Geological age and correlation of the Pleistocene Atsumi Group in Atsumi Peninsula, Aichi Prefecture, Japan.

Shimamoto, Masanori; Higashino, Hirofumi; Suzuki, Hideaki; Shimokawa, Kuniyasu; Tanaka, Yuichiro

doi:10.5575/geosoc.100.618

Cited by 4 publications

(1 citation statement)

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“…The first and last appearances in four groups of planktic microfossils, foraminifera, calcareous nannofossils, radiolaria, and diatoms, have been compared with the geomagnetic polarity records. Regional sequences have been established within the geographic limitations for extending the isochronous surfaces represented by the biologic events (Shimamoto et al, 1994;Kitamura, 1995Kitamura, , 1997aKotake et al, 1995;Okubo et al, 1995;Oishi et al, 1996;Sugawara et al, 1997;Kameo, 1998). Takayama et al (1995) recognized 13 calcareous nannofossil datums in the Pleistocene sediments from the North Atlantic, Indian and equatorial Pacific Ocean, and also Japanese Islands.…”

Section: Biostratigraphymentioning

confidence: 99%

A Study of Quaternary Paleoenvironments and Paleobiology in Japan.

Koizumi

1999

Daiyonki-kenkyu

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This article presents that our investigations based on Paleobiology have good progress in understanding how environmental conditions changed and fluctuated during Quaternary, of fossils themselves as well, for these ten years. Major results are as follows: (1) Sedimentary facies and molluscan fossil contents of Quaternary sediments were originated from glacio-eustacy with the period of orbital precession and/or obliquity by the Milankovitch cycles. (2) Four stages in warm molluscan and diatom assemblages were recognized during the Holocene in Hokkaido. They can be correlated with the periods of strong northward inflow of the warm Tsushima were recognized at the Hyperthermal and Last Interglacial age. (4) Tsunami deposits, which consist of sand and sandy gravel with mixed environmental molluscan shells and wood fragments, generated by earthquakes were found along the Boso and Miura peninsulas. (5) A cold-seep chemosynthetic community, which is composed of the articulated bivalves Conchocela bisecta and Lucinoma spectabilis, were found in the lower Pleistocene Koshiba Formation, Yokohama City. (6) Living fossils were observed in seafloor caves, in deep water, or in singular area around spouting thermal spring on the ocean floor.

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Section: Biostratigraphymentioning

confidence: 99%

A Study of Quaternary Paleoenvironments and Paleobiology in Japan.

Koizumi

1999

Daiyonki-kenkyu

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The development of Fe-nodules surrounding biological material mediated by microorganisms

et al. 2007

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Upogebia deltaura (Crustacea: Thalassinidea) in Clyde Sea maerl beds, Scotland

Hall-Spencer

Atkinson

1999

J. Mar. Biol. Ass.

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Burrows inhabited by Upogebia deltaura (Crustacea: Thalassinidea) were studied over a two-year period on two maerl beds at 10 m below Chart Datum (CD) in the Clyde Sea area, Scotland. Labelled burrows proved to be stable features on each ground, with animals able to withstand the impacts of scallop dredging and storm disturbance by re-building the damaged upper sections of their burrows. Resin casts excavated using an air-lift showed that these burrows were inhabited by single individuals. Burrows were deeper, larger and more complicated than was previously thought typical for U. deltaura and other members of the genus. Mapping of burrow systems revealed average densities of 2.9 ind m−2 with up to ten openings m−2. These elusive animals were the deepest burrowing megafauna (to 68 cm) and the most abundant large crustaceans within the maerl bed habitat.

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Geological age and correlation of the Pleistocene Atsumi Group in Atsumi Peninsula, Aichi Prefecture, Japan.

Cited by 4 publications

References 0 publications

A Study of Quaternary Paleoenvironments and Paleobiology in Japan.

A Study of Quaternary Paleoenvironments and Paleobiology in Japan.

The development of Fe-nodules surrounding biological material mediated by microorganisms

Upogebia deltaura (Crustacea: Thalassinidea) in Clyde Sea maerl beds, Scotland

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