Sr/Ca-Ba/Ca systematics in four volcanoes of Oshima, Izu Islands, Japan Onuma, Naoki ; Hirano, Masataka ; Isshiki, Naoki Abstract Publication: Geochemical Journal Pub Date: 1981 DOI: 10.2343/geochemj.15.315 Bibcode: 1981GeocJ..15..315O