Arctic Ocean deep-sea record of northern Eurasian ice sheet history

Spielhagen, Robert F.; Baumann, Karl-Heinz; Erlenkeuser, Helmut; Nowaczyk, Norbert R; Nørgaard-Pedersen, Niels; Vogt, Christoph; Weiel, Dominik

doi:10.1016/j.quascirev.2003.12.015

Cited by 279 publications

(161 citation statements)

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“…The regional stratigraphic correlation presented by O'Regan et al (2008aO'Regan et al ( , 2008b improved not only the inter-site/hole alignment of the ACEX material, but allowed detailed age-control points developed on PS-2185-6 by Spielhagen et al (2004) and 96/12-1PC by Jakobsson et al (2000Jakobsson et al ( , 2001Jakobsson et al ( , 2003 to be mapped onto the ACEX record, thereby constraining the chronology for the last two glacial cycles. The age models for these two neighboring cores, and particularly the identification of MIS 5 through 6/7 are constrained by multiple lines of evidence that include calcareous nannofossil occurrences and abundances (Jakobsson et al, 2000(Jakobsson et al, , 2001Spielhagen et al, 2004), optically stimulated luminescence dating (Jakobsson et al, 2003), a regional stratigraphic correlation utilizing paleomagnetic, sedimentological and isotopic (d 18 O and 10 Be) data and most recently through amino acid racemization (Kaufman et al, 2008).…”

Section: Stratigraphic Correlation and Cyclostratigraphymentioning

confidence: 96%

“…Download available from http://www.ngdc.noaa.gov/mgg/bathymetry/arctic/downloads.html. Locations and names of cores are shown for ACEX (white), 96/12-1PC (yellow), stratigraphically aligned cores from Spielhagen et al (2004) scale (< 20 mbsf) (Backman et al, 2006) were subsequently reduced by extending the stratigraphic correlation to two proximal cores (PS-2185-6 and 96/12-1PC) (Fig. 1), of shorter length but deposited at lower sedimentation rates (O'Regan et al, 2008a).…”

Section: Core Recoverymentioning

confidence: 99%

“…However, it is important to note that this disparity is not uniform with respect to time or recognized throughout all of the Arctic Ocean. For example, on the Lomonosov Ridge, calcareous nannofossils, and planktic/benthic foraminifera are present in varying quantities, especially within interglacial and interstadial deposits from the last 200 ka (Jakobsson et al, 2001;Backman et al, 2004;Spielhagen et al, 2004). While in other locations including the Morris Jessup Rise , Mendeleev Ridge In the ACEX sedimentary sequence the intermittent occurrences of organic-walled dinoflagellate cysts and one planktic foraminiferal species (N. pachyderma sinistral) have so far provided seven age-control points for the last 14 Ma , two of which occur in the Pleistocene (Fig.…”

Section: Biostratigraphic Controlmentioning

confidence: 99%

“…The age models for these two neighboring cores, and particularly the identification of MIS 5 through 6/7 are constrained by multiple lines of evidence that include calcareous nannofossil occurrences and abundances (Jakobsson et al, 2000(Jakobsson et al, , 2001Spielhagen et al, 2004), optically stimulated luminescence dating (Jakobsson et al, 2003), a regional stratigraphic correlation utilizing paleomagnetic, sedimentological and isotopic (d 18 O and 10 Be) data and most recently through amino acid racemization (Kaufman et al, 2008). When the more constrained chronology for the last 200 ka is compared to the 10 Be/ 9 Be chronology (Fig.…”

Section: Stratigraphic Correlation and Cyclostratigraphymentioning

confidence: 99%

“…Knies et al, 2001;Spielhagen et al, 2004). These insights are critical as detailed reconstructions of pan-Arctic ice-sheets do not extend beyond the last two glacial cycles (Svendsen et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

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Plio-Pleistocene trends in ice rafted debris on the Lomonosov Ridge

O’Regan

John

Moran

et al. 2010

Quaternary International

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a b s t r a c tAlthough more than 700 sediment cores exist from the Arctic Ocean, the Plio-Pleistocene evolution of the basin and its marginal seas remains virtually unknown. This is largely due the shallow penetration of most of these records, and difficulties associated with deriving chronologies for the recovered material. The Integrated Ocean Drilling Program's (IODP) Expedition 302 (Arctic Coring Expedition, ACEX) recovered 197 m of Neogene/Quaternary sediment from the circumpolar regions of the Lomonosov Ridge. As detailed analyses of this material emerge, research is beginning to formulate a long-term picture of paleoceanographic changes in the central Arctic Ocean. This paper reviews the ACEX PlioPleistocene age model, identifies uncertainties, and addresses ways in which these may be eliminated. Within the established stratigraphic framework, a notable reduction in the abundance of ice rafted debris (IRD) occurs in the early part of the Pleistocene and persists until Marine Isotope Stage 6 (MIS 6). Therefore, while global oceanographic proxies indicate the gradual growth of terrestrial ice-sheets during this time, IRD delivery to the central Arctic Ocean remained comparatively low and stable. Within the resolution of existing data, the Pleistocene reduction in IRD is synchronous with predicted changes in both the inflow of North Atlantic and Pacific waters, which in modern times are known to exert a strong influence on sea ice stability.

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Section: Stratigraphic Correlation and Cyclostratigraphymentioning

confidence: 96%

Section: Core Recoverymentioning

confidence: 99%

Section: Biostratigraphic Controlmentioning

confidence: 99%

Section: Stratigraphic Correlation and Cyclostratigraphymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Plio-Pleistocene trends in ice rafted debris on the Lomonosov Ridge

O’Regan

John

Moran

et al. 2010

Quaternary International

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Water mass exchange between the Nordic seas and the Arctic Ocean on millennial timescale during MIS 4–MIS 2

Rasmussen

Thomsen

Nielsen

2014

Geochem Geophys Geosyst

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[1] The climate of the last glaciation circa 65,000-25,000 years ago was interrupted by about 15 abrupt temperature fluctuations, the so-called Dansgaard-Oeschger events consisting of warm interstadials and cold stadials recorded in Greenland ice cores. The largest fluctuations occur in the North Atlantic region, but they have been registered over the most of the world. The events are linked to changes in deep water formation in the Nordic seas and North Atlantic, disrupting the thermohaline circulation. Yet, Dansgaard-Oeschger events have so far not been recorded north of the convection areas in the central Nordic seas, and it is not known if they affected the water exchange between the Nordic seas and the Arctic Ocean. In this study, we analyze core JM05-31GC from the northern Fram Strait at the very entrance to the Arctic Ocean. The core contains sediments from marine isotope stages (MISs) 4-2. The results show millennial timescale shifts in all the investigated proxies including the distribution of planktonic and benthic foraminifera, planktonic and benthic oxygen and carbon isotopes, and several sedimentological parameters. In JM05-31GC, the interstadials are characterized by relatively high surface and low bottom water temperatures, low content of ice-rafted debris, and well-ventilated bottom water. Stadials are characterized by the presence of icebergs and decreasing surface water and increasing bottom water temperatures due to increased inflow of Atlantic subsurface water. Ventilation decreased during Heinrich events and most stadials. The results show that the DansgaardOeschger events strongly affected the water exchange between the Nordic seas and the Arctic Ocean.

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Late Quaternary glaciations in northeastern Russia

Stauch

Gualtieri

2008

J Quaternary Science

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A summary of the extent and chronology of Quaternary glaciations in NE Russia is presented in this paper. The complex timing and style of glaciations include asynchronous development of alpine glaciers in the western and eastern part of the area. While in the eastern part of NE Russia well-preserved moraines have been dated to the global Last Glacial Maximum (18-24 ka), in the westernmost part of the area no glacial advance took place at this time. In general, glacial advances were more extensive earlier rather than later, in the last glacial cycle. Although only a handful of studies with reliable absolute ages in the vast area of NE Russia exist, it is clear that the number of advances throughout the region varies. Variable glacial response to global climate patterns is attributable to contrasting sources of precipitation. An Atlantic moisture source dominates in the western part of NE Russia, while a Pacific source influences the eastern part of the region. The glacial advances in the interior of NE Russia are largely unexplored and further research is needed in order to understand Quaternary climate change in the region.

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Arctic Ocean deep-sea record of northern Eurasian ice sheet history

Cited by 279 publications

References 134 publications

Plio-Pleistocene trends in ice rafted debris on the Lomonosov Ridge

Plio-Pleistocene trends in ice rafted debris on the Lomonosov Ridge

Water mass exchange between the Nordic seas and the Arctic Ocean on millennial timescale during MIS 4–MIS 2

Late Quaternary glaciations in northeastern Russia

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