1988
DOI: 10.1029/tc007i003p00653
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Paleomagnetism of Tertiary rocks from the OGA Peninsula and the rotation of northeast Japan

Abstract: Attslract. We have made a paleomagnetic study of Tertiary rocks from the Oga Peninsula, northers Honshu Island. Vokanic and sedimentary rocks were sampled from 26 sites in the peninsula. The ages of the rocks range from 62 Ma to the present. The resuRs indicate a couaterclockwise rotation of Northeast Japan with respect to eastern Asia around a pole at 58øN, 149øE, between about 22 Ma and 15 Ms. The amount of the rotation is about 20 ø. Before the rotation, Northeast Japan was situated along the east coast of … Show more

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Cited by 87 publications
(42 citation statements)
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“…Other data confirm the clockwise rotation of Southwest Japan, such as studies of the deformation associated with the bending of Kyushu (Murata, 1987;Fabbri et al, 1988). Paleomagnetic data in Northeast Japan also suggest counterclockwise rotations during the Japan Sea opening (Otofuji et al, 1985;Tosha and Hamano, 1988). We showed (Jolivet et al, 1991) that such a rotation is necessary to properly close the basin.…”
Section: Strike-slip Shear Along the Eastern Marginmentioning
confidence: 84%
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“…Other data confirm the clockwise rotation of Southwest Japan, such as studies of the deformation associated with the bending of Kyushu (Murata, 1987;Fabbri et al, 1988). Paleomagnetic data in Northeast Japan also suggest counterclockwise rotations during the Japan Sea opening (Otofuji et al, 1985;Tosha and Hamano, 1988). We showed (Jolivet et al, 1991) that such a rotation is necessary to properly close the basin.…”
Section: Strike-slip Shear Along the Eastern Marginmentioning
confidence: 84%
“…As discussed in several papers (Otofuji and Matsuda, 1983,1984,1987Otofuji et al, 1985Otofuji et al, , 1991Tosha and Hamano, 1988;Hayashida, 1986;Hayashida et al, 1991), it is classically admitted that Northeast Japan underwent a counterclockwise rotation and Southwest Japan a clockwise rotation during the Japan Sea opening (Fig. 6).…”
Section: Tectonic Timing and Paleomagnetic Rotationsmentioning
confidence: 99%
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“…The declinations from the strata of 12 Ma or younger at Oga Peninsula, Northeast Japan (TOSHA and HAMANO, 1988) and the strata of 15 Ma or younger at Shakotan Peninsula, western Hokkaido (TANAKA et al, 1989) have the same tendency. There is a possibility that Northeast Japan was slightly rotated clockwise after its counterclockwise rotation with the opening of the Japan Sea.…”
Section: 1 Magnetostratigraphymentioning
confidence: 51%