Youngest Toba Tuff in the Son Valley, India: a weak and discontinuous stratigraphic marker
作者: E. GattiA.J. DurantP.L. GibbardC. Oppenheimer
作者单位: 1Department of Geography, University of Cambridge, Downing Place, CB2 3EN, Cambridge, UK
2Centre for Atmospheric Science, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
3Norwegian Institute for Air Research, P.O. Box 100, NO-2027 Kjeller, Norway
4Geological and Mining Engineering and Sciences, Michigan Technological University, USA
5Le Studium, Institute for Advanced Studies, Orléans and Tours, France
6L’Institut des Sciences de la Terre d’Orléans, l’Université d’Orléans, 1a rue de la Férollerie, 45071 Orléans, cedex 2, France
刊名: Quaternary Science Reviews, 2011, Vol.30 (27), pp.3925-3934
来源数据库: Elsevier Journal
DOI: 10.1016/j.quascirev.2011.10.008
关键词: TobaSon ValleyTephraFluvial geomorphology
英文摘要: Abstract(#br)Investigation of the climatic and environmental impacts of the Youngest Toba Tuff (YTT, ∼74 ka BP) eruption of Toba volcano, Sumatra, is crucial for understanding the consequences of the eruption for contemporaneous human populations. The Middle Son Valley, in India, was the first locality on the Indian subcontinent where the YTT was reported. The ash bed forms a discontinuous layer stretching for over 30 km along the river. Here we report on the stratigraphic contexts of YTT ash layers in alluvial deposits of the Middle Son Valley, in order to reconstruct the taphonomy of the ash deposits and the dynamic of their deposition. Although the distal ash has been studied since the 1980s, its stratigraphic integrity and the mechanisms and pathways involved in its transport and...
全文获取路径: Elsevier  (合作)
影响因子:4.076 (2012)