Evidence map›Paper›PMID 38505380›Full record

ArticleJournal of quaternary science2023

Foraminifera assemblages from Fantangisña serpentinite mud seamount in the NW Pacific Ocean during the Pleistocene (IODP Expedition 366).

Arianna V Del Gaudio, Werner E Piller, Gerald Auer, Walter Kurz

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Article in Journal of quaternary science, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

4 authors.

Arianna V Del GaudioInstitute for Earth Sciences, NAWI Graz Geocenter University of Graz Heinrichstrasse 26 Graz 8010 Austria.ORCID 0000-0002-1858-410X
Werner E PillerInstitute for Earth Sciences, NAWI Graz Geocenter University of Graz Heinrichstrasse 26 Graz 8010 Austria.
Gerald AuerInstitute for Earth Sciences, NAWI Graz Geocenter University of Graz Heinrichstrasse 26 Graz 8010 Austria.
Walter KurzInstitute for Earth Sciences, NAWI Graz Geocenter University of Graz Heinrichstrasse 26 Graz 8010 Austria.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The Mariana forearc system, in the northwestern Pacific, is known as the only convergent margin setting with currently active serpentine mud volcanism. The Fantangisña serpentinite mud volcano lies 62 km west of the Mariana trench, within the influence of the North Equatorial Current (NEC). Cores recovered by International Ocean Discovery Program (IODP) Expedition 366 contain pelagic sediments overlying layered serpentinite mud deposits. At the bottom of the sequence, nannofossil-rich forearc deposits were recovered from under the seamount edifice. In this study, we investigated 47 samples from Site U1498A on the southern flank of the seamount for benthic and planktonic foraminifera assemblages. Statistical analyses on planktonic assemblages differentiated two sample groups related to the ratio between thermocline/mixed layer taxa, which indicate fluctuations in the depth of the thermocline (DOT) during the Pleistocene. Variations in the DOT reflect changes in the intensity of the NEC associated with El Niño/La Niña conditions. Mudflows do not influence the ecology of planktonic foraminifera but possibly enhance their preservation against dissolution, which was instead detected in the pelagic deposit as suggested by common

Indexed as

benthic foraminiferaNorth Equatorial Currentplanktonic foraminiferaPleistoceneserpentinite mud volcanism

Identifiers

PMID38505380
PMCPMC10947277

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