DOI: 10.1016/j.quascirev.2014.02.007
Scopus记录号: 2-s2.0-84896797194
论文题名: Late Quaternary tephrostratigraphy of southern Chile and Argentina
作者: Fontijn K. ; Lachowycz S.M. ; Rawson H. ; Pyle D.M. ; Mather T.A. ; Naranjo J.A. ; Moreno-Roa H.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 89 起始页码: 70
结束页码: 84
语种: 英语
英文关键词: Andes
; Austral Volcanic Zone
; Lake sediment core
; Patagonia
; Peat core
; Southern Volcanic Zone
; Tephra
; Tephra correlation
; Tephra preservation
; Tephrochronology
; Tephrostratigraphy
Scopus关键词: Andes
; Austral volcanic zones
; Lake sediment cores
; Patagonia
; Peat cores
; Tephra
; Tephra correlations
; Tephrochronology
; Tephrostratigraphy
; Volcanic zone
; Analytical geochemistry
; Glacial geology
; Peat
; Sediments
; Tools
; Volcanoes
; database
; dating method
; paleoenvironment
; Postglacial
; Quaternary
; sediment analysis
; stratigraphy
; tephrochronology
; Andes
; Argentina
; Chile
英文摘要: The Southern and Austral Volcanic Zones of the Andes comprise 74 volcanic centres with known post-glacial activity. At least 21 of these have had one or more large explosive eruptions in the late Quaternary, dispersing tephra over vast areas. These tephra layers therefore have great potential as tephrochronological marker horizons in palaeoenvironmental studies in southern Chile and Argentina, a region that is particularly useful to study climate dynamics of the southern hemisphere. However, to date tephrochronology has rarely been fully utilised in this region as a correlation and dating tool. Here we review the existing post-glacial tephrostratigraphic record of the Southern and Austral Volcanic Zones, and compile a database of known occurrences of tephra from these volcanoes in ice and lacustrine, marine, peat, and cave sediment records. We address the inconsistencies in and revisions of the tephrostratigraphies presented in prior literature, and discuss the challenges in correlating tephras and the limitations of the tephrostratigraphic record in this area. This study highlights the many gaps that still exist in our knowledge of the eruptive histories of these volcanoes, but also reveals the largely under-utilised potential of tephra as a correlation tool in this region. This is exemplified by the severe lack of adequate geochemical analysis of tephra layers preserved in many lacustrine and peat sediment sections, which are particularly important tephrostratigraphic records in southern Chile and Argentina due to the paucity of surface preservation. © 2014 The Authors.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60347
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Earth Sciences, University of Oxford, South Parks Road, Oxford, Oxfordshire OX1 3AN, United Kingdom; Servicio Nacional de Geología y Minería, Avenida Santa María 0104, Santiago, Chile; Observatorio Volcanológico de Los Andes del Sur, Servicio Nacional de Geología y Minería, Dinamarca 691, Temuco, Chile
Recommended Citation:
Fontijn K.,Lachowycz S.M.,Rawson H.,et al. Late Quaternary tephrostratigraphy of southern Chile and Argentina[J]. Quaternary Science Reviews,2014-01-01,89