globalchange  > 气候减缓与适应
DOI: 10.1016/j.quascirev.2018.07.028
Scopus记录号: 2-s2.0-85050128031
论文题名:
Late Glacial-Holocene tephra from southern Patagonia and Tierra del Fuego (Argentina, Chile): A complete textural and geochemical fingerprinting for distal correlations in the Southern Hemisphere
作者: Del Carlo P.; Di Roberto A.; D'Orazio M.; Petrelli M.; Angioletti A.; Zanchetta G.; Maggi V.; Daga R.; Nazzari M.; Rocchi S.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 195
起始页码: 153
结束页码: 170
语种: 英语
英文关键词: Antarctica ; Explosive volcanism ; Holocene ; Hudson volcano ; Mt Burney volcano ; Patagonia and Tierra del Fuego ; Reclus volcano ; South America ; Tephra
Scopus关键词: Charcoal ; Explosives ; Geochemistry ; Glacial geology ; Glass ; Submarine geology ; Trace elements ; Antarctica ; Explosive volcanism ; Holocenes ; Hudson Volcano ; Patagonia ; South America ; Tephra ; Volcanoes ; explosive volcanism ; geochemistry ; Holocene ; ice core ; Last Glacial ; marine sediment ; Neogene ; outcrop ; Quaternary ; Southern Hemisphere ; tephra ; volcanic glass ; Andes ; Antarctica ; Antarctica ; Argentina ; Chile ; Chile ; Cordillera ; Magallanes ; Mount Burns ; New Zealand ; Paraguay ; Patagonia ; Reclus Volcano ; South Island ; South Sandwich Islands ; South Shetland Islands ; Southern Alps ; Southland ; Tierra del Fuego [(PRV) Argentina]
英文摘要: Explosive volcanoes from the southern Andes are able to disperse ash over wide areas of the Southern Hemisphere, potentially as far as Antarctica. With the aim of improving correlations between sources and tephra in southernmost South America and, possibly, Antarctica, this work presents new field, textural and geochemical data on tephra layers from southern Patagonia and Tierra del Fuego (Argentina and Chile). Major- and trace-element data, obtained on single glass shards allowed to identify tephra sources in Late Glacial-Holocene eruptions from Hudson, Reclus and Mt Burney volcanoes, located in the Southern and Austral Volcanic Zone of the Andean Cordillera. Twelve new radiocarbon age determinations of charcoals, peats and soils have further constrained the correlations between the studied tephra layers and known eruptions from Hudson, Mt Burney and Reclus volcanoes. Therefore, this study contributes to expand the geochemical dataset on volcanic glasses valuable for tephra correlations in South America, and improves the current tephrostratigraphic framework of this region. Furthermore, we revised literature data by compiling a database including Neogene-Quaternary volcanic tephra found in Antarctic ice cores, marine sediments, blue ice and continental outcrops as well as tephra produced by volcanic sources located in Antarctica and circum-Antarctic areas. This revision shows that Antarctic tephra can be correlated with confidence to Antarctic and circum-Antarctic (South Shetlands and South Sandwich Islands) volcanic sources, whereas correlations with South American sources are arguable, and a complete geochemical fingerprinting is needed for validation. © 2018 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112100
Appears in Collections:气候减缓与适应

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作者单位: Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Pisa, Via della Faggiola 32, Pisa, 56126, Italy; Dipartimento di Scienze della Terra, Università di Pisa, Via Santa Maria, 53, Pisa, 56126, Italy; Dipartimento di Fisica e Geologia, Università di Perugia, Via A. Pascoli, Perugia, I-06123, Italy; Dipartimento Scienze dell'Ambiente e Territorio, Università degli Studi di Milano, Bicocca Piazza della Scienza, 1, Milano, 2016, Italy; Laboratorio de Análisis por Activación Neutrónica, Centro Atómico Bariloche, Centro Científico Tecnológico, CONICET - Patagonia Norte, 8400 Bariloche, Av. de los Pioneros 2350, Bariloche, 8400, Argentina; Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Roma1, Via di Vigna Murata 605, Roma, 00143, Italy; Dipartimento di Scienze della Terra, Sapienza Università di Roma, Piazzale Aldo Moro 5, Roma, Italy

Recommended Citation:
Del Carlo P.,Di Roberto A.,D'Orazio M.,et al. Late Glacial-Holocene tephra from southern Patagonia and Tierra del Fuego (Argentina, Chile): A complete textural and geochemical fingerprinting for distal correlations in the Southern Hemisphere[J]. Quaternary Science Reviews,2018-01-01,195
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