Temporal Evolution of Boron Flux in the NE Japan and Izu Arcs Measured by Ion Microprobe from the Forearc Tephra Record

Autor:	Graham D. Layne, Achim J Kopf, Peter D. Clift, Yani Najman, John B Hunt, Nobumichi Shimizu
Rok vydání:	2003
Předmět:	geography Incompatible element geography.geographical_feature_category Subduction Pacific Plate Geochemistry Magma chamber Volcanic rock Geophysics Geochemistry and Petrology Oceanic crust Tephra Forearc Geology
Zdroj:	Journal of Petrology. 44:1211-1236
ISSN:	1460-2415
Popis:	The enrichment of boron relative to similarly incompatible elements, such as Be, in arc volcanic rocks has been used as a proxy for the involvement of slab flux in petrogenesis. New ion microprobe analyses of single glass shards in tephra layers recovered by the Ocean Drilling Program (ODP) in the Izu and NE Japan forearc basins now allow the temporal variation in slab flux to be charted since 7 and 5 Ma, respectively. B/Be ratios are typically
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::19130a0d2f458eb17cc0b923ab96c6e9 https://doi.org/10.1093/petrology/44.7.1211 Zobrazit plný text záznamu