[ Top ] [ Japanese ]
Tsukubasan Gabbroic Body
Invalid synonym: Tsukubasan Gabbroic Complex
- Type locality: Mount Tsukuba, Tsukuba city, Ibaraki prefecture
- Plutonic rocks
- Late Cretaceous (75 Ma, K-Ar)
- Intruded by: Granite
- Lithofacies: Olivine gabbro, Hornblende gabbro, Anorthosite, Cortlndite
- Lithofacies (Minor): Spessartite
------ Transitional, ~~~~~~ Intrusive, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Mount Tsukuba, Tsukuba city, Ibaraki pref.; Dorokujin pass, Kasama city - Ishioka city, Ibaraki pref.; Omasu, Ishioka city, Ibaraki pref.
- Takahashi et al. (2011) Jour. Geol. Soc. Japan, vol.117, Supplement, pp.21-31 DOI
- Miyazaki et al. (1996) Geology of the Makabe District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 103p. (in Japanese with English abstract 4p.)