木村光佑・早坂康隆 (2015). 大江山オフィオライトのジルコン U-Pb 年齢と起原. 日本地質学会講演要旨
Tsutsumi et al. (2010) Ages of Zircons in Jadeitite and Jadeite-bearing Rocks of Japanese Islands. Bull. Natl. Mus. Nat. Sci., Ser. C, 36, 19–30.
The oldest ophiolite in Japan occurs as a small block at Nomo in western Kyushu, and was dated ca. 583 Ma (Igi et al., 1979).
S. *Igi, H. Hattori, K. Shibata
Nomo metagabbro complex and their 450 m.y. ages as a clue to the basement geology―a proposal of "Saihi Structural Zone" including the pre-Silurian basements in the westernmost part of the Japanese Islands―
H. Kano (Ed.), The Basement of the Japanese Islands, Toko Printing, Sendai (1979), pp. 261–280