Remarks of Rock Specimens

Kitakami Mountains
Kitakami granitic rocks are divided into six zones, i.e., Zone I, II, III, IV, V, and VI according to the papers below:

Katada, M., Onuki, H., Kato, Y., Kanisawa, S., Ono, C., and Yoshii, M. (1971): Zonal arrangement of the Cretaceous granitic rocks, Kitakami mountainland, Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists, 65, 5, 230-245 (in Japanese with English abstract).

Katada, M. (1974) I. Introductory remarks, Cretaceous Granitic Rocks in the Kitakami Mountains-Petrography and Zonal Arrangement. Rept. of Geol. Surv. Japan., 251, 1-7 (in Japanese with English abstract).

・Zone
a: Zone I, b: Zone II, c: Zone III, d: Zone IV, e: Zone V, f: Zone VI, g: Hikami granitic rocks

・Block name
a: 1-5; Kuki, Otanabe, Mizushirizaki·Matsumaezawa·Kurumihata, Taro, Oura.
b: 1-4; Hashikami, Oguni·Tenjinmori, Tanohata, Miyako
c: 1-8; Nosouke, Okubo, Ushigasawa·Heromachi·Imoya, Numabukuro, Hiraniwa, Tsukushimori·Yuzawajika, Sakainokami, Maegariyama·Yayakomori.
d: 1-3; Ichinohe, Hinomiko, Himekami.
e: 1-12; Goyosan, Tono North, Tono South, Kurihashi·Ganidake, Sanya·Doba-Mine, Kesengawa, Hitokabe, Senmaya, Akagane, Iriya, Uchino, Akimaru.
f: 1-11; Hirota, Aoganebashi, Orikabe, Shimokawauchi·Sinchi-Toge, Tabashine, Monomiishiyama·Yatamaru·Aikawazawa·Fujinuma, Sobanokami, Numazu·Hamada, Ojika, Rifu, Ashijima.
g: 1; Hikami

Taiheizan Area
The geologic legend in the map below was incorporated into the data base for this area.
Ozawa, A., Kano, H., Maruyama, T., Tsuchiya, N., Ito, M., Hirayama, J. and Shinada, S. (1981) Geological Sheet Map 1:50,000, Taiheizan, Geol. Surv. Japan.

Kurikoma Area
Zone numbers 2 and 3 correspond to the east and west of the Onikobe-Yuzawa Mylonite Zone, respectively, which zone was proposed by the paper below:
Sasada M. (1988): Onikobe-Yuzawa Mylonite Zone, Earth Science, 42 , 6 (no.219), 346-353 (in Japanese with English abstract).

Murakami Area
The geologic legend in the map below was incorporated into the data base for this area.

Tsuchiya, N., Takahashi, H., Yanagisawa, Y., Yamamoto, T., Kubo, K., Komazawa, M., Hiroshima, T.. and Naito, K. (1999) Geological Map of Japan 1:200,000, Murakami, Geol. Surv. Japan.

Research Group of the Asahi Mountains (1987) Geology of southwestern part of the Asahi Mountains, Northeast Japan - Part 1. Petrography and mutual relations of rocks -, Earth Science, 41, 253-280 (in Japanese with English abstract).

Research Group of the Asahi Mountains (1995) Geology of southwestern part of the Asahi Mountains, Northeast Japan - Part 2. Geological and deformation fabrics of plutonic and metamorphic rocks -, Earth Science, 49, 227-247 (in Japanese with English abstract).