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	Provedor de dados ArchiMer (2) Autor Austin, William E. N. (2) Hibbert, Fiona D. (2) Abbott, Peter M. (1) Bates, Richard (1) Benn, Douglas I. (1) Bourles, Didier L. (1) Davies, Siwan M. (1) Pearce, Nicholas J. G. (1) Rinterknecht, Vincent (1) Scourse, James D. (1) Small, David (1) Mais... Palavra-chave Chlorine-36 (1) Cosmogenic exposure ages (1) Cryptotephra (1) Deglaciation (1) Iceland (1) Isochrons (1) Palaeoclimatic correlation (1) Scotland (1) Volcanic ash (1) Mais... Tipo do documento Text (2) Ano 2016 (1) 2013 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Implications of 36Cl exposure ages from Skye, northwest Scotland for the timing of ice stream deglaciation and deglacial ice dynamics ArchiMer Small, David; Rinterknecht, Vincent; Austin, William E. N.; Bates, Richard; Benn, Douglas I.; Scourse, James D.; Bourles, Didier L.; Hibbert, Fiona D.. Geochronological constraints on the deglaciation of former marine based ice streams provide information on the rates and modes by which marine based ice sheets have responded to external forcing factors such as climate change. This paper presents new 36Cl cosmic ray exposure dating from boulders located on two moraines (Glen Brittle and Loch Scavaig) in southern Skye, northwest Scotland. Ages from the Glen Brittle moraines constrain deglaciation of a major marine terminating ice stream, the Barra-Donegal Ice Stream that drained the former British-Irish Ice Sheet, depending on choice of production method and scaling model this occurred 19.9 ± 1.5–17.6 ± 1.3 ka ago. We compare this timing of deglaciation to existing geochronological data and changes in a... Tipo: Text Palavras-chave: Deglaciation; Scotland; Cosmogenic exposure ages; Chlorine-36. Ano: 2016 URL: https://archimer.ifremer.fr/doc/00349/46010/83047.pdf Cryptotephrochronology of the Eemian and the last interglacial-glacial transition in the North East Atlantic ArchiMer Abbott, Peter M.; Austin, William E. N.; Davies, Siwan M.; Pearce, Nicholas J. G.; Hibbert, Fiona D.. The Eemian interglacial and the onset of the subsequent glacial period serve as the most recent analogue for the natural operation of the climate system during the current interglacial. Pronounced climatic oscillations occurred during this period, but their nature and pattern are poorly understood due to dating limitations and unknown phase relationships between different regions and archives. Tephrochronology offers considerable potential for precise correlation of disparate palaeoclimatic archives preserving evidence of these rapid climatic transitions through the tracing of common isochronous tephra horizons. We outline the identification of three previously unknown cryptotephra horizons within a marine core from the Rockall Trough, North East Atlantic.... Tipo: Text Palavras-chave: Cryptotephra; Iceland; Isochrons; Palaeoclimatic correlation; Volcanic ash. Ano: 2013 URL: https://archimer.ifremer.fr/doc/00264/37517/35822.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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