Widespread tephra layers in the Bering Sea sediments: distal clues to large explosive eruptions from the Aleutian volcanic arc

Derkachev, A. N.; Пономарева, В. В.; Portnyagin, Maxim; Gorbarenko, Sergey A; Nikolaeva, N. A.; Malakhov, Mikhail I; Zelenin, Egor; Nürnberg, Dirk; Liu, Yanguang

doi:10.1007/s00445-018-1254-9

Cited by 8 publications

(27 citation statements)

References 79 publications

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“…a). Comparison of WP1 tephra to other tephras from the NW Pacific marine cores described and analyzed during the last decade (Ponomareva et al ., ; Derkachev et al ., ; M. V. Portnyagin et al, unpublished data) has allowed us to identify this tephra in several more NW Pacific cores: LV63‐3, LV63‐8, LV63‐38, LV63‐40 and LV76‐25 (Fig. ).…”

Section: Resultsmentioning

confidence: 97%

“…However, as most of the SO201‐2‐40 tephras have pre‐Holocene ages and tephra sequences of this age are rare, we were able to preliminarily identify the source volcanoes for only eight tephra layers under study (WP1, WP4, WP5, WP6, WP9, WP11, WP14 and WPL2). For this identification, we used our extensive database of the Kamchatka proximal tephra compositions and earlier published data (Kyle et al ., ; Ponomareva et al ., ,b, , ; Derkachev et al ., ; Portnyagin et al ., ). To support our correlations, we are provide our unpublished geochemical data for proximal material for the Gorely, Opala and Karymsky volcanic centers (Supporting Information Tables S5 and S6).…”

Section: Identification Of Tephra Sourcesmentioning

confidence: 99%

“…In recent years, a number of papers have considered selected tephra layers found in marine cores around Kamchatka (e.g. Ponomareva et al ., ,, ; Derkachev et al ., , ), although only one attempt has been made to geochemically analyze a long and continuous tephra sequence to the east of Kamchatka, downwind from its volcanic arc (Cao et al ., ). The latter authors geochemically characterized many tephras from four cores of the Ocean Drilling Program (ODP) Leg 145 Sites 881–884, located in the NW Pacific ~700 km downwind from the Kamchatka volcanoes.…”

Section: Introductionmentioning

confidence: 99%

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Middle to late Pleistocene record of explosive volcanic eruptions in marine sediments offshore Kamchatka (Meiji Rise, NW Pacific)

Derkachev

Gorbarenko

Пономарева

et al. 2019

J Quaternary Science

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This paper presents the first detailed study of a late Pleistocene marine tephra sequence from the NW Pacific, downwind from the Kamchatka volcanic arc. Sediment core SO201-2-40, located on the Meiji Rise~400 km offshore the peninsula, includes 25 tephras deposited within the last 215 ka. Volcanic glass from the tephras was characterized using single-shard electron microprobe analysis and laser ablation inductively coupled mass spectrometry. The age of tephras was derived from a new age model based on paleomagnetic and paleoclimate studies. Geochemical correlation of distal tephras to Kamchatkan pyroclastic deposits allowed the identification of tephras from the Karymsky, Gorely, Opala and Shiveluch eruptive centers. Three of these tephras were also correlated to other marine and terrestrial sites and hence are identified as the best markers for the north-west Pacific region. These are an early Holocene tephra from the Karymsky caldera (~8.7 ka) and two tephras falling into the Marine Isotope Stage (MIS) 6 glacial time: an MIS 6.4 tephra from Shiveluch (~141 ka) and the MIS 6.5 Rauchua tephra (~175 ka) from Karymsky. The data presented in this study can be used in paleovolcanological and paleoceanographic reconstructions. recovered from core SO201-2-40 on the Meiji Rise (NW Pacific) (Fig. 1). The record includes 25 tephra layers and lenses deposited during the last~215 ka. We present an age model for the core based on paleomagnetic and stratigraphic

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Section: Resultsmentioning

confidence: 97%

Section: Identification Of Tephra Sourcesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Middle to late Pleistocene record of explosive volcanic eruptions in marine sediments offshore Kamchatka (Meiji Rise, NW Pacific)

Derkachev

Gorbarenko

Пономарева

et al. 2019

J Quaternary Science

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“…The strongly disturbed tephra layer is 8 cm thick (47-55 cm) in Core 85KL. However, the thickness of the same ash layer in the nearby cores does not exceed 4 cm (Derkachev et al, 2018). This thickness is also lower than the depth resolution of the proxy data used in this study.…”

Section: Core Locations and Stratigraphymentioning

confidence: 57%

“…Linear interpolation was used to calculate ages between calibrated radiocarbon dates. Two visible tephra layers were found at 116-117 and 145 cm in the upper part of Core 77KL, whereas one dark tephra layer is reported from the 47-55 cm interval in Core 85KL (Dullo et al, 2009;Ponomareva et al, 2013;Derkachev et al, 2018). It is strongly disturbed by coring and reaches down to 67 cm (Dullo et al, 2009).…”

Section: Core Locations and Stratigraphymentioning

confidence: 99%

Intermediate- and Deep-Water Oxygenation History in the Subarctic North Pacific During the Last Deglacial Period

et al. 2021

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Deglacial dissolved oxygen concentrations were semiquantitatively estimated for intermediate and deep waters in the western Bering Sea using the benthic foraminiferal-based transfer function developed by Tetard et al. (2017), Tetard et al. (2021a). Benthic foraminiferal assemblages were analyzed from two sediment cores, SO201-2-85KL (963 m below sea level (mbsl), the intermediate-water core) and SO201-2-77KL (2,163 mbsl, the deep-water core), collected from the Shirshov Ridge in the western Bering Sea. Intermediate waters were characterized by an oxygen content of ∼2.0 ml L−1 or more during the Last Glacial Maximum (LGM)–Heinrich 1 (H1), around 0.15 ml L−1 during the middle Bølling/Allerød (B/A)–Early Holocene (EH), and a slight increase in [O2] (∼0.20 ml L−1) at the beginning of the Younger Dryas (YD) mbsl. Deep-water oxygen concentrations ranged from 0.9 to 2.5 ml L−1 during the LGM–H1, hovered around 0.08 ml L−1 at the onset of B/A, and were within the 0.30–0.85 ml L−1 range from the middle B/A to the first half of YD and the 1.0–1.7 ml L−1 range from the middle to late Holocene. The [O2] variations remind the δ18O NGRIP record thereby providing evidence for a link between the Bering Sea oxygenation at intermediate depths and the deglacial North Atlantic climate. Changes in the deep-water oxygen concentrations mostly resemble the deglacial dynamics of the Southern Ocean upwelling intensity which is supposed to be closely coupled with the Antarctic climate variability. This coherence suggests that deglacial deep-water [O2] variations were primarily controlled by changes in the circulation of southern-sourced waters. Nevertheless, the signal from the south at the deeper site might be amplified by the Northern Hemisphere climate warming via an increase in sea-surface bioproductivity during the B/A and EH. A semi-enclosed position of the Bering Sea and sea-level oscillations might significantly contribute to the magnitude of oxygenation changes in the study area during the last deglaciation. Interregional correlation of different proxy data from a wide range of water depths indicates that deglacial oxygenation changes were more pronounced in the Bering and Okhotsk marginal seas than along the open-ocean continental margin and abyssal settings of the North Pacific.

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The Pauzhetka tephra (South Kamchatka): A key middle Pleistocene isochron for the Northwest Pacific and Okhotsk Sea sediments

Bubenshchikova,

Ponomareva,

Portnyagin

et al. 2024

Quaternary Geochronology

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Widespread tephra layers in the Bering Sea sediments: distal clues to large explosive eruptions from the Aleutian volcanic arc

Cited by 8 publications

References 79 publications

Middle to late Pleistocene record of explosive volcanic eruptions in marine sediments offshore Kamchatka (Meiji Rise, NW Pacific)

Middle to late Pleistocene record of explosive volcanic eruptions in marine sediments offshore Kamchatka (Meiji Rise, NW Pacific)

Intermediate- and Deep-Water Oxygenation History in the Subarctic North Pacific During the Last Deglacial Period

The Pauzhetka tephra (South Kamchatka): A key middle Pleistocene isochron for the Northwest Pacific and Okhotsk Sea sediments

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