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Sortable silt data from core MD03-2673 (2023)

Stevenard, Nathan ; Govin, Aline ; Kissel, Catherine ; [et al.]

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Publication Date: 2023-06-27

Description: Sortable silt data was obtained from core MD03-2673 located in the North Atlantic. The sediment was analysed with a laser diffractometer at Bio-Indicateurs Actuels et Fossiles (BIAF) lab, in order to provide informations on past changes in intensity of the Iceland-Scotland Overflow Water (ISOW) over the Marine Isotopic Stages 7 and 9. The original sortable silt data (percent and mean) were used for comparison with the new method of correcting for ice-rafted debris (IRD) influence on sortable silt described in Stevenard et al. (submitted).

Keywords: CALYPSO; Calypso Corer; DEPTH, sediment/rock; Gardar Drift; Grain size, Mastersizer 3000, Malvern Instrument Inc.; IMAGES XI - P.I.C.A.S.S.O.; Marion Dufresne (1995); MD032673; MD03-2673; MD132; Size fraction 0.063-0.010 mm, sortable silt; sortable silt; Sortable-silt mean; Zr/Rb

Type: Dataset

Format: text/tab-separated-values, 636 data points

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Western tropical South Atlantic sea surface temperature over the last 300 kyr based on Mg/Ca in shells of Globigerinoides ruber (white) from sediment core GL1180 (2023)

Nascimento, Rodrigo Azevedo ; Johnstone, Heather J H ; Kuhnert, Henning ; [et al.]

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Publication Date: 2024-05-27

Description: We investigate long-term SST variability of the western tropical South Atlantic (WTSA) using a 300 kyr-long SST record derived from Mg/Ca ratios in shells of Globigerinoides ruber (white). The foraminifera shells were derived from sediment core GL-1180, which was retrieved from 1037 m water depth at the northeastern continental margin of Brazil (8° 27'18 S, 33° 32'53 W) by the Brazilian oil company Petrobras. Measurements of Mg/Ca ratios were performed using an inductively coupled plasma optical emission spectrometer (ICP-OES) at MARUM-Center for Marine Environmental Sciences, University of Bremen. Additionally, Fe, Mn, and Al were measured to monitor contaminants.

Keywords: AGE; Calculated; Core; CORE; DEPTH, sediment/rock; GL1180; GL-1180; Glacial cycles; Globigerinoides ruber; Globigerinoides ruber white, Aluminium/Calcium ratio; Globigerinoides ruber white, Iron/Calcium ratio; Globigerinoides ruber white, Magnesium/Calcium ratio; Globigerinoides ruber white, Manganese/Calcium ratio; ICP-OES; Mg/Ca; Sea surface temperature; Sea surface temperature, standard deviation; SST from Mg/Ca ratios; western tropical Atlantic; western tropical South Atlantic

Type: Dataset

Format: text/tab-separated-values, 3270 data points

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