Paleotemperature, geochemical and grain size data in Quaternary sediments from the Gloria Drift (Northwest Atlantic)

Bashirova, L. D.; Dorokhova, Evgenia; Sivkov, Vadim; Novichkova, E. A.

doi:10.1016/j.dib.2018.05.105

Cited by 1 publication

(6 citation statements)

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“…In the case of the more northernly core from the Snorri Drift, IRD varied from 258 to 5386 lithic grains/g; in the case of the more southernly core from the Gloria Drift, IRD varied from 0 to 2567 lithic grains/g. [15,20,34,37]. The IRD counts in the northern part (above 55 • N) of North Atlantic vary from 6.2 to 4446 lithic grains/g (SU90-24 core, [37]), while in the more southernly area (between 50 and 40 • N), the IRD counts vary from <10 to 2212 (AI3646 core, [20]).…”

Section: Sediment Cores and Regional Hydrographymentioning

confidence: 99%

“…[15,20,34,37]. The IRD counts in the northern part (above 55 • N) of North Atlantic vary from 6.2 to 4446 lithic grains/g (SU90-24 core, [37]), while in the more southernly area (between 50 and 40 • N), the IRD counts vary from <10 to 2212 (AI3646 core, [20]). Therefore, these data generally correspond to the earlier publications [15,20,34,37] and reflect an increase of the IRD abundance northward, i.e.…”

Section: Sediment Cores and Regional Hydrographymentioning

confidence: 99%

“…Stratigraphic subdivision of the AI-3378 and AMK-4493 cores was performed using data on the calcium carbonate, stable oxygen isotope (δ 18 O), and IRD records [20,34]. For details, see Table S1 in Supplementary Materials.…”

Section: Stable Oxygen Isotope Ird Toc and Sio 2am Analysismentioning

confidence: 99%

“…Contents of chemical elements (average value for each sample) in sediment cores at the Snorri (AI-3378, n = 46) and Gloria (AMK-4493, n = 37) Drifts are listed in Tables 1 and 2 respectively. Notation: * data from [20].…”

Section: Chemical Elementsmentioning

confidence: 99%

“…In the North Atlantic, based on the modes of measured grain size distributions at the Gloria Drift, two sources of the lithogenic ice-rafted debris (IRD) have been identified: ice rafting and the Northwest Atlantic Mid-Ocean Channel [15,20].…”

Section: Introductionmentioning

confidence: 99%

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Geochemical Signatures of Paleoclimate Changes in the Sediment Cores from the Gloria and Snorri Drifts (Northwest Atlantic) over the Holocene-Mid Pleistocene

et al. 2019

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A multiproxy study of the sediment cores taken from the Snorri Drift, formed under the influence of the Iceland–Scotland bottom contour current, and from the Gloria Drift, located southward Greenland at the boundary of Irminger and Labrador Seas, was performed. This area undergoes a variable mixing of polar waters with the warm North Atlantic current, whose intensity and direction seemed to change dramatically with the alteration of warming and cooling periods during the six marine isotope stages MIS 1-6. The relative age of this core does not exceed 190,000 cal yr BP; the average sedimentation rate was 1.94 and 2.45 cm/kyr in the Gloria and Snorri Drifts core respectively. In both the cores, the sediment records showed the downcore co-variation of ice-rafted debris (IRD); and terrigenous elements, such as Si, Al, Ti, Cr, and Zr, were revealed; their values were clearly higher in the glacial periods (MIS 2, 4, and 6) compared to interglacials (MIS 1, 3, and 5). The downcore rhythmic distributions of these elements, as well as Al/Si, Ti/Al, Fe/Al ratios exhibit an opposite trend with that of δ18O values, biogenic components (CaCO3, BioSiO2), and Si/Fe and Mn/Fe ratios.

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