Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados ArchiMer (3) Autor Bourne, Anna J. (3) Davies, Siwan M. (3) Abbott, Peter M. (2) Griggs, Adam J. (2) Blockley, Simon P. E. (1) Brauer, Achim (1) Chapman, Mark R. (1) Hardiman, Mark (1) Harding, Poppy R. (1) Lane, Christine S. (1) Macleod, Alison (1) Matthews, Ian P. (1) Pyne-o'Donnell, Sean D. F. (1) Rasmussen, Sune O. (1) Wulf, Sabine (1) Zanchetta, Giovanni (1) Mais... Palavra-chave Tephrochronology (3) Marine cores (2) North Atlantic (2) Palaeoceanography (2) Quaternary (2) Event-stratigraphy (1) Glass shard concentrations (1) Greenland ice cores (1) INTIMATE (1) Palaeoclimate (1) Palaeoenvironment (1) Tephra framework (1) Transport and deposition (1) Mais... Tipo do documento Text (3) Ano 2018 (2) 2014 (1) País France (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Tephrochronology and the extended intimate (integration of ice-core, marine and terrestrial records) event stratigraphy 8-128 ka b2k ArchiMer Blockley, Simon P. E.; Bourne, Anna J.; Brauer, Achim; Davies, Siwan M.; Hardiman, Mark; Harding, Poppy R.; Lane, Christine S.; Macleod, Alison; Matthews, Ian P.; Pyne-o'Donnell, Sean D. F.; Rasmussen, Sune O.; Wulf, Sabine; Zanchetta, Giovanni. The comparison of palaeoclimate records on their own independent timescales is central to the work of the INTIMATE (INTegrating Ice core, MArine and TErrestrial records) network. For the North Atlantic region, an event stratigraphy has been established from the high-precision Greenland ice-core records and the integrated GICCO5 chronology. This stratotype provides a palaeoclimate signal to which the timing and nature of palaeoenvironmental change recorded in marine and terrestrial archives can be compared. To facilitate this wider comparison, without assuming synchroneity of climatic change/proxy response, INTIMATE has also focussed on the development of tools to achieve this. In particular the use of time-parallel marker horizons e.g. tephra layers... Tipo: Text Palavras-chave: Event-stratigraphy; Tephrochronology; INTIMATE; Greenland ice cores; Palaeoenvironment; Palaeoclimate. Ano: 2014 URL: https://archimer.ifremer.fr/doc/00289/40028/39254.pdf Tracing marine cryptotephras in the North Atlantic during the last glacial period: Protocols for identification, characterisation and evaluating depositional controls ArchiMer Abbott, Peter M.; Griggs, Adam J.; Bourne, Anna J.; Davies, Siwan M.. Tephrochronology is increasingly being utilised as a key tool for improving chronological models and correlating disparate palaeoclimatic sequences. For many sedimentary environments, however, there is an increased recognition that a range of processes may impart a delay in deposition and/or rework tephra. These processes can affect the integrity of tephra deposits as time-synchronous markers, therefore, it is crucial to assess their isochronous nature, especially when cryptotephras are investigated in a dynamic marine environment. A methodology for the identification and characterisation of marine cryptotephras alongside a protocol for assessing their integrity is outlined. This methodology was applied to a wide network of North Atlantic marine sequences... Tipo: Text Palavras-chave: Quaternary; Palaeoceanography; Tephrochronology; North Atlantic; Transport and deposition; Marine cores; Glass shard concentrations. Ano: 2018 URL: https://archimer.ifremer.fr/doc/00495/60700/83609.pdf Tracing marine cryptotephras in the North Atlantic during the last glacial period: Improving the North Atlantic marine tephrostratigraphic framework ArchiMer Abbott, Peter M.; Griggs, Adam J.; Bourne, Anna J.; Chapman, Mark R.; Davies, Siwan M.. Tephrochronology is increasingly being recognised as a key tool for the correlation of disparate palae-oclimatic archives, underpinning chronological models and facilitating climatically independent comparisons of climate proxies. Tephra frameworks integrating both distal and proximal tephra occurrences are essential to these investigations providing key details on their spatial distributions, geochemical signatures, eruptive sources as well as any available chronological and/or stratigraphic information. Frameworks also help to avoid mis-correlation of horizons and provide important information on volcanic history. Here we present a comprehensive chronostratigraphic framework of 14 tephra horizons from North Atlantic marine sequences spanning 60-25 cal ka... Tipo: Text Palavras-chave: Quaternary; Palaeoceanography; Tephrochronology; North Atlantic; Tephra framework; Marine cores. Ano: 2018 URL: https://archimer.ifremer.fr/doc/00495/60702/83611.pdf Registros recuperados: 3 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco