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Sadakatsu TANEDA
Article type: Article
1977 Volume 22 Issue 2 Pages
61-64
Published: August 15, 1977
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Kenzo YAGI, A K.Gupta
Article type: Article
1977 Volume 22 Issue 2 Pages
65-74
Published: August 15, 1977
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Since Daly proposed the limestone-assimilation hypothesis for the generation of feldspathoidal alkalic rocks from subalkalic magmas, many views have been made by various investigators to ascribe the formation of leucite rccks to the assimilation of granitic rocks by basaltic or carbonatitic magmas. Few experimental works, however, have been made to solve this problem by direct experiments. In order to clarify this old and interesting problem by experiemental approach, quenching experiments at atmospheric pressure and hydrothermal experiments at pressures 1-6kb have been done on the following assemblages of natural and synthetic rock samples.
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Sachio EHARA, Kozo YUHARA, Joyo OSSAKA
Article type: Article
1977 Volume 22 Issue 2 Pages
75-84
Published: August 15, 1977
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Various geothermal measurements were conducted during and after the eruptive activity of a new volcano Nishinoshima-shinto, the Ogasawara Islands. Ground temperature at 1Ocm depth was 580℃ at four months and 178℃ at seventeen months after the eruptive activity. Maximum surface temperature was 90゜~100℃ at thirteen months and 54゜~66℃ at seventeen months after the eruptive activity. Heat discharge decreased from 2.7x10
7 cal/sec at the eruptive stage (Sekioka and Yuhara, 1976) to 3.3×10
6 cal/sec at seventeen months after the eruptive activity. Thus, all the thermal data show rapid cooling of the Nishinoshima-shinto. The reason of the rapid cooling may be explained by two manners. 0ne is that the heat source (solid magmatic body) in the ground after the eruptive activity is very small. Another is that the sea water affects essentially on the cooling of the heat source. Such rapid cooling may be one of the typical features of submarine volcanic activities.
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Masao MIMATSU
Article type: Letter
1977 Volume 22 Issue 2 Pages
85-86
Published: August 15, 1977
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T Hirota, T Sakuma
Article type: Abstract
1977 Volume 22 Issue 2 Pages
87-
Published: August 15, 1977
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Y Mizutani
Article type: Abstract
1977 Volume 22 Issue 2 Pages
87-88
Published: August 15, 1977
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Y Oba, K Wada
Article type: Abstract
1977 Volume 22 Issue 2 Pages
88-
Published: August 15, 1977
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Y Katsui, S Nemoto
Article type: Abstract
1977 Volume 22 Issue 2 Pages
88-
Published: August 15, 1977
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Y Nakamura
Article type: Abstract
1977 Volume 22 Issue 2 Pages
88-89
Published: August 15, 1977
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H Harada
Article type: Abstract
1977 Volume 22 Issue 2 Pages
89-
Published: August 15, 1977
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S Togashi
Article type: Abstract
1977 Volume 22 Issue 2 Pages
89-90
Published: August 15, 1977
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K Chihara, H Fuse, S Tsuchiya
Article type: Abstract
1977 Volume 22 Issue 2 Pages
90-
Published: August 15, 1977
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H Tajima, D Shimozuma, I Yokoyama
Article type: Abstract
1977 Volume 22 Issue 2 Pages
90-
Published: August 15, 1977
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Y Oki, T Suzuki, T Hirano
Article type: Abstract
1977 Volume 22 Issue 2 Pages
90-91
Published: August 15, 1977
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S Matsuo, M Kusakabe, T Hirano, Y Oki
Article type: Abstract
1977 Volume 22 Issue 2 Pages
91-
Published: August 15, 1977
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S Narita, H Kanazawa, H Tanaka, T Rikitake
Article type: Abstract
1977 Volume 22 Issue 2 Pages
91-92
Published: August 15, 1977
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S Hiraga, H Ito
Article type: Abstract
1977 Volume 22 Issue 2 Pages
92-
Published: August 15, 1977
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H Machida, K Hakamata
Article type: Abstract
1977 Volume 22 Issue 2 Pages
92-
Published: August 15, 1977
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K Hamuro, S Aramaki
Article type: Abstract
1977 Volume 22 Issue 2 Pages
92-93
Published: August 15, 1977
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H Fujimaki, K Hamuro, H Kurasawa
Article type: Abstract
1977 Volume 22 Issue 2 Pages
93-
Published: August 15, 1977
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J Toyoda, M Kimura
Article type: Abstract
1977 Volume 22 Issue 2 Pages
93-
Published: August 15, 1977
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Volcanological Observation Team, J.M.A.
Article type: Abstract
1977 Volume 22 Issue 2 Pages
93-94
Published: August 15, 1977
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M Tsuchide
Article type: Abstract
1977 Volume 22 Issue 2 Pages
94-
Published: August 15, 1977
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T Kumagai, H Takahashi, N Oyagi
Article type: Abstract
1977 Volume 22 Issue 2 Pages
94-95
Published: August 15, 1977
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N Oyagi, T Kumagai
Article type: Abstract
1977 Volume 22 Issue 2 Pages
95-
Published: August 15, 1977
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J Ossaka, J Hirabayashi, I Minato, T Ozawa, K Kimijima, T Yoshid, T Ha ...
Article type: Abstract
1977 Volume 22 Issue 2 Pages
95-96
Published: August 15, 1977
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A Kubotera, M Matsuura, J Ito, H Inatani, T Iwasaki
Article type: Abstract
1977 Volume 22 Issue 2 Pages
96-
Published: August 15, 1977
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M Sekioka, Y Ito, T Saito, K Yuhara
Article type: Abstract
1977 Volume 22 Issue 2 Pages
96-97
Published: August 15, 1977
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T Saito, Y Ito, M Sekioka, K Yuhara
Article type: Abstract
1977 Volume 22 Issue 2 Pages
97-
Published: August 15, 1977
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M Sakuyama
Article type: Abstract
1977 Volume 22 Issue 2 Pages
97-98
Published: August 15, 1977
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K Takashima, M Yamasaki, H Sato
Article type: Abstract
1977 Volume 22 Issue 2 Pages
98-
Published: August 15, 1977
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H Hirano
Article type: Abstract
1977 Volume 22 Issue 2 Pages
98-
Published: August 15, 1977
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E Takahashi
Article type: Abstract
1977 Volume 22 Issue 2 Pages
98-99
Published: August 15, 1977
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T Tohara
Article type: Abstract
1977 Volume 22 Issue 2 Pages
99-
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S Nakada
Article type: Abstract
1977 Volume 22 Issue 2 Pages
99-100
Published: August 15, 1977
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K Yamashina
Article type: Abstract
1977 Volume 22 Issue 2 Pages
100-
Published: August 15, 1977
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T Miyazaki, M Yamaguchi, F Masutani, H Terao
Article type: Abstract
1977 Volume 22 Issue 2 Pages
100-101
Published: August 15, 1977
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T Ui
Article type: Abstract
1977 Volume 22 Issue 2 Pages
101-
Published: August 15, 1977
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K Sato, J Sato
Article type: Abstract
1977 Volume 22 Issue 2 Pages
101-
Published: August 15, 1977
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K Nishi, K Kamo, T Furusawa, J Akamatsu, Y Sudo, S Kikuchi, Y Ono, T U ...
Article type: Abstract
1977 Volume 22 Issue 2 Pages
101-
Published: August 15, 1977
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T Eto, K Ishihara, T Miyazaki, D Shimozuru
Article type: Abstract
1977 Volume 22 Issue 2 Pages
101-102
Published: August 15, 1977
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T Eto
Article type: Abstract
1977 Volume 22 Issue 2 Pages
102-
Published: August 15, 1977
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H Ohshima, S Ohkawa, I Yokoyama, K Tajima, S Izutsuya, K Ishihara
Article type: Abstract
1977 Volume 22 Issue 2 Pages
102-103
Published: August 15, 1977
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T Yukutake, T Yoshino, M Kawamura, H Oshima, Y Tanaka, H Tanaka
Article type: Abstract
1977 Volume 22 Issue 2 Pages
103-
Published: August 15, 1977
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M Kamada, K Ota
Article type: Abstract
1977 Volume 22 Issue 2 Pages
103-104
Published: August 15, 1977
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J Ossaka, J Hirabayashi, T Ozawa, K Kimijima
Article type: Abstract
1977 Volume 22 Issue 2 Pages
104-
Published: August 15, 1977
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S Aramaki
Article type: Abstract
1977 Volume 22 Issue 2 Pages
104-
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K Kamo
Article type: Abstract
1977 Volume 22 Issue 2 Pages
104-105
Published: August 15, 1977
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N Hamada
Article type: Abstract
1977 Volume 22 Issue 2 Pages
105-
Published: August 15, 1977
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M Kamada, H Sakamoto, T Onishi, J Osaka, T Ozawa
Article type: Abstract
1977 Volume 22 Issue 2 Pages
105-106
Published: August 15, 1977
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