Vol. 41, No. 1, 1990

Diatom biostratigraphy of the Neogene Sendai Group, Northeast Honshu, Japan. (Japanese with English abstract)
　Yukio Yanagisawa
　1-25

JLk-1, JLs-1 and JDo-1, GSJ rock reference samples of the "Sedimentary rock series"
　Atsushi Ando, T. Okai, Y. Inouchi, T. Igarashi, S. Sudo, K. Marumo, S. Itoh and S. Terashima
　27-48

Vol. 41, No. 2, 1990

Origin of sand and its distribution pattern in the Seto Inland Sea, Southwest Japan
　Yoshio Inouchi
　49-86

The geology of the Shintomi well and granitic basement in the Miyazaki Neogene and Quaternary basin in Kyushu. (Japanese with English abstract)
　Yasumoto Suzuki, T. Sato, N. Kaneko, K. Kageyama and K. Yazaki
　87-92

Inversion temperatures of quartz from the Osuzuyama acid rocks, Miyazaki Prefecture, Southwest Japan. (Japanese with English abstract)
　Toshimitsu Iwaya
　93-97

Vol. 41, No. 3, 1990

Alpha track measurements for faults in northern Turkey
　Hirokazu Kato, Kan Katoh, Aykut Barka and Ismail Kuscu
　99-114

Age of Fossil Argonautidae (Cephalopoda) from Hokuriku Province (Central Honshu, Japan) based on diatom biostratigraphy. (Japanese with English abstract)
　Yukio Yanagisawa
　115-127

Homogeneity tests for twenty-four GSJ rock reference samples. (Japanese with English abstract)
　Shigeru Terashima, Takashi Okai, Atsushi Ando and Shiro Itoh
　129-138

Abstracts for Geological Survey Seminar, No. 197 (in Japanese)
　139-145

Vol. 41, No. 4, 1990

Geochemistry of fourteen elements in bottom sediments from Lake Suwa, Central Japan. (Japanese with English abstract)
　Shigeru Terashima, Yoshio Inouchi, Seizo Nakao and Hiroshi Yonetani
　147-172

Relation between self-exciting process in time series of AE and spatial distribution of AE hypocenter. (Japanese with English abstract)
　Osamu Nishizawa and Harufumi Noro
　173-184

Abstracts for Geological survey Seminar, No. 198, Assesments on geothermal resources in Japan (in Japanese)
　185-195

Vol. 41, No. 5, 1990

Taxonomy and phylogeny of the three marine diatom genera, Crucidenticula, Denticulopsis and Neodenticula
　Yukio Yanagisawa and Fumio Akiba
　197-301

Vol. 41, No. 6, 1990

Stratigraphy of the Tokai Group and paleogeography of the Tokai sedimentary basin in the Tokai region, Central Japan. (Japanese with English abstract)
　Fumio Yoshida
　303-340

Granitic rocks from the geothermal drillholes of ZO-1 and ZO-2 in the Zao area, northern Honshu−Fracture zones indicated by discontinuity of abundance of elements in rocks. (Japanese with English abstract)
　Hiroshi Kanaya and Masakatsu Sasada
　341-355

Vol. 41, No. 7, 1990

Formation of gentle slope deposits at Mt. Tsukuba, Mt. Kaba and its surroundings, Ibaraki Prefecture. (Japanese with English abstract)
　Ichiyo Isobe
　357-371

Note on the Late Cenozoic marine phosphatic rocks in Japan
　Kazuhiko Kano
　373-382

Biological markers in bitumen extracts and crude oil from the Mitsuke oil field. (Japanese with English abstract)
　Nobuyuki Kaneko, Susumu Sakata and Tsutomu Machihara
　383-394

K-Ar ages of the Nyuto-Takakura volcanic products, southern part of the Sengan geothermal area, Northeast Japan. (Japanese with English abstract)
　Shigeru Suto, Kozo Uto and Shigeru Uchiumi
　395-404

Abstracts for Geological Survey Seminar, No. 199, Geochemical data and their social use (in Japanese)
　405-417

Vol. 41, No. 8, 1990

Fingerprint geochemical survey applied to the Median Tectonic Line areas. (Japanese with English abstract)
　Ken Shibata, Masami Higashihara and Hidetoshi Muranaka
　419-453

Irregularities of the "Chuseki-so" and damage of house by the Kanto Earthquake of 1923 in the southeastern part of Saitama Prefecture−Buried topography beneath "Chuseki-so" and the distribution of the damaged houses in Dewa-mura−(J+E)
　Teruo Aihara
　455-468

Abstracts for Geological Survey Seminar, No. 200 (in Japanese)

Vol. 41, No. 9, 1990

Middle Miocene back-arc rift magmatism of basalt in the NE Japan arc
　Nobuyuki Tsuchiya
　473-505

Physical properties of soils and vertical groundwater movement in upper parts of the Tsukuba Upland−A case study at Higashi, Tsukuba City−. (Japanese with English abstract)
Masaya Yasuhara, Atsunao Marui, Tadashi Tanaka and Takemasa Ishii
　507-516

Abstracts for Geological Survey Seminar, No. 201, Submarine hydrothermal activity (in Japanese)
　517-526

Vol. 41, No. 10, 1990

The K-Ar ages and their stratigraphic interpretation of the Cheju Island volcanics, Korea. (Japanese with English abstract)
　Shiro Tamanyu
527-537

On the chlorine content in the pore water from the central Niigata sedimentary basin
Takeshi Koma and Yasumoto Suzuki
　539-549

Chemical composition and geochemical map of sedimentary rocks on the Naka terrace, northeastern area of Ibaraki Prefecture. (Japanese with English abstract)
Yutaka Kanai, Toru Sakamoto and Atsushi Ando
　551-566

K-Ar Age Results−3 −New data from the Geological Survey of Japan. (Japanese with English abstract)
　Shigeru Uchiumi, Shigeru Uto and Ken Shibata
　567-575

Vol. 41, No. 11, 1990

Special issue for overseas geology and mineral resources (IV)−Research on mineral deposits associated withcarbonatite in Brazil−

Niobium mineralization of Catalao I carbonatite complex, Goias, Brazil
　Hideo Hirano, Masaharu Kamitani, Takeo Sato and Sadahisa Sudo
　577-594

Araxa carbonatite deposit and its lateritization
　Masaharu Kamitani and Hideo Hirano
　595-604

Jacupiranga carbonatites in Sao Paulo State, Brazil −Their mode of occurrence−
　Hideo Hirano, Masaharu Kamitani and Elias C. Daitx
　605-610

Carbon and oxygen isotopic composition of the carbonates from the Jacupiranga and Catalao I carbonatite complexes, Brazil
　Toshiro Morikiyo, Hideo Hirano and Yukihiro Matsuhisa
　619-626

Determination of Nb and Ta in weathering soils from Brazilian carbonatite complexes
　Tadashi Fujinuki
　627-629

Important carbonatite-alkaline/alkaline complexes and related mineral resources in the world
　Masaharu Kamitani and Hideo Hirano
　631-640

Vol. 41, No. 12, 1990

Geochemistry of amino acids and monosaccharides in bottom sediments from Lake Kasumigaura, Central Japan. (Japanese with English abstract)
　Minako Terashima and Yoshio Inouchi
　641-655

Osaka Group and underlying granite in the southwestern part of the Osaka Plain −Data of a drill hole at Namimatsu-cho, Kishiwada-shi−. (Japanese with English abstract)
　Chikao Kurimoto, Naotoshi Yamada and Mitsuo Sato
　657-663

Some carboniferous corals and basalts from the Hasumi Formation, along the middle course of the Gonokawa (river), Central Chugoku District, Southwest Japan. (Japanese with English abstract)
　Tetsuo Sugiyama, Hirohisa Matsuura and Kiyoshi Ishibashi
　665-677

Abstract for Geological Survey Seminar, No. 202 (in Japanese except for as follows)
　679-685

Chemistry and metal contents of discharges from Kirishima volcano: Effects and significanse meteoric interraction
　J. W. Hedenquist
　682-683