Chemical composition of hornblendes of some Ryoke granites, central Japan.

Kanisawa, Satoshi

doi:10.2465/ganko1941.70.200

Cited by 8 publications

(1 citation statement)

References 11 publications

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“…The Late Cretaceous to Paleogene acidic volcanism occurred intensely in the inner zone of Southwest Japan and the Ashio belt, but it cannot be traced to the east beyond F-10 (TAKAHAMA, 1972;YANAI et al, 1973;OGUCHI et al, 1973). Many geo-logists KANAYA and ISHIHARA, 1973;KIKUCHI, 1974;TSUSUE and ISHI-HARA, 1974;KANISAWA, 1975;ISHIHARA and TERASHIMA, 1977) clarified that there are remarkable differences in the chemical and mineral composition of the granitic rocks, as well as in the nature of the ores accompanied by the granitic rocks, between the areas on the west and east of F-10. OTSUKI (1975) concluded that F-10 is a large-scale left-lateral fault on the basis of the pattern of faults in the shear zone.…”

Section: Tanakura Shear Zonementioning

confidence: 99%

Major Strike-Slip Faults and Their Bearing on Spreading in the Japan Sea

Otsuki

Ehiro

1978

J,Phys,Earth

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The authors emphasize the important role of the large scale strike-slip faults in the tectonic history of the circum-Japan Sea region including the origin of the Japan Sea Basins. NE-SW to NNE-SSW trending faults in the region were formed by the intense compression from the south which corresponds to the "pulse" suggested by LARSON and PITMAN (1972). NS to NNW-SSE trending faults in Northeast Japan were formed one after another from east to west by the left-lateral simple shear force induced by the subduction of the peculiar transform fault between the Kula and Tethys plates. Subduction of the seamount chain on the peculiar transform fault formed NW-SE trending faults and the cusp structure in the Kanto region. The subduction of the Kula-Pacific and Tethys ridges produced the acidic igneous activities of the Cretaceous to Paleogene in the Asiatic continental margin. Japan Sea Basins were formed in the Paleogene time by the southward drift of the western part of Japan bounded on the east by the Tanakura shear zone and on the west by the Tsushima fault, both of which had already been formed as left-lateral faults in the Cretaceous time.

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Section: Tanakura Shear Zonementioning

confidence: 99%