By Masao Nakanishi (auth.), Yujiro Ogawa, Ryo Anma, Yildirim Dilek (eds.)
Accretionary prisms in convergent margins are usual laboratories for exploring preliminary orogenic methods and mountain construction episodes. also they are an enormous part of continental development either vertically and laterally. Accretionary prisms are seismically hugely energetic and their inner deformation through megathrusting and out-of-sequence faulting are a huge predicament for earthquake and tsunami harm in lots of coastal towns round the Pacific Rim. The geometries and constructions of contemporary accretionary prisms were good imaged seismically and during deep drilling initiatives of the sea Drilling software (and lately IODP) over the last 15 years. larger knowing of the spatial distribution and temporal development of accretionary prism deformation, structural and hydrologic evolution of the décollement sector (tectonic interface among the subducting slab and the higher plate), chemical gradients and fluid stream paths inside of accretionary prisms, contrasting stratigraphic and deformational framework along-strike in accretionary prisms, and the distribution and ecosystems of organic groups in accretionary prism settings is most vital in analyzing the evolution of historical complicated sedimentary terrains and orogenic belts by way of subduction-related approaches.
This e-book is a suite of interdisciplinary papers documenting the geological, geophysical, geochemical, and paleontological beneficial properties of recent accretionay prisms and ditchs within the northwestern Pacific Ocean, in accordance with many submersible dive cruises, ODP drilling tasks, and geophysical surveys over the past 10 years. additionally it is numerous papers offering the result of systematic built-in reports of contemporary to old on-land accretionary prisms compared to sleek analogues. the person chapters are information and photograph wealthy, delivering an incredible source of data and data from those serious parts of convergent margins for researchers, school individuals, and graduate and undergraduate scholars. As such, the e-book should be an important and detailed contribution within the wide fields of worldwide tectonics, geodynamics, marine geology and geophysics, and structural geology and sedimentology.
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Additional info for Accretionary Prisms and Convergent Margin Tectonics in the Northwest Pacific Basin
1989), geomagnetic measurements were conducted by the author during six cruises by R/V Hakuho-maru, KH-90-1 (Nakanishi et al. 1991), KH-92-3 (Nakanishi et al. 1993), KH-93-1 (Nakanishi 1993), KH-96-3, KH-03-1, and KH-06-1, four cruises by R/V KAIREI, KR98-07, KR99-11 (Ogawa 1999), KR04-08 (Nakanishi et al. 2004), and KR06-03 (Nakanishi 2007), and one cruise by R/V YOKOSUKA, YK08-09 (Nakanishi and Noguchi 2008). , Fujisawa 2009). html). The geomagnetic data obtained in KR08-10 cruise by R/V KAIREI was personally obtained from the shipboard scientists of the cruises.
V. 2011 39 40 Y. Ogawa Moreover, a large-scale submarine landslide has developed elsewhere on the landward slope, the orientation of which is controlled by the lineaments of normal faults in the subducting Pacific slab (Kobayashi 1991; Ogawa and Kobayashi 1994; Sasaki 2004; Nakanishi et al. 2011). The Nankai trough and the Japan trench margins differ primarily in that the former is characterized by a sediment-supplied trench floor without a normal-faulted slab, and the latter by a sediment-starved trench and a normal-faulted slab.
Lightly shaded areas are topographic heights as seamounts. Darkly shaded areas are above 5,600 m depth and outline the outer swells. Barbed lines show the approximate location of trench axes with barbs on the overriding plate. 7 Shaded bathymetric map of the western Kuril Trench. Contour interval is 50 m. 8. Yellow lines show the approximate location of trench axes and ridges is less than 20 km. The bending-related topographic structures are limited to areas less than 70 km away from the trench axis (Fig.
Accretionary Prisms and Convergent Margin Tectonics in the Northwest Pacific Basin by Masao Nakanishi (auth.), Yujiro Ogawa, Ryo Anma, Yildirim Dilek (eds.)