Evidence for Congo River freshwater load in Late Quaternary sediments of ODP Site 1077 (5°S, 10°E)

AbstractFive widespread tephra layers are found in late Quaternary sediments (0–130,000 yr B.P.) of the Eastern Mediterranean Sea. These layers have been correlated among abyssal cores and to their respective terrestrial sources by electron-probe microanalysis of glass and pumice shards. Major element variations are sufficient to discriminate unambiguously between the five major layers. Oxygen isotope stratigraphy in one of the cores studied was used to data four of the five layers. Two of the widespread layers are derived from explosive eruptions of the Santorini volcanic complex: the Minoan Ash (3370 yr B.P.) and the Acrotiri Ignimbrite (18,000 yr B.P.). An additional layer, found in one core only, is most likely correlated to the Middle Pumice Series of Santorini (approximately 100,000 yr B.P.). Two layers are correlated to deposits on the islands of Yali and Kos and date to 31,000 and 120,000 yr B.P., respectively. One layer originated from the Neapolitan area of Italy 38,000 yr B.P.

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Multiple ash layers in late Quaternary sediments from the Central Indian Basin

Journal of Volcanology and Geothermal Research ◽

10.1016/j.jvolgeores.2016.03.011 ◽

2016 ◽

Vol 316 ◽

pp. 85-100 ◽

Cited By ~ 6

Author(s):

M.B.L. Mascarenhas-Pereira ◽

B. Nagender Nath ◽

S.D. Iyer ◽

D.V. Borole ◽

G. Parthiban ◽

...

Keyword(s):

Late Quaternary ◽

Quaternary Sediments ◽

Central Indian Basin

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New temporal, and genetic determinations of some late Quaternary sediments in the Bovec Basin and its surroundings (NW Slovenia)

Geologija ◽

10.5474/geologija.2002.022 ◽

2002 ◽

Vol 45 (2) ◽

pp. 291-298 ◽

Cited By ~ 4

Author(s):

Miloš bavec

Keyword(s):

Late Quaternary ◽

Quaternary Sediments

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U-series dating on late Quaternary sediments from Balikun Lake

Chinese Science Bulletin ◽

10.1007/bf02884120 ◽

1998 ◽

Vol 43 (17) ◽

pp. 1434-1441 ◽

Cited By ~ 2

Author(s):

Jiaqi Liu ◽

Zhibang Ma

Keyword(s):

Late Quaternary ◽

Quaternary Sediments

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Integrated Rock Magnetic and Geochemical Quantification of Redoxomorphic Iron Mineral Diagenesis in Late Quaternary Sediments from the Equatorial Atlantic

The South Atlantic in the Late Quaternary ◽

10.1007/978-3-642-18917-3_12 ◽

2003 ◽

pp. 237-260 ◽

Cited By ~ 6

Author(s):

J. A. Funk ◽

T. von Dobeneck ◽

A. Reitz

Keyword(s):

Late Quaternary ◽

Equatorial Atlantic ◽

Quaternary Sediments ◽

Iron Mineral

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Magnetic and microfaunal characterization of late Quaternary sediments from the westernMediterranean: inferences about sapropel formation and paleoceanographic implications

10.2973/odp.proc.sr.161.243.1999 ◽

1999 ◽

Cited By ~ 10

Author(s):

L. Capotondi ◽

L. Vigliotti

Keyword(s):

Late Quaternary ◽

Quaternary Sediments

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The Distal and Local Volcanic Ash in the Late Pleistocene Sediments of the Termination I Interval at the Reykjanes Ridge, North Atlantic, Based on the Study of the Core AMK-340

Geosciences ◽

10.3390/geosciences9090379 ◽

2019 ◽

Vol 9 (9) ◽

pp. 379

Author(s):

Matul ◽

Gablina ◽

Khusid ◽

Libina ◽

Mikhailova

Keyword(s):

North Atlantic ◽

Volcanic Ash ◽

Late Quaternary ◽

Central Zone ◽

Younger Dryas ◽

Quaternary Sediments ◽

Reykjanes Ridge ◽

Volcanic Material ◽

The North ◽

Russian Research

We made the geochemical analysis of the volcanic material from the sediment core AMK-340 (the Russian research vessel “Akademik Mstislav Keldysh” station 340), the central zone of the Reykjanes Ridge. Two ash-bearing sediment units within the interval of the Termination I can be detected. They correlate with the Ash Zone I in the North Atlantic Late Quaternary sediments having an age of 12,170–12,840 years within the Younger Dryas cold chronozone and 13,600–14,540 years within the Bølling–Allerød warm chronozone. The ash of the Younger Dryas unit is presented mostly by the mafic and persilicic material originated from the Icelandic volcanoes. One sediment sample from this unit contained Vedde Ash material. The ash of the Bølling–Allerød unit is presented mostly by the mafic shards which are related to the basalts of the rift zone on the Reykjanes Ridge, having presumably local origin. Possible detection of Vedde Ash could help to specify the timing of the previously reconstructed paleoceanographic changes for the Termination I in the point of the study: significant warming in the area might have occurred as early as 300 years before the end of the conventional Younger Dryas cold chronozone.

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