Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Naturalis (2) Autor Salo, J.A. (2) Wesselingh, F.P. (2) Guerrero, J. (1) Hoorn, M.C. (1) Romero Pittmann, L. (1) Räsänen, M.E. (1) Mais... Palavra-chave 38.22 (2) 42.73 (2) Miocene (2) Mollusca (2) Amazonia (1) Biodiversity (1) Biogeography (1) Pebas Formation (1) Stratigraphy (1) Western Amazonia (1) Mais... Tipo do documento Article / Letter to the editor (2) Ano 2006 (2) País Netherlands (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última A Miocene perspective on the evolution of the Amazonian biota Naturalis Wesselingh, F.P.; Salo, J.A.. Between c. 23 and 8 Ma, western Amazonia was occupied by the vast Pebas long-lived lake/wetland system. The Pebas system had a variety of influences over the evolution of Miocene and modern Amazonian biota; it formed a barrier for the exchange of terrestrial biota, a pathway for the transition of marine biota into freshwater Amazonian environments, and formed the stage of remarkable radiations of endemic molluscs and ostracods. The lithological variation of the Pebas Formation has furthermore enhanced edaphic heterogeneity in western Amazonia, sustaining present-day high terrestrial diversity in the region. Tipo: Article / Letter to the editor Palavras-chave: Miocene; Amazonia; Biogeography; Biodiversity; Mollusca; 42.73; 38.22. Ano: 2006 URL: http://www.repository.naturalis.nl/record/209738 The stratigraphy and regional structure of Miocene deposits in western Amazonia (Peru, Colombia and Brazil), with implications for late Neogene landscape evolution Naturalis Wesselingh, F.P.; Hoorn, M.C.; Guerrero, J.; Räsänen, M.E.; Romero Pittmann, L.; Salo, J.A.. A biozonation based on molluscs is proposed for Miocene deposits of western Amazonia (Peru, Colombia and Brazil), commonly referred to as the Pebas Formation. The new zonation refines existing pollen zonations and provides a key for the quick assessment of the stratigraphic position of Neogene deposits in the field. The regional distribution of twelve mollusc zones reveals a structuring of geological units around the broad Iquitos-Araracuara anteclise. The structure of the subsurface appears to have been a major factor in the determination of present-day second and lower order river courses in the study area. Based on this work a biostratigraphic framework for Miocene deposits of western Amazonia, including fossiliferous deposits from adjacent basins... Tipo: Article / Letter to the editor Palavras-chave: Stratigraphy; Mollusca; Miocene; Western Amazonia; Pebas Formation; 42.73; 38.22. Ano: 2006 URL: http://www.repository.naturalis.nl/record/209729 Registros recuperados: 2 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