@HubGeology @geoign The rock at the discovery site is not Ignimbrite, and the paper describes it as "occurs as a hydrothermal alteration product of a biotite andesite dyke."
https://t.co/cwQCqjGq2W
[原著論文]
Eizo Nakamura, et al. "On the origin and evolution of the asteroid Ryugu: A comprehensive geochemical perspective". Proceedings of The Japan Academy, Series B., 2022; 98 (6) 227-282.
https://t.co/vyhEZaZapC
[文献情報]
Keisuke MITSU, et al. "Synthesis of transparent polycrystalline jadeite under high pressure and temperature". Journal of Mineralogical and Petrological Sciences, 2021; 210319.
https://t.co/zBfJxZxbH9
前例は大西洋での発見が唯一の例だった珍しいウオノエが、地球の反対側の太平洋で再発見されたよ!
First Record of the Rare Parasitic Isopod Elthusa splendida (Cymothoidae) from the Pacific Ocean, Based on a Specimen Found in a Museum Shark Collection
https://t.co/8ARSi3Jp70