Tephrochronological study of the layers including the Early. Paleolithic artifacts in the northern part of Sendai plain, Japan.

Soda, Tsutomu

doi:10.4116/jaqua.28.269

Cited by 10 publications

(10 citation statements)

References 4 publications

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“…3). Over ten tephra layers are observed in the study area (Okami and Yoshida, 1984;Soda, 1989;Watanabe, 1989Watanabe, , 1991. Tephra layers containing pumice and coarse ash are derived from nearby volcanoes, such as the Yakeishi volcano and the Onikobe caldera (Okami and Yoshida, 1984;Machida and Arai, 2003: Fig.…”

Section: Regional Setting Of the Isawa Uplandmentioning

confidence: 96%

Late Quaternary uplift rate of the northeastern Japan arc inferred from fluvial terraces

2008

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Section: Regional Setting Of the Isawa Uplandmentioning

confidence: 96%

Late Quaternary uplift rate of the northeastern Japan arc inferred from fluvial terraces

2008

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“…Human occupation of Japan apparently commenced prior to 100 000 years BP (Kamada, Hajiwara & Yamada, 1989;Soda, 1989), preceding the extinction of a series of large herbivores at the end of the last glacial. Horses Equus sp., bison Bisonpriscus and elephants Palaeoloxodon ( = Elephas) naumanni Makiyama, among others, died out in Hondo between 20 000 and 10 000 years BP, whilst in Hokkaido tundra species such as Woolly Mammoth Mammuthusprimigenius Blumenbach were lost around the same time (Kawamura, 1991).…”

Section: H U M a N Influencesmentioning

confidence: 99%

Patterns of distribution in Japanese land mammals

Dobson

1994

Mammal Review

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Distribution patterns among the terrestrial mammal species of Sakhalin and the main islands of Japan are shown to fall into 12 clear groups. The most fundamental distributional break (Blakiston's Line) is that separating Hokkaido and Sakhalin to the north, with their boreal fauna typical of northern Eurasia, from ‘Hondo’ (Honshu, Shikoku, Kyushu) to the south, which demonstrates a high degree of endemism and supports a small number of Indo‐Malayan elements. Distribution patterns may be explained by considering the Quaternary geohistory of the area, particularly the formation of land bridges and the changes in climatic conditions during this period. A dynamic classification based upon origin of the fauna recognizes seven categories, although on evidence currently available the allocation of some species to categories is not yet possible. Hondo underwent two main periods of land bridge connection to the Asiatic mainland. The first, prior to the Pleistocene, allowed immigration of forms which have since developed into distinctive elements of the endemic fauna (‘Old Hondo Endemics’). The second, during the Middle Pleistocene, brought in widespread Palaearctic species as well as components from South‐East Asia (‘Early Colonists’), some of which have since undergone vicariant speciation (‘New Hondo Endemics’); it also allowed several of the Old Hondo Endemics to extend their range to the mainland and Hokkaido (‘Expanding Hondo Endemics’). Sakhalin and Hokkaido have been more intimately connected to the mainland (most recently until less than 10 000 years ago), such that endemism is very restricted. Species groups here are the ‘Late Colonists’, cold‐adapted tundra species which expanded with the glacial advances, but which are now restricted in distribution, and ‘Recent Colonists’, postglacial forest species which recolonized before the severance of land bridges. Moving the other way were ‘Expanding Northern Endemics’, which arose in Hokkaido or Sakhalin during the last glacial and colonized the adjacent mainland before severance of land links. There are, additionally, several possible Expanding Hondo Endemics in Hokkaido, although human intervention in determining their current distributions cannot be ruled out. Bats, to which the sea barriers of the Japanese area are less complete, exhibit somewhat different patterns of distribution, confirming predictions about the role of even narrow marine straits in restricting ranges of nonflying mammals.

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“…2) as central and southern NE Japan, respectively. Some volcanoes (calderas) that erupted during the late Pleistocene provided cummingtonite-bearing tephras to the forearc: namely, the Dokusawa tephra (Dks), from the Hijiori volcano or another volcano in its vicinity, MIS 5.2-5.3 (Matsu'ura et al, 2002); the Naruko-Nisaka tephra (N-N), from the Naruko caldera, MIS 5.2-5.3 (Soda, 1989;Matsu'ura et al, 2009); the Adachi-Medeshima tephra (Ac-Md), from the Adachi volcano, older than MIS 5.2 (Yagi and Soda, 1989); the Numazawa-Shibahara tephra (Nm-SB) from the Numazawa caldera, 110 ka or MIS 5.4-5.3 (Suzuki et al, 2004); and the Numazawa-Kanayama tephra (Nm-KN) from the Numazawa caldera, 50-55 ka (Suzuki and Soda, 1994). No cummingtonite-bearing tephras were observed stratigraphically above the Aso-4 tephra (MIS 5.2) in marine cores KH-94-3 and LM-8, obtained offshore of Kesennuma (Aoki and Arai, 2000;Aoki, 2008; Fig.…”

Section: Methodsmentioning

confidence: 99%

“…The Ichihasama tephra (IcP) (Soda, 1989) may have erupted from the Naruko volcano or another volcano in its vicinity in central NE Japan (Machida and Arai, 2003). The eruptive age of IcP is greater than MIS 5.4 because it is stratigraphically below the Toya tephra (Toya, MIS 5.4: Soda, 1989;Machida and Arai, 2003). IcP is below Dks at loc.…”

Section: Cummingtonite-bearing Tephras Potentially At Kesennuma As Inmentioning

confidence: 99%

Late Quaternary cryptotephra detection and correlation in loess in northeastern Japan using cummingtonite geochemistry

2011

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We detected late Pleistocene cummingtonite-bearing cryptotephras in loess deposits in NE Japan and correlated them with known tephras elsewhere by using major-element compositions of the cummingtonite. This is the first time cryptotephras have been identified by analysis of a crystal phase rather than glass shards. In central NE Japan, four cummingtonite-bearing tephras, the Ichihasama pumice, the Dokusawa tephra, the Naruko–Nisaka tephra, and the Adachi–Medeshima tephra, are present in late Pleistocene loess deposits. Because the cummingtonite chemistry of each tephra is different and characteristic, it is potentially a powerful tool for detecting and identifying cryptotephras. An unidentified cummingtonite-bearing cryptotephra previously reported to be present in the late Pleistocene loess deposits at Kesennuma (Pacific coast) did not correlate with any of the known cummingtonite-bearing tephras in central NE Japan, but instead with the Numazawa–Kanayama tephra (erupted from the Numazawa caldera, southern NE Japan), although Kesennuma is well beyond the previously reported area of the distribution of the Numazawa–Kanayama tephra. Three new cummingtonite-bearing cryptotephras in the mid and late Pleistocene loess deposits (estimated to be less than 82 ka, 100–200 ka, and ca. 250 ka) on the Isawa upland were also detected.

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Tephrochronological study of the layers including the Early. Paleolithic artifacts in the northern part of Sendai plain, Japan.

Cited by 10 publications

References 4 publications

Late Quaternary uplift rate of the northeastern Japan arc inferred from fluvial terraces

Late Quaternary uplift rate of the northeastern Japan arc inferred from fluvial terraces

Patterns of distribution in Japanese land mammals

Late Quaternary cryptotephra detection and correlation in loess in northeastern Japan using cummingtonite geochemistry

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