100ka to ca 10ka, to define new and modify existing tectonic setting discrimination diagrams for use with volcanic glass analyses. Bivariate plots of the elements Rb, Nb, Ta, Y and Th and K2O, SiO2, FeO and MgO can be used to identify tephra from different tectonic settings. New, detailed glass chemistry shows that tephra from the productive Neapolitan volcanic centres, Somma-Vesuvius (22-4ka activity), Campi Flegrei (60-15ka) and Ischia (75-20ka), can be separated using major elements, CaO-SiO2, Na2O/K2O-CaO and CaO-MgO. In each of these centres, the tephrostratigraphic record is characterized by the repeated occurrence of similar glass compositions, punctuated by significant changes in magma chemistry. The glass compositions of successive eruptions from Campi Flegrei are similar but there is a significant change in the composition following the Campanian Ignimbrite, and there are comparable compositional changes at Ischia following the Monte Epomeo Green Tuff eruption and at Somma-Vesuvius following the Verdoline event. Distinguishing different tephras from a single volcanic centre is more problematic, and in some instances even impossible, without good chronological and stratigraphic control and/or high-resolution trace element glass data. At Somma-Vesuvius certain major elements can be used to separate glasses from the major chronological phases (Group 1 - Pomici di Base and Verdoline; Group 2 - Mercato and Avellino), but separating tephras within a single group on the basis of glass composition can be problematic. © 2014 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60058
Appears in Collections:过去全球变化的重建

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作者单位: Department of Geology, Trinity College Dublin, Dublin, Ireland; Research Laboratory for Archaeology and the History of Art, University of Oxford, Oxford, United Kingdom; Department of Geological Engineering, Hacettepe University, Ankara, Turkey; Instituto Nazionale di Geofisica e Vulcanologia, Sezione di Napoli-Osservatorio Vesuviano, Napoli, Italy; Department of Earth Sciences, Università degli Studi di Firenze, Firenze, Italy; School of Physical and Geographical Sciences, Keele University, Keele, United Kingdom; Istituto Nazionale di Geofisica e Vulcanologia, Osservatorio Vesuviano, Napoli, Italy; Department of Earth Sciences, Royal Holloway University of London, Egham, United Kingdom; Dipartimento di Scienze della Terra, dell'Ambiente e delle Risorse, Università degli Studi di Napoli Federico II, Naples, Italy; Dipartimento di Fisica E. R. Caianiello, Università degli Studi di Salerno, Fisciano SA, Italy; Dipartimento di Scienze della Terra, Università di Pisa, Pisa, Italy

Recommended Citation:
Tomlinson E.L.,Smith V.C.,Albert P.G.,et al. The major and trace element glass compositions of the productive Mediterranean volcanic sources: Tools for correlating distal tephra layers in and around Europe[J]. Quaternary Science Reviews,2015-01-01,118
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