DOI: 10.1016/j.quascirev.2012.06.019
Scopus记录号: 2-s2.0-84878905735
论文题名: Glacial, fluvial and volcanic landscape evolution in the Laguna Potrok Aike maar area, Southern Patagonia, Argentina
作者: Coronato A. ; Ercolano B. ; Corbella H. ; Tiberi P.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 71 起始页码: 13
结束页码: 26
语种: 英语
英文关键词: Glaciofluvial landforms
; Maar
; Middle Pleistocene
; Potrok Aike
; South America
Scopus关键词: Basaltic eruptions
; Laguna potrok aike
; Landscape evolutions
; Maar
; Middle Pleistocene
; Phreatomagmatic eruption
; Potrok Aike
; South America
; Geomorphology
; Landforms
; Glacial geology
; fluvial deposit
; geomorphology
; glacial environment
; glaciation
; landscape evolution
; maar
; permafrost
; Pleistocene
; volcanic eruption
; volcanism
; Argentina
; Laguna Potrok Aike
; Santa Cruz [Argentina]
英文摘要: We describe the Pleistocene evolution of the landscape in the Laguna Potrok Aike area in southern Patagonia, Argentina, based on a geomorphological survey. Basaltic eruptions generated tablelands and scoria cones between the Late Miocene and Middle Pleistocene, and phreatomagmatic eruptions produced maars during Middle and Late Pleistocene time. The first glaciations during the Early Pleistocene generated a gently undulating to flat landscape that was affected by cryogenic processes; they are documented but not dated. Outwash surfaces indicate that the Greatest Patagonian Glaciation was multi-phased. The eruption that produced Potrok Aike maar truncated terrace levels dating to a Middle Pleistocene glaciation. The abundance of maars dating to this time may be linked to large amounts of water associated with meltwater streams and permafrost. The landscape in the Potrok Aike area has changed little since the Middle Pleistocene and only minor modifications of landforms have occurred due to cryogenesis, moderate fluvial incision, mass wasting and eolian activity. © 2012 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60615
Appears in Collections: 过去全球变化的重建
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作者单位: CADIC-CONICET, B. Houssay 200, 9410 Ushuaia, Argentina; UNPSJB-Sede Ushuaia, Darwin y Canga, 9410 Ushuaia, Argentina; UNPA-UARG, Av. Gregores y Piloto Rivera s/n, 9400 Río Gallegos, Argentina; MACN-CONICET, Av. Ángel Gallardo 470, C1405 Buenos Aires, Argentina
Recommended Citation:
Coronato A.,Ercolano B.,Corbella H.,et al. Glacial, fluvial and volcanic landscape evolution in the Laguna Potrok Aike maar area, Southern Patagonia, Argentina[J]. Quaternary Science Reviews,2013-01-01,71