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1991•Geophysical Research LettersRequires access

Paleomagnetism of the Early Miocene Kani Group in southwest Japan and its implication for the opening of the Japan Sea

Akira Hayashida, Takako Fukui, Masayuki Torii

Open publisher page 98 citations

Abstract

Paleomagnetic directions of a volcanic and sedimentary sequence of the Kani Basin, ranging from 22 to 16 Ma, show a clockwise declination shift of about 50°. This result implies that detectable rotation of Southwest Japan did not occur in this period, but after 16 Ma. The initial opening of the Japan Sea before 16 Ma might have caused a southeastward translation of Southwest Japan, which was then followed by clockwise rotation between 16 and 14 Ma.

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What this paper is about

Paleomagnetic directions of a volcanic and sedimentary sequence of the Kani Basin, ranging from 22 to 16 Ma, show a clockwise declination shift of about 50°. This result implies that detectable rotation of Southwest Japan did not occur in this period, but after 16 Ma. The initial opening of the Japan Sea before 16 Ma might have caused a southeastward translation of Southwest Japan, which was then followed by clockwise rotation between 16 and 14 Ma.

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Available abstract

Paleomagnetic directions of a volcanic and sedimentary sequence of the Kani Basin, ranging from 22 to 16 Ma, show a clockwise declination shift of about 50°. This result implies that detectable rotation of Southwest Japan did not occur in this period, but after 16 Ma. The initial opening of the Japan Sea before 16 Ma might have caused a southeastward translation of Southwest Japan, which was then followed by clockwise rotation between 16 and 14 Ma.

Key concepts: Paleomagnetism, Clockwise, Geology, Declination, Paleontology, Sedimentary rock, Volcano, Structural basin

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Paleomagnetism of the Early Miocene Kani Group in southwest Japan and its implication for the opening of the Japan Sea — Research Paper | ScholarLens