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Isotopic Characteristics of Neogene-Quaternary Tephra From IODP Site U1438: A Record of Explosive Volcanic Activity in the Kyushu-Ryukyu Arc

McCarthy, Anders; Yogodzinski, Gene M.; Tepley III, Frank J.; Bizimis, Michael; Arculus, Richard; Ishizuka, Osamu

Description

International Ocean Discovery program (IODP) Site U1438 is located within the Amami‐Sankaku Basin, ~50 km SW of the Kyushu‐Palau Ridge and ~500 km SE of the present‐day volcanic front of the Kyushu‐Ryukyu arc. Thirty‐eight rhyolitic tephra layers (1–15 cm thick) deposited over the last 4 Myr were recovered at this site. Representative ash layers dominated by unaltered, colorless glass shards reaching 100–300 μm in size, in association with rare pyroxene, amphibole, biotite, and zircon, were...[Show more]

CollectionsANU Research Publications
Date published: 2019-05-16
Type: Journal article
URI: http://hdl.handle.net/1885/201990
Source: Geochemistry, Geophysics, Geosystems
DOI: 10.1029/2019GC008267
Access Rights: Open Access

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