A model of late Cenozoic transcurrent motion and deformation in the fore-arc of northeast Japan: Constraints from geophysical studies

Itoh, Yasuto; Tsuru, Takeshi Go

doi:10.1016/j.pepi.2006.02.009

Cited by 15 publications

(19 citation statements)

References 37 publications

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“…Thus, dextral deformation and CW rotation dominantly occurred on the forearc after the demise of the Izanagi Plate. Itoh and Tsuru (2006) inferred a similar rotation sequence (CCW to CW) in the offshore basin of northeast Japan based on remanence directions of the late Cretaceous and Eocene oriented core samples in a deep borehole (MITI Sanriku-oki in Figure 1). …”

Section: Sense Of Lateral Motion Since the Cretaceousmentioning

confidence: 91%

“…To the south of our study area, the contemporaneous forearc basin of northeast Japan seems to have suffered similar segmentation, and wrench deformation on this region was inferred from paleomagnetic data. Itoh and Tsuru (2006) reported paleomagnetic directions from a borehole on the forearc (MITI Sanriku-oki in Figure 1), which are suggestive of clockwise rotation since the Eocene, and proposed a tectonic model of forearc slivers divided by dextral faults.…”

Section: Early Paleogene Settingmentioning

confidence: 99%

“…Its modern analogue can be seen in the Barisan fault in the Sunda arc (Dickinson 1995). The southern part of the possible bisecting fault system was described by Itoh and Tsuru (2006). They found strike-slip faults within the northeast Japan forearc based on seismic interpretations.…”

Section: Early Paleogene Settingmentioning

confidence: 99%

“…However, our model of pull-apart basin formation indicates a considerable amount of south-southeastward migration of the forearc sliver. Itoh and Tsuru (2006) assumed more than 200 km of total migration on the basis of a reconstruction of the conspicuous geomagnetic anomaly on the forearc region. Such migration would have caused thrusting sliver toward the plate boundary and an increased rate of convergence between the oceanic and continental plates.…”

Section: Mass Balance On the Convergent Marginmentioning

confidence: 99%

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Mechanism of long-standing Cenozoic basin formation in central Hokkaido: an integrated basin study on an oblique convergent margin

Itoh

Takano

Kusumoto

et al. 2014

Prog Earth Planet Sci

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The basin-forming process along a convergent margin off the eastern coast of Eurasia was pursued on the basis of geological, geochemical, and geophysical approaches. Central Hokkaido has been a site of vigorous tectonic events throughout the Cenozoic reflecting the long-standing subduction of oceanic plates in the region. Geochemical modeling provided an estimate of the eroded Paleogene unit in the study area. Data on the considerable thickness of the missing unit implied continued subsidence of the forearc region and its subsequent exhumation under the emergence of a compressive regime synchronous with the back-arc opening stage. Spatially large facies variety in the Paleogene system suggests that basin compartmentalization occurred as a result of the trench-parallel component of the plate convergence. Right-lateral motion seems to have been the dominant type in Hokkaido and the forearc of northeast Japan since the Late Cretaceous, except for a left-lateral episode during rapid subsidence of the Izanagi Plate around 110 Ma. Numerical modeling demonstrated that dextral slip on a bunch of longitudinal strike-slip faults restored the Neogenedepocenters in central Hokkaido, together with an east-west compressive regime related to an arc-arc collision.

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Section: Sense Of Lateral Motion Since the Cretaceousmentioning

confidence: 91%

Section: Early Paleogene Settingmentioning

confidence: 99%

Section: Early Paleogene Settingmentioning

confidence: 99%

Section: Mass Balance On the Convergent Marginmentioning

confidence: 99%

See 2 more Smart Citations

Mechanism of long-standing Cenozoic basin formation in central Hokkaido: an integrated basin study on an oblique convergent margin

Itoh

Takano

Kusumoto

et al. 2014

Prog Earth Planet Sci

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“…However, NW-SE extensional tectonics of the KYB-AOT and N-S-trending dextral shear zone of the MOUZ and SBUZ in the Middle Miocene may support the arc-parallel orientation of the spreading axes (Kimura and Tamaki, 1986). The seismic stratigraphy and structural analyses in the forearc basins of NE Japan suggest that a N-S elongated large basin occupied the space between Eastern Hokkaido (the Kurile Arc) and the NE Japan Arc in the Oligocene (Itoh and Tsuru, 2006), and that this basin records right-lateral transcurrent motion causing Eastern Hokkaido to move southward. The deformation of the forearc basin in the NE Japan Arc implies a N-S direction of spread in the Kurile Basin, at least in the Oligocene.…”

Section: The Direction Of Spread Of the Kurile Basinmentioning

confidence: 90%

Evolution of collision-related basins in the eastern end of the Kurile Basin, Okhotsk Sea, Northwestern Pacific

TuZino

Murakami

2008

Journal of Asian Earth Sciences

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Relationship between outer forearc subsidence and plate boundary kinematics along the Northeast Japan convergent margin

Regalla

Fisher

Kirby

et al. 2013

Geochem Geophys Geosyst

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[1] Tectonic erosion along convergent plate boundaries, whereby removal of upper plate material along the subduction zone interface drives kilometer-scale outer forearc subsidence, has been purported to explain the evolution of nearly half the world's subduction margins, including part of the history of northeast Japan. Here, we evaluate the role of plate boundary dynamics in driving forearc subsidence in northeastern Japan. A synthesis of newly updated analyses of outer forearc subsidence, the timing and kinematics of upper plate deformation, and the history of plate convergence along the Japan trench demonstrate that the onset of rapid fore-arc tectonic subsidence is contemporaneous with upper plate extension during the opening of the Sea of Japan and with an acceleration in convergence rate at the trench. In Plio-Quaternary time, relative uplift of the outer forearc is contemporaneous with contraction across the arc and a decrease in plate convergence rate. The coincidence of these changes across the forearc, arc, backarc system appears to require an explanation at the scale of the entire plate boundary. Similar observations along other western Pacific margins suggest that correlations between forearc subsidence and major changes in plate kinematics are the rule, rather than the exception. We suggest that a significant component of forearc subsidence at the northeast Japan margin is not the consequence of basal tectonic erosion, but instead reflects dynamic changes in plate boundary geometry driven by temporal variations in plate kinematics. If correct, this model requires a reconsideration of the mass balance and crustal recycling of continental crust at nonaccretionary margins.

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A model of late Cenozoic transcurrent motion and deformation in the fore-arc of northeast Japan: Constraints from geophysical studies

Cited by 15 publications

References 37 publications

Mechanism of long-standing Cenozoic basin formation in central Hokkaido: an integrated basin study on an oblique convergent margin

Mechanism of long-standing Cenozoic basin formation in central Hokkaido: an integrated basin study on an oblique convergent margin

Evolution of collision-related basins in the eastern end of the Kurile Basin, Okhotsk Sea, Northwestern Pacific

Relationship between outer forearc subsidence and plate boundary kinematics along the Northeast Japan convergent margin

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