DOI: 10.1016/j.quascirev.2013.01.028
Scopus记录号: 2-s2.0-84875270466
论文题名: Isotopic (Sr-Nd) and major element fingerprinting of distal tephras: An application to the Middle-Late Pleistocene markers from the Colli Albani volcano, central Italy
作者: Giaccio B. ; Arienzo I. ; Sottili G. ; Castorina F. ; Gaeta M. ; Nomade S. ; Galli P. ; Messina P.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 67 起始页码: 190
结束页码: 206
语种: 英语
英文关键词: 40Ar/39Ar dating
; Isotopic 87Sr/86Sr and 143Nd/144Nd fingerprinting
; Major elements glass compositions
; Roman Comagmatic Province
; Ultra-potassic tephra markers
Scopus关键词: <sup>40</sup>Ar/<sup>39</sup>Ar dating
; Glass compositions
; Isotopic <sup>87</sup>Sr/<sup>86</sup>Sr and <sup>143</sup>Nd/<sup>144</sup>Nd fingerprinting
; Roman Comagmatic Province
; Ultra-potassic tephra markers
; Electron probe microanalysis
; Glass
; Isotopes
; Lithology
; Neodymium
; Volcanoes
; Strontium
; alluvial deposit
; argon-argon dating
; chemical composition
; clinopyroxene
; explosive volcanism
; glass
; isotopic composition
; lithology
; neodymium isotope
; Pleistocene
; stratigraphy
; strontium isotope
; tephra
; volcanic eruption
; Alban Hills
; Apennines
; Italy
; Lazio
英文摘要: We describe the diagnostic lithological and chemical features of distal tephras from major Middle-Late Pleistocene (560-36 ka) explosive eruptions of the Colli Albani volcanic district, central Italy. In particular, we explore the time-dependent variability of the Sr and Nd isotope compositions as a tool for recognising and pinpointing individual Colli Albani tephra in distal settings. The distal tephras investigated are in lacustrine and fluvial sediments of central Apennine intermountain basins located 70 km-100 km east of Colli Albani. The recognition of the Colli Albani tephras is essentially based on the K-foiditic composition of their glass, which, within the Italian volcanological framework, is a distinctive character of the Colli Albani pyroclasts. In detail, these tephras are attributed to the following eruptive units: Tufo Pisolitico di Trigoria (561 ± 2 ka); Tufo del Palatino-Tufo di Bagni Albule (530 ± 2/527 ± 2 ka), Tufo di Bagni Albule-Pozzolane Rosse air-fall sequence (517 ± 1 to 500 ± 3 ka), Pozzolane Rosse (457 ± 4 ka), Villa Senni (365 ± 4 ka), and Albano 5-7 (41 ± 7 to 36 ± 1 ka). These correlations are supported by 40Ar/39Ar dating of the distal tephras correlated to the Pozzolane Rosse (457.4 ± 1.7 ka), Villa Senni (365 ± 2 ka) and Albano 5-7 (41 ± 9 ka) and by 87Sr/86Sr measured on clinopyroxene crystals and fresh glassy scoria from distal Colli Albani tephras that range from ∼0.711 to ∼0.709. These ratios are similar to those that characterise the individual proximal correlative units, and show the same decreasing trend over time. In contrast, the 143Nd/144Nd ratios for proximal and distal bulk samples and clinopyroxene increase from ∼0.51212 to ∼0.51215 from the oldest to the youngest tephra deposit. In summary, the study of Sr and Nd isotope compositions that is here applied on products from the Colli Albani volcanic district is a powerful, complementary tool to the more traditional tephrostratigraphic methods (e.g., componentry and electron microprobe analysis) for fingerprinting of distal tephras over a large region of the central Mediterranean, and over a large time interval, such as from 560 ka to 36 ka. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60670
Appears in Collections: 过去全球变化的重建
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作者单位: Istituto di Geologia Ambientale e Geoingegneria, CNR, Via Salaria km 29.300, 00015 Monterotondo Rome, Italy; Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione di Napoli, Osservatorio Vesuviano, Via Diocleziano 328, 80124 Naples, Italy; Dipartimento di Scienze della Terra, Università di Roma La Sapienza, Rome, Italy; Laboratoire des Sciences du Climat et de l'Environnement, IPSL, Laboratoire CEA/CNRS/UVSQ, Bât. 12 Avenue de la terrasse, 91198 Gif-Sur-Yvette, France; Dipartimento della Protezione Civile, Via Vitorchiano 4, 00189 Rome, Italy
Recommended Citation:
Giaccio B.,Arienzo I.,Sottili G.,et al. Isotopic (Sr-Nd) and major element fingerprinting of distal tephras: An application to the Middle-Late Pleistocene markers from the Colli Albani volcano, central Italy[J]. Quaternary Science Reviews,2013-01-01,67