T18[Topic] History of the Earth

[T18-P-20] Paleozoic seawater Os isotope record reconstructed from umbers in accretionary complexes of eastern Australia

*Tomu SAKAI¹, Koichiro FUJINAGA^2,1, Moei YANO^2,1, Kazutaka YASUKAWA¹, Yoichi USUI³, Keishiro AZAMI^4,2, Yamato SONODA¹, Jonathan C. Aitchison⁵, Kentaro NAKAMURA^1,2, Yasuhiro KATO^1,2 (1. Univ. Tokyo, 2. CIT, 3. Kanazawa Univ., 4. Tohoku Univ., 5. Univ. Queensland)

Keywords:

umber,strata-bound ferromanganese deposit,hydrothermal ferromanganese sediment,Os isotopic composition,Paleozoic

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