@article{oai:nipr.repo.nii.ac.jp:00001789,
 author = {Motoyoshi, Yoichi and Shiraishi, Kazuyuki},
 journal = {Memoirs of National Institute of Polar Research. Special issue},
 month = {Sep},
 note = {P(論文), Botnnuten is an isolated nunatak situated between Lutzow-Holm Bay and the Yamato Mountains, East Antarctica. It is composed of well-layered pelitic and basic gneisses with subordinate amounts of calc-silicate rock. The petrographical examinations revealed that the assemblages of sillimanite+Kfeldspar+biotite in the pelitic gneiss, and garnet+clinopyroxene+orthopyroxene+plagioclase+quartz in the basic gneiss are observed to have coexisted stably. Sillimanite+spinel assemblage included in porphyroblastic garnet is totally interpreted to be a breakdown product after staurolite during the prograde recrystallization. The present phase relations and geothermo-barometries yielded the metamorphic conditions of Botnnuten rocks to be 750-800℃ at 5-6 kbars. On the basis of the petrographical features with respect to the occurrence of aluminous silicate minerals and the recrystallization history inferred from the textural relationships, and the P-T conditions mentioned above, it is concluded that Botnnuten is a low-pressure portion of the Lutzow-Holm Complex.},
 pages = {127--146},
 title = {Petrography and geothermometry-geobarometry of Botnnuten, East Antarctica},
 volume = {37},
 year = {1985}
}