Sedimentary history of the late Cretaceous-Paleocene Nemuro Group, Hokkaido, Japan: A forearc basin of the Paleo-Kuril arc-trench system.

和雄, 君波

doi:10.5575/geosoc.89.607

Cited by 29 publications

(21 citation statements)

References 29 publications

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“…Hb, Horobetsugawa complex (Ueda et al . 2001); Nm, volcano‐sedimentary sequence in the Nemuro Belt (Kiminami 1983); Nz, Naizawa complex (Ueda et al . 2001); ONC, Oku‐Niikappu complex (Kiyokawa 1992 and the present study); Ru, Hidaka Belt accretionary complex, Rurochi Formation, by Kiminami et al .…”

Section: Discussionmentioning

confidence: 99%

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Tectonic accretion of a subducted intraoceanic remnant arc in Cretaceous Hokkaido, Japan, and implications for evolution of the Pacific northwest

Ueda

Miyashita

2005

Island Arc

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An accretionary complex, which contains fragments of a remnant island arc, was newly recognized in the Cretaceous accretionary terranes in Hokkaido, Japan. It consists of volcanics, volcanic conglomerate, intermediate to ultramafic intrusive rocks with islandarc affinity including boninitic rocks, accompanied by chert and deformed terrigenous turbidites. Compared with the results of modern oceanic surveys, the preserved sequence from island-arc volcanics to chert, via reworked volcanics, is indicative of intraoceanic remnant arc, because the sequence suggests an inactive arc isolated within a pelagic environment before its accretion. The age of a subducting oceanic crust can be discontinuous before and after a remnant-arc subduction, resulting in abrupt changes in accretion style and metamorphism, as seen in Cretaceous Hokkaido. Subduction of such an intraoceanic remnant arc suggests that the subducted oceanic plate in the Cretaceous was not an extensive oceanic plate like the Izanagi and/or Kula Plates as previously believed by many authors, but a marginal basin plate having an arc-back-arc system like the presentday Philippine Sea Plate.

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Section: Discussionmentioning

confidence: 99%

“…1999; Silantyev et al . 2000), in Sakhalin (Schmidt Peninsula and East Sakhalin Mountains; Raznitsin 1982; Rozhdestvensky 1986), in the Kurile Outer Arc (Nemuro Belt; Kiminami 1983), in the Daito Ridge province in the western Philippine Sea (Shiki et al . 1977), and in Halmahera Island in Indonesia (Hall et al .…”

Section: Discussionmentioning

confidence: 99%

Tectonic accretion of a subducted intraoceanic remnant arc in Cretaceous Hokkaido, Japan, and implications for evolution of the Pacific northwest

Ueda

Miyashita

2005

Island Arc

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“…Other igneous rocks make up a remnant arc extending from the southwestern tip of the Kamchatka Peninsula toward the Academy of Science Plateau on the north side of the Kuril backarc basin. These two groups of igneous rocks originally formed the crust of the PKA and its forearc basin (Kiminami, 1983; Kimura & Tamaki, 1985; Okada, 1982, 1983; Figure 2).…”

Section: Overview Of the Paleo‐kuril Arc–trench And Its Tectonic Settingmentioning

confidence: 99%

Origin and evolution of the Paleo‐Kuril arc inferred from detrital zircon U–Pb chronology in eastern Hokkaido, NE Asia

et al. 2022

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The Nemuro and Saroma Groups and Yusenkyo Formation occur in eastern Hokkaido and are considered to be forearc or intra‐arc basin sediments of the Paleo‐Kuril arc (PKA) deposited during the Late Cretaceous to middle Eocene. To further clarify the origin of the PKA, we examined the U–Pb ages of detrital zircons within these sandstones and acidic tuff beds; based on our results, we drew the following conclusions. (1) The PKA originated from an oceanic island arc on the oceanic Izanagi Plate around 85 Ma, to which the Nikoro Group greenstone complex was accreted between 81–80 Ma; the Lowest Unit of the Saroma Group covered the surface of the Nikoro accretional greenstone complex. (2) The PKA then first collided with NE Asia around the beginning of the deposition of the Hamanaka Formation (~70 Ma) and transitioned to a continental arc adjacent to NE Asia. This collision generated giant slump beds during deposition of the Akkeshi Formation. During deposition of the Kiritappu Formation, the entire Nemuro Peninsula was uplifted, supplying large volumes of clastic sediments. (3) Although we do not have data directly bearing on why the North American Plate was established in the edge of NE Asia, we speculate that it separated from the Eurasian continent around ~70 Ma when NE Asia first collided with the PKA. Subsequently, the PKA has behaved as part of the North American Plate. The Paleo‐Japan arc (or East Sikhote–Alin arc) and the PKA became joined via the Hidaka Belt. Around 40 Ma, during the deposition of coarse conglomerate beds of the Urahoro Group, the PKA was uplifted and bent clockwise due to a second collision with NE Asia. (4) The modern Kuril arc was established around 36 Ma (late Eocene–early Oligocene), and the Kuril backarc basin opened into the present tectonic setting in the late Oligocene–early Miocene.

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“…The volcanic rocks consist of basalt, andesite, and dacite with both tholeiitic and calc-alkaline chemical affinities (Kiminami, Niida, et al, 1992). Overlying sequences consist of muddy, sandy, and conglomeratic formations, representing turbidite, bottom current, and slump deposits (Kiminami, 1975(Kiminami, , 1983Naruse, 2003;Naruse & Ohtsubo, 2011). Upper Cretaceous sections locally yield megafossils such as ammonoids and inoceramids (Naruse, Maeda, & Shigeta, 2000).…”

Section: Nedamo Terrane (Nd)mentioning

confidence: 99%

The basement geology of Japan from A to Z

et al. 2020

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The Precambrian and lower Paleozoic units of the Japanese basement such as the Hida Oki and South Kitakami terranes have geological affinities with the eastern Asia continent and particularly strong correlation with units of the South China block. There are also indications from units such as the Hitachi metamorphics of the Abukuma terrane and blocks in the Maizuru terrane that some material may have been derived from the North China block. In addition to magmatism, the Japanese region has seen substantial growth due to tectonic accretion. The accreted units dominantly consist of mudstone and sandstone derived from the continental margin with lesser amounts of basaltic rocks associated with siliceous deep ocean sediments and local limestone. Two main phases of accretionary activity and related metamorphism are recorded in the Jurassic Mino-Tanba-Ashio, Chichibu, and North Kitakami terranes and in the Cretaceous to Neogene Shimanto and Sanbagawa terranes. Other accreted material includes ophiolitic sequences, e.g. the Yakuno ophiolite of the Maizuru terrane, the Oeyama ophiolite of the Sangun terrane, and the Hayachine-Miyamori ophiolite of the South Kitakami terrane, and limestone-capped ocean plateaus such as the Akiyoshi terrane. The ophiolitic units are likely derived from arc and back-arc basin settings. There has been no continental collision in Japan, meaning the oceanic subduction record is more complete than in convergent orogens seen in intracontinental settings making this a good place to study the geological record of accretion. Hokkaido lacks most of the Paleozoic history recognized in Honshu, Shikoku, Kyushu, and the Ryukyu Islands to the south and its geology reflects the Cenozoic development of two convergent domains with volcanic arcs, their approach, and eventual collision. The Hidaka terrane reveals a cross section through a volcanic arc and the main accretionary complex of the convergent system is represented by the Sorachi-Yezo terrane.

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Sedimentary history of the late Cretaceous-Paleocene Nemuro Group, Hokkaido, Japan: A forearc basin of the Paleo-Kuril arc-trench system.

Cited by 29 publications

References 29 publications

Tectonic accretion of a subducted intraoceanic remnant arc in Cretaceous Hokkaido, Japan, and implications for evolution of the Pacific northwest

Tectonic accretion of a subducted intraoceanic remnant arc in Cretaceous Hokkaido, Japan, and implications for evolution of the Pacific northwest

Origin and evolution of the Paleo‐Kuril arc inferred from detrital zircon U–Pb chronology in eastern Hokkaido, NE Asia

The basement geology of Japan from A to Z

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