研究紀要「自然誌の研究」第4号（2001年8月発行）

EXCURSION GUIDEBOOK (Field Trips F; Sept. 22-25, 2001) of International Conference on Paleoceanography VII
Environments of the Cretaceous Yezo Forearc Basin -Carbon cycle and bio-diversity change-
Hiromichi HIRANO, Takashi SAKAI, Hiroshi HAYAKAWA, Ken'ichi SAIKI, Takashi HASEGAWA, Manabu KANO, Yoshinori HIKIDA, Ken'ichi TAKAHASHI and Fumihisa KAWABE


北海道北部・中川地域の下部白亜系の地球化学的研究
　清水孝太郎・竹田一平・三次徳二・平野弘道

Vol. 4 August 31, 2001
EXCURSION GUIDEBOOK (Field Trips F; Sept. 22-25, 2001) of International Conference on Paleoceanography VII
Environments of the Cretaceous Yezo Forearc Basin -Carbon cycle and bio-diversity change-
Hiromichi HIRANO, Takashi SAKAI, Hiroshi HAYAKAWA, Ken'ichi SAIKI, Takashi HASEGAWA, Manabu KANO, Yoshinori HIKIDA, Ken'ichi TAKAHASHI and Fumihisa KAWABE

Geochemical study of the Lower Cretaceous in the Nakagawa Area, northern Hokkaido, Japan. (Japanese with English abstract)
Kotaro SHIMIZU, Ippei TAKEDA, Tokuji MITSUGI and Hiromichi HIRANO