Significance of the remarkable unconformity in the Plio–Pleistocene of the Japanese Islands

Tamura, Itoko; Yamazaki, Haruo

doi:10.1016/j.quaint.2010.01.013

Cited by 14 publications

(11 citation statements)

References 20 publications

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“…The Bando‐1 (Ise), Nishihirao (Kakegawa), and KH (Boso) Tephra Beds are described as the Obr‐Bando1 Tephra (Tamura & Yamazaki 2010), which is in the lower part of the Matuyama Chronozone (C2r2r: Nakayama & Yoshikawa 1990). The biohorizon of coiling change in the genus Pulleniatina occurs around this tephra (Oda 1977).…”

Section: Tephra Descriptionmentioning

confidence: 99%

“…The OK III (Nagaoka) and SR (Boso) Tephra Beds are described as the OM1‐OK3 Tephra, which correlates with the OM1 Tephra in the north of the Chubu Mountains (Tamura & Yamazaki 2010). This tephra is near the Reunion Subchronozone (C2r1n: Niitsuma 1976), and the biohorizon of coiling change in the genus Pulleniatina (Oda 1977).…”

Section: Tephra Descriptionmentioning

confidence: 99%

“…(2005); g Suzuki and Nakayama (2007); h Suzuki and Murata (2011); i Tamura et al . (2008); j Tamura and Yamazaki 2010); k Redefinition of Tamura et al . (2008).…”

Section: Standard Tephrostratigraphy Of the Plio–pleistocene In Japanmentioning

confidence: 99%

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Tephrostratigraphy of the Pliocene to Middle Pleistocene Series in Honshu and Kyushu Islands, Japan

Satoguchi

Nagahashi

2012

Island Arc

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The Pliocene to Pleistocene Series in each sedimentary basin or area of Japan has been investigated and described; however, their stratigraphic correlation is difficult because of complex geological structures. Regional stratigraphy has therefore been established using many intercalated tephra beds, i.e. by correlating tephra beds between distant areas. A standardized stratigraphic model of the Pliocene to Middle Pleistocene Series in Japan is put forward in this paper on the basis of tephrostratigraphy, magnetostratigraphy, and biostratigraphy. This stratigraphic model is important for studies of environmental changes and explosive volcanism in this period around the Japanese island‐arc.

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Section: Tephra Descriptionmentioning

confidence: 99%

Section: Tephra Descriptionmentioning

confidence: 99%

See 1 more Smart Citation

Tephrostratigraphy of the Pliocene to Middle Pleistocene Series in Honshu and Kyushu Islands, Japan

Satoguchi

Nagahashi

2012

Island Arc

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“…Finally, to the north of the Equator in central Japan (35°N) there is an extensive Pliocene–Pleistocene unconformity, but in this case the dating has been constrained using tephrochronology, microfossils, palaeomagnetism, sequence stratigraphy and oxygen isotope ratios (Tamura and Yamazaki, 2010). The process(es) of formation of the Kurotaki unconformity and corresponding unconformities in the Kinki, Tokai, Kanto and Chubu regions of central Japan, however, are not well understood.…”

Section: Other Locations (See Fig 1 For Locations)mentioning

confidence: 99%

“…The process(es) of formation of the Kurotaki unconformity and corresponding unconformities in the Kinki, Tokai, Kanto and Chubu regions of central Japan, however, are not well understood. The bounding strata accumulated in deep marine environments, and although it is normally assumed that unconformities are formed as a result of uplift or emergence, none of these strata appear to be associated with sea‐level change (Tamura and Yamazaki, 2010). The timing of these unconformities across central Japan is bracketed by a range of ages for the underlying (2.7–4.15 Ma) and overlying (1.78–2.9 Ma) strata.…”

Section: Other Locations (See Fig 1 For Locations)mentioning

confidence: 99%

The Eltanin asteroid impact: possible South Pacific palaeomegatsunami footprint and potential implications for the Pliocene–Pleistocene transition

Goff

Chagué‐Goff

Archer

et al. 2012

J Quaternary Science

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Large asteroid impacts are rare, and those into the deep ocean are rarer still. The Eltanin asteroid impact around 2.51 ± 0.07 Ma occurred at a time of great climatic and geological change associated with the Pliocene–Pleistocene boundary. Numerical models of the event indicate that a megatsunami was generated, although there is debate concerning its magnitude and the region‐wide extent of its influence. We summarise the existing evidence for possible Eltanin megatsunami deposits in Antarctica, Chile and New Zealand, while also examining other potential sites from several locations, mainly around the South Pacific region. In reviewing these data we note that these events were unfolding at the same time as those associated with the Pliocene–Pleistocene boundary and, as such, most of the geological evidence from that time has a climatic interpretation. The potential climatic and geological ramifications of the Eltanin asteroid impact, however, have failed to be considered by most researchers studying this time period. Although we are not advocating that all geological activity at that time is connected with the Eltanin asteroid impact, it raises interesting questions about the role potentially played by such catastrophic events in contributing to or even triggering epochal transitions. Copyright © 2012 John Wiley & Sons, Ltd.

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Contemporaneous closure of the Paleo-Asian Ocean in the Middle-Late Triassic: A synthesis of new evidence and tectonic implications for the final assembly of Pangea

Song,

Xiao,

et al. 2024

Earth-Science Reviews

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Significance of the remarkable unconformity in the Plio–Pleistocene of the Japanese Islands

Cited by 14 publications

References 20 publications

Tephrostratigraphy of the Pliocene to Middle Pleistocene Series in Honshu and Kyushu Islands, Japan

Tephrostratigraphy of the Pliocene to Middle Pleistocene Series in Honshu and Kyushu Islands, Japan

The Eltanin asteroid impact: possible South Pacific palaeomegatsunami footprint and potential implications for the Pliocene–Pleistocene transition

Contemporaneous closure of the Paleo-Asian Ocean in the Middle-Late Triassic: A synthesis of new evidence and tectonic implications for the final assembly of Pangea

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