2024-03-29T11:39:10Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/367752022-11-17T02:08:08Zhdl_2115_35168hdl_2115_34816hdl_2115_116Paleomagnetic Studies of the Tertiary Rocks in Southwestern Hokkaido, Northeast JapanFujiwara, Yoshiki450Paleomagnetic studies have been carried out on Tertiary rocks ranging in age between 32.3 and 5.8 Ma from southwestern Hokkaido, Northeast Japan. The results establish that southwestern Hokkaido was rotated anti-clockwise through more than 50° since Late Oligocene. This anti-clockwise rotation appears to be linked to the opening of Japan Sea.北海道大学Departmental Bulletin Paperapplication/pdfhttp://hdl.handle.net/2115/36775https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/36775/1/23-2_p159-166.pdf0018-3474北海道大学理学部紀要2321591661992-08engpublisher