The Canary record of the evolution of the North Atlantic Pliocene: New Ar-40/Ar-39 ages and some notable palaeontological evidence

Título:	The Canary record of the evolution of the North Atlantic Pliocene: New Ar-40/Ar-39 ages and some notable palaeontological evidence
Autores/as:	Meco, J. Koppers, Anthony A. P. Miggins, Daniel P. Lomoschitz, Alejandro Betancort-Lozano, Juan Francisco
Clasificación UNESCO:	24 Ciencias de la vida 2416 Paleontología
Palabras clave:	Canary current origin Early Pliocene biogeography Pliocene climatic evolution Pliocene Canarian fossils Fossil Argonauta argo
Fecha de publicación:	2015
Publicación seriada:	Palaeogeography, Palaeoclimatology, Palaeoecology
Resumen:	Two new 40Ar/39Ar ages () and previously published K/Ar ages of basaltic pillow lava flows are coeval with closely-related fossiliferous marine layers, allowing us to establish the beginning (5.8; 5.0; 4.8Ma at Ajuí, Fuerteventura Island and 4.8±0.03Ma (2?) at Tamaraceite) and a middle stage (4.20±0.18Ma (2?)* at La Esfinge in Gran Canaria Island) of Early Pliocene marine deposits in the Canary Islands. Here the presence of tropicopolitan fossils (Megaselachus megalodon, Janthina typica) suggests the influence of a possible Central American Circumtropical Current during the Pliocene and in the North Atlantic basin.
URI:	http://hdl.handle.net/10553/17950
ISSN:	0031-0182
DOI:	10.1016/j.palaeo.2015.05.027
Fuente:	Palaeogeography, Palaeoclimatology, Palaeoecology [ISSN 0031-0182], v. 435, p. 53-69
Colección:	Artículos

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