Paleomagnetic evidence of the rotation of central Japan and the paleoposition of Japan

Hirooka, Kimio; Yamada, Ryoji; Yamashita, Masaru; Takeuchi, Akira

doi:10.1016/0031-0182(90)90185-a

Cited by 13 publications

(4 citation statements)

References 16 publications

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“…The highest rates of tectonic subsidence are recorded during this period (Fig. 13), which is coincident with the period of rapid arc rotation and extension implied by paleomagnetic evidence assembled by Matsuda (1983, 1987), Otofuji et al (1985), Hirooka et al (1990), and Otofuji et al (1991). The steep middle Miocene segment of the average tectonic curve largely reflects the period of rapid subsidence responsible for formation of the array of smaller sub-basins around the perimeter of the Japan Sea in turn implying rapid propagation of rifts into the arc regions and other marginal areas of previously weakened continental crust (Fig.…”

Section: Tectonic Subsidencementioning

confidence: 54%

Subsidence of the Japan Sea: Stratigraphic Evidence from ODP Sites and Onshore Sections

Ingle¹

1992

Proceedings of the Ocean Drilling Program

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Abundant geologic, geophysical, and paleontologic evidence from ODP drilling in the Japan Sea and from adjacent continental and insular areas demonstrates that the sea has evolved rapidly over the past 32 m.y. and is now in an early stage of compressive destruction. Stratigraphic, geochronologic, and paleobathymetric data derived from ODP Sites 794, 795, 796,797, 798, and 799, offshore exploration wells, and uplifted and deformed Neogene stratigraphic sections exposed on the Korean Peninsula and the islands of Honshu, Hokkaido, and Sakhalin were used to analyze the timing and patterns of backarc subsidence characterizing each stage in the evolution of the Japan Sea. An extensional tectonic regime and subsidence dominate backarc evolution ca. 32 Ma to 10 Ma at which time regional uplift was initiated marking the onset of a compressional regime that continues to the present. Backstripping techniques were applied to five Neogene stratigraphic columns in contrasting depositional, crustal, and tectonic settings to derive estimates of variations in rates of total and tectonically driven subsidence, presumably reflecting fundamental changes in crustal behavior during backarc evolution. The five Neogene sequences analyzed include; (1) the Pohang onshore section on the southeastern Korean Peninsula, (2) the Dolgorae-1 offshore well in the southern Tsushima Basin, (3) the Oga Peninsula onshore section in northwestern Honshu, (4) ODP Site 794 at the juncture between the Japan and Yamato basins, and (5) the southern Sakhalin onshore section representing the northern margin of the Japan Sea. Initial rifting, extension, and thermal subsidence in the Japan Sea region commenced in late Oligocene time (ca. 32-25 Ma) at rates of < 150 m/m.y. accompanied by widespread deposition of non-marine sediment and volcanic units and probable early spreading in the Japan Basin. A period of accelerating subsidence (100-500 m/m.y.), backarc spreading, rift propagation, massive basaltic magmatism, and crustal extension began in the early Miocene ca. 24-23 Ma culminating in subsidence of the Japan, Yamato, and Tsushima basins to near their present depths (2-3 km) by 20-18 Ma. Slow subsidence persisted from 18 Ma to 16-15 Ma when a second episode of rapid subsidence occurred as rifts propagated into the arc, arc-flanks, and other areas of weakened continental crust around the perimeter of the sea creating numerous sub-basins accompanied by middle Miocene rotation of southwest Japan and a second pulse of basaltic magmatism. Maximum rates of tectonic subsidence during middle Miocene sub-basin formation exceeded 900 m/m.y. pointing to a pull-apart origin for these features which were initially sediment-starved and filled with pelagic and hemipelagic diatomaceous muds. Relatively low rates of subsidence (<200 m/m.y.) characterize the tectonically quiescent middle-late Miocene stage in the evolution of the sea from 12.5 to 10 Ma. Evidence of initial regional uplift (10-100 m/m.y.) appears in the southern Japan Sea ca. 11-10 Ma with compressional uplif...

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Section: Tectonic Subsidencementioning

confidence: 54%

Subsidence of the Japan Sea: Stratigraphic Evidence from ODP Sites and Onshore Sections

Ingle¹

1992

Proceedings of the Ocean Drilling Program

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“…The Niigata direction reported by Hirooka et al (1990) is unusual and suggests a local counterclockwise rotation. The Japan Sea coastal region, on which Niigata is located, is characterized by a severe contractile deformation of the thick sedimentary and volcanic sequences that fill the NNE-trending Early Miocene structural depressions (Yamaji, 1990;Sato, 1994).…”

Section: Middle Miocene Paleomagnetic Pole For Northeastern Japan Andmentioning

confidence: 99%

“…16-11 Ma) paleomagnetic results from other areas (Tosha and Hamano, 1988;Yamazaki, 1989;Hirooka et al, 1990;Fujiwara, 1992;Hoshi and Takahashi, 1997;Takahashi et al, 1999). Selected results are listed in Table 2, which originate from the entire length of northeastern Japan, including southwestern Hokkaido (Matsumae), northern Honshu (Oga, Ishikoshi, Matsushima, Ryozen), and central Honshu (Motegi, Niigata).…”

Section: Middle Miocene Paleomagnetic Pole For Northeastern Japan Andmentioning

confidence: 99%

“…For example, Hirooka et al (1990) and Momose et al (1990) reported northwesterly directions from sediments in the back-arc region that were dated biostratigraphically at 15-14 Ma. Such directions are considered to represent intra-arc block rotation during or after the formation of the Japan Sea (Oda et al, 1989;Hirooka et al, 1990;Hoshi and Matsubara, 1998;Yamaji et al, 1999;Mino et al, 2001). Yamaji et al (1999) argued that the block rotation was associated with transtensional deformation.…”

Section: Introductionmentioning

confidence: 99%

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Paleomagnetism of the Ishikoshi Andesite: a Middle Miocene paleomagnetic pole for northeastern Japan and tectonic implications

Hoshi

Teranishi

2007

Earth Planet Sp

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To determine a Middle Miocene paleomagnetic pole for northeastern Japan and discuss its tectonic implications, we obtained new paleomagnetic results from Middle Miocene (about 14 Ma) dacite and andesite flows of the Ishikoshi Andesite. Characteristic remanent magnetizations were isolated from 12 lava sites by means of detailed alternating field and thermal demagnetizations. Analysis of demagnetization results and rock magnetic experiments indicated that magnetite or Ti-poor titanomagnetite is the main magnetic carrier. We obtained a formation mean direction (D = 9.2• , I = 65.9• , α 95 = 7.3• , k = 40.5, N = 11) and compared it with published paleomagnetic results from other areas of northeastern Japan to discuss tectonic rotation. This comparison provided a mean paleomagnetic pole (85.9• N, 236.6• E, A 95 = 6.2• , K = 115.9, N = 6) that we consider represents the Middle Miocene pole for northeastern Japan. It is statistically indistinguishable from coeval poles for southwestern Japan, South Korea, and northern China, and we therefore conclude that northeastern Japan as a whole has not been subjected to tectonic rotation since the Middle Miocene. A reassessment of geologic and paleomagnetic data suggests that a previous model of the Late Miocene or later counterclockwise rotation of northeastern Japan is based on tilt-uncorrected paleomagnetic directions from tilted rock units.

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Opposite rotations in the Central Andes Bend: Tectonic scenario compared to other cases of opposite rotations and implications for long-term subduction at continental arcs

Martin

2024

Journal of South American Earth Sciences

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Paleomagnetic evidence of the rotation of central Japan and the paleoposition of Japan

Cited by 13 publications

References 16 publications

Subsidence of the Japan Sea: Stratigraphic Evidence from ODP Sites and Onshore Sections

Subsidence of the Japan Sea: Stratigraphic Evidence from ODP Sites and Onshore Sections

Paleomagnetism of the Ishikoshi Andesite: a Middle Miocene paleomagnetic pole for northeastern Japan and tectonic implications

Opposite rotations in the Central Andes Bend: Tectonic scenario compared to other cases of opposite rotations and implications for long-term subduction at continental arcs

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