Elemental, Hf–Nd isotopic and geochronological constraints on an island arc sequence associated with the Cretaceous Caribbean plateau: Bonaire, Dutch Antilles

Autor:	J. Tarney, Pamela D. Kempton, P. M. E. Thompson, Andrew D. Saunders, Malcolm S. Pringle, R. White, Andrew C. Kerr
Rok vydání:	2004
Předmět:	geography Plateau geography.geographical_feature_category Trace element Geochemistry Geology Oceanic plateau Pelagic sediment Cretaceous Arc (geometry) Paleontology Sequence (geology) Geochemistry and Petrology Island arc
Zdroj:	Lithos. 74:91-116
ISSN:	0024-4937
DOI:	10.1016/j.lithos.2004.01.004
Popis:	On the Caribbean margins, Upper Cretaceous oceanic plateaux fragments are juxtaposed with island arc fragments of a similar age; until this study, the relationship between them was unknown. This work represents the first detailed study of one such island arc sequence, the Bonaire Washikemba Formation (BWF). These rocks display typical arc-like trace element and Hf–Nd isotopic characteristics (negative Nb and Ta anomalies, qHf of +12 to +14, qNd of +6.5 to +8). They show no indication for the involvement of oceanic plateau material in their source. This is confirmed by binary mixing hyperbolae, which indicate that the Hf–Nd isotopic composition can be modelled by mixing of
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7a2b9d00b48adb0a226c1132076a188b https://doi.org/10.1016/j.lithos.2004.01.004 Zobrazit plný text záznamu Full Text from ScienceDirect