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Muroto Peninsula

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Series: GSA Special Papers
Published: 01 January 1993
DOI: 10.1130/SPE273-p25
... The Shimanto Group records a Cretaceous through Miocene history of subduction/accretion along the southwest margin of Japan. We used vitrinite reflectance on over 200 samples of shale and slate to determine regional trends in diagenesis and low-grade metamorphism on the Muroto Peninsula...
Series: GSA Special Papers
Published: 01 January 1993
DOI: 10.1130/SPE273-p1
... studies completed on the Muroto Peninsula of Shikoku. In particular, we focus on the temporal and geometric relations between peak heating events and discrete stages in the deformation history. Rocks of the Shimanto Belt display the effects of a complicated history of polyphase folding, faulting...
Series: GSA Special Papers
Published: 01 January 1993
DOI: 10.1130/SPE273-p151
... The Shimanto accretionary complex on the Muroto Peninsula of Shikoku comprises two major units of Tertiary strata the Murotohanto subbelt (Eocene-Oligocene) and the Nabae subbelt (Oligocene-Miocene). Field-based structural analyses and laboratory measurements of thermal maturity show...
Series: GSA Special Papers
Published: 01 January 1993
DOI: 10.1130/SPE273-p103
... beneath the Muroto Peninsula in the middle Miocene (Byrne and Hibbard, 1987). However formed, the landward-vergent structures probably contributed to the enhanced steepening of strata in the Shimanto Belt in Shikoku with respect to other areas along strike. ...
Series: GSA Special Papers
Published: 01 January 1993
DOI: 10.1130/SPE273-p121
... To place thermotectonic constraints on the evolution of the Cretaceous to Neogene Shimanto Belt, we carried out fission-track (FT) analyses of detrital apatite and zircon collected from both sandstone turbidites and blocks in mélanges on the Muroto Peninsula, Shikoku. Eight FT apatite ages show...
Series: GSA Special Papers
Published: 01 January 1993
DOI: 10.1130/SPE273-p45
... Tertiary rocks of the Shimanto Belt represent the youngest subaerial part of the accretionary margin of southwest Japan. Measurements of mean vitrinite reflectance (%R m ) from shales and cleaved metapelites show that the Eocene through early Miocene strata on the Muroto Peninsula of Shikoku...
Journal Article
Journal: GSA Bulletin
Published: 01 October 1990
GSA Bulletin (1990) 102 (10): 1420–1438.
...LEE DITULLIO; TIM BYRNE Abstract Detailed structural analysis of coherent turbidites in a part of the Eocene Shimanto belt on the Muroto Peninsula, Shikoku Island, Japan, reveals a structural evolution that is typical of the shallow levels of accretionary prisms in style and sequence...
Series: GSA Special Papers
Published: 15 August 2018
DOI: 10.1130/2018.2534(08)
EISBN: 9780813795348
... portions close to the northwestern chilled margin, which is inaccessible. Figure 1. Index and general geologic map of the outer zone of southwest Japan and the Muroto Peninsula of Shikoku Island, with the location of study area at Cape Muroto. Figure 8. Hysteresis loops of samples from zone...
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Series: GSA Special Papers
Published: 15 August 2018
DOI: 10.1130/2018.2534(01)
EISBN: 9780813795348
... been documented at Sites C0011 and C0012 of the Integrated Ocean Drilling Program (Kumano transect) and Sites 1173 and 1177 of the Ocean Drilling Program (Muroto and Ashizuri transects, respectively). This paper focuses on three noteworthy aspects of that history: (1) the onset of substantial...
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Series: GSA Special Papers
Published: 15 August 2018
DOI: 10.1130/2018.2534(05)
EISBN: 9780813795348
... Philippine Sea plate, a locally dense and rigid upper plate, and stable or unstable frictional properties of the plate-boundary megathrust with abnormal pore-fluid pressure. The most prominent rupture segment boundary in the Nankai Trough is located off the Kii Peninsula. When the rupture starts...
FIGURES | View All (8)
Journal Article
Published: 01 February 2009
Bulletin of the Seismological Society of America (2009) 99 (1): 110–122.
...Koichiro Obana; Shuichi Kodaira; Yoshiyuki Kaneda Abstract The rupture areas of the large interplate thrust earthquakes along the Nankai trough, offshore southwestern Japan, are divided into several segments. The 1944 Tonankai earthquake ruptured one of the segments off of the Kii Peninsula...
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Image
Location map showing the study area.  1 , the Japan archipelago;  2 , the M...
Published: 01 March 2012
F igure 1 Location map showing the study area. 1 , the Japan archipelago; 2 , the Muroto Peninsula, enlarged area of 1 ; 3 , Tonohama area, enlarged area of 2 . Star indicates the location where the materials described here were collected.
Series: Geological Society, London, Memoirs
Published: 01 January 2014
DOI: 10.1144/M40.12
EISBN: 9781862397002
... at the seaward edge. The process of wave attenuation on this type of platform and weathering-induced strength reduction of rocks are incorporated into the model. The model is applied to the southwestern coast of the Kii Peninsula and a platform at Ebisu-jima of the Izu Peninsula. Long-term development rates...
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Series: Geological Society, London, Geology of Series
Published: 01 January 2016
DOI: 10.1144/GOJ.5
EISBN: 9781862397064
... with prominent capes at their southern tips (e.g. Cape Shiono in the Kii Peninsula, capes Muroto and Ashizuri in Shikoku, Fig. 2 d. 2 ). Uyeda & Miyashiro (1974) proposed an idea that the interactions between the Kula-Pacific spreading ridge and trench in the Late Cretaceous western Pacific margin...
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Image
Figure 2. (A) Lower-hemisphere, equal-area projection showing the geometric...
Published: 01 June 2002
of arrows) compiled from southwest Japan. Each arrow inferred on the basis of between 29 and 159 fabric measurements (mean = 91). Red and purple arrows inferred from early-stage and late-stage faults on the Muroto Peninsula, respectively (directions from rose diagrams in B and C). Three black arrows (1, 2
Series: Geological Society, London, Geology of Series
Published: 01 January 2016
DOI: 10.1144/GOJ.15
EISBN: 9781862397064
... rather than marginal parts of the islands (Yokoyama et al. 1996; Nakada et al. 1998; Nakada Okuno 2011; Okuno et al. 2014). Local tectonics have also strongly impacted relative sea levels since middle Holocene times, ranging from +30 m in the southern tip of the uplifting Boso Peninsula, SE...
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Journal Article
Journal: GSA Bulletin
Published: 01 June 2002
GSA Bulletin (2002) 114 (6): 656–664.
... of arrows) compiled from southwest Japan. Each arrow inferred on the basis of between 29 and 159 fabric measurements (mean = 91). Red and purple arrows inferred from early-stage and late-stage faults on the Muroto Peninsula, respectively (directions from rose diagrams in B and C). Three black arrows (1, 2...
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Journal Article
Published: 01 July 2003
Journal of Sedimentary Research (2003) 73 (4): 589–602.
... of stratigraphic evolution of a trench-slope basin within the Nankai subduction system of southwest Japan ( Fig. 1 ). We drilled and cored continuously through the basin-prism contact at two sites seaward of the Muroto Peninsula of Shikoku (Holes 1175A and 1176A). Drilling data from the Muroto study area...
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Series: Geological Society, London, Geology of Series
Published: 01 January 2016
DOI: 10.1144/GOJ.18
EISBN: 9781862397064
... accretionary mélanges and sediments of the Shimanto Belt appear further south, coastal exposures of which can be visited on daytrips to the SW (Tosa-Kure) or SE (Muroto Peninsula). Whereas the mélanges exposed at Tosa-Kure are reachable by JR train (Excursion 8; a journey which offers the added opportunity...
FIGURES | View All (4)
Journal Article
Journal: Geology
Published: 01 August 2006
Geology (2006) 34 (8): 701–704.
... available for interacting with the subduction thrust. In 1999 we acquired 3-D seismic reflection data across the Nankai Trough south of the Muroto Peninsula ( Fig. 1 1 ) ( Bangs et al., 2004 ). For the first time, 3-D data have fortuitously captured images of a subducting seamount, part of the Kinan...
FIGURES