Provenance of the Upper Triassic Mine Group, Southwest Japan.

Kametaka, Masao

doi:10.5575/geosoc.105.651

Cited by 15 publications

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“… Distribution of Lower Permian tuffaceous clastic strata, ages constrained by radiolarians (⋆) in the Paleozoic terranes of southwest Japan. Base map is modified after Kametaka (1999). As , occurrence of Albaillella sinuata .…”

Section: Discussionmentioning

confidence: 99%

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Radiolaria‐dated Lower Permian clastic‐rock sequence in the Fukuji area of the Hida‐gaien terrane, central Japan, and its inter‐terrane correlation across Southwest Japan

Kurihara

Kametaka

2008

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The stratigraphy and radiolarian age of the Mizuyagadani Formation in the Fukuji area of the Hida-gaien terrane, central Japan, represent those of Lower Permian clastic-rock sequences of the Paleozoic non-accretionary-wedge terranes of Southwest Japan that formed in island arc-forearc/back-arc basin settings. The Mizuyagadani Formation consists of calcareous clastic rocks, felsic tuff, tuffaceous sandstone, tuffaceous mudstone, sandstone, mudstone, conglomerate, and lenticular limestone. Two distinctive radiolarian faunas that are newly reported from the Lower Member correspond to the zonal faunas of the Pseudoalbaillella u-forma morphotype I assemblage zone to the Pseudoalbaillella lomentaria range zone (Asselian to Sakmarian) and the Albaillella sinuata range zone (Kungurian). In spite of a previous interpretation that the Mizuyagadani Formation is of late Middle Permian age, it consists of Asselian to Kungurian tuffaceous clastic strata in its lower part and is conformably overlain by the Middle Permian Sorayama Formation. An inter-terrane correlation of the Mizuyagadani Formation with Lower Permian tuffaceous clastic strata in the Kurosegawa terrane and the Nagato tectonic zone of Southwest Japan indicates the presence of an extensive Early Permian magmatic arc(s) that involved almost all of the Paleozoic non-accretionary-wedge terranes in Japan. These new biostratigraphic data provide the key to understanding the original relationships among highly disrupted Paleozoic terranes in Japan and northeast Asia.

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Section: Discussionmentioning

confidence: 99%

“…The felsic tuff, tuffaceous mudstone, and mudstone yield the radiolarian zonal fauna of the uppermost Wolfcampian Ps. scalprata m. rhombothoracata assemblage zone of Ishiga (1986 Kametaka (1999). As, occurrence of Albaillella sinuata.…”

Section: Correlation With Lower Permian Clastic Rocks Within Paleozoimentioning

confidence: 99%

Radiolaria‐dated Lower Permian clastic‐rock sequence in the Fukuji area of the Hida‐gaien terrane, central Japan, and its inter‐terrane correlation across Southwest Japan

Kurihara

Kametaka

2008

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“…Cr# 1.4 86.8 Fig. 7; Ishiwatari, 1985aIshiwatari, , b , 1987, 1961;, 1962 ;, 2006, , 2010, , 1991 , Kobayashi, 2003 3 IBM (Arai, 1980) and the Oeyama ophiolite in the Kotaki area (Machi and Ishiwatari, 2010); Oeyama (E) = eastern body of the Oeyama ophiolite (Kurokawa, 1985) and the Oeyama ophiolite in the Kotaki area (Machi and Ishiwatari, 2010); Yakuno = Yakuno ophiolite (Ishiwatari, 1985a, b); Kawanishi = serpentine grains in the Inagawa Complex of the Ultra-Tamba Terrane (this study). , 1989 37-38 Ma;Haraguchi et al, 2003Haraguchi et al, , 1985Taylor, 1992424 16 405 18 Ma Fujii et al, 2008, 443.8 4.1 Tsutsumi et al, 2014 500 Ma -Tagiri et al, 2011;, 201192-114 Ma Hickey-Vargas, 2005MORB , 1989, 2015, 1984 , 2015…”

Section: -80 50-70mentioning

confidence: 99%

Discovery of serpentine gravel from the Ultra-Tamba Terrane in the Kawanishi City, Hyogo Prefecture, southwestern Japan:

Sugamori¹,

Ishiwatari²

2015

Jour. Geol. Soc. Japan

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The Inagawa Complex, located in Kawanishi City, Hyogo Prefecture, southwestern Japan, is interpreted as a late Permian subduction-related accretionary complex of the Ultra-Tamba Terrane. The complex contains a conglomerate bed, with clasts consisting predominantly of felsic volcanic rocks, serpentinite, and schist, with subordinate amounts of granite, basalt, and sedimentary rock (chert and mudstone, containing late Paleozoic radiolarians). The provenance of the conglomerate is inferred to be a volcanic arc, where volcanic rocks overlay an accretionary complex, sedimentary rocks, metamorphic rocks, and granite. Serpentine grains contain spinel crystals that are unaltered in their cores and exhibit highly irregular shapes resembling so-called dancing spinel , which are characteristic of mantle peridotites of the early Paleozoic Oeyama ophiolite. Geochemical analysis of the spinel crystals (Cr#-and Cr#) confirms that they originate from the Oeyama ophiolite. The discovery of serpentinite from the Oeyama ophiolite in the late Permian subduction-related accretionary complex of the Ultra-Tamba Terrane suggests that the Oeyama ophiolite was exposed in the forearc area of the Permian Maizuru (Yakuno) arc , which was floored predominantly by oceanic crust of the Permian Yakuno ophiolite.

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“…Serpentinite, hornfels, and grandite‐garnet clasts suggest that a progressive denudation of the Permian volcanic arc and ophiolite continued in Triassic time (Takizawa 1985b; Adachi 1990; Adachi & Suzuki 1992; Takeuchi 1994a; Kametaka 1997, 1999). Pyrope‐rich almandine garnet and detrital monazites with electron probe microanalysis (EPMA) ages of 1800–1930 Ma (Hayasaka et al .…”

Section: Provenance Of Permo–jurassic Depositsmentioning

confidence: 99%

Detrital heavy minerals from Lower Jurassic clastic rocks in the Joetsu area, central Japan: Paleo‐Mesozoic tectonics in the East Asian continental margin constrained by limited chloritoid occurrences in Japan

Kamikubo

Takeuchi

2011

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Detrital chloritoids were extracted from the Lower Jurassic sandstones in the Joetsu area of central Japan. The discovery of detrital chloritoids in the Joetsu area, in addition to two previous reports, confirms their limited occurrence in the Jurassic strata of the Japanese islands. This finding emphasizes the importance of the denudation of chloritoid-yielding metamorphic belts in Jurassic provenance evolution, in addition to a change from an active volcanic arc to a dissected arc that has already been described. Possible sources for the detrital chloritoids from the Jurassic sandstones are the PermoTriassic chloritoid-yielding metamorphic rocks distributed in dispersed tectonic zones (Hida, Unazuki, Ryuhozan and Hitachi Metamorphic Rocks), which are in fault contact with Permian to Jurassic accretionary complexes in the Japanese islands. This is because all of these pre-Jurassic chloritoid-yielding metamorphic rocks have a CarboniferousPermian depositional age and a Permo-Triassic metamorphic age, whereas a PermianTriassic metamorphic age on the Hitachi Metamorphic Rocks remains unreported. In addition, most metamorphic chloritoids imply a former stable land surface that has evolved into an unstable orogenic area. Therefore, the chloritoid-yielding metamorphic rocks might form a continuous metamorphic belt originating from a passive continental margin in East Asia. Evidence from paleontological and petrological studies indicates that the PermoTriassic metamorphic belt relates to a collision between the Central Asian Orogenic Belt and the North China Craton. The evolution of the Permian-Jurassic provenance of Japanese detrital rocks indicates that the temporal changes in detritus should result from sequences of collision-related uplifting processes.

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Provenance of the Upper Triassic Mine Group, Southwest Japan.

Cited by 15 publications

References 0 publications

Radiolaria‐dated Lower Permian clastic‐rock sequence in the Fukuji area of the Hida‐gaien terrane, central Japan, and its inter‐terrane correlation across Southwest Japan

Radiolaria‐dated Lower Permian clastic‐rock sequence in the Fukuji area of the Hida‐gaien terrane, central Japan, and its inter‐terrane correlation across Southwest Japan

Discovery of serpentine gravel from the Ultra-Tamba Terrane in the Kawanishi City, Hyogo Prefecture, southwestern Japan:

Detrital heavy minerals from Lower Jurassic clastic rocks in the Joetsu area, central Japan: Paleo‐Mesozoic tectonics in the East Asian continental margin constrained by limited chloritoid occurrences in Japan

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