Grain-size distributions and bulk chemistry of sediment core MD00-2361

Autoria(s): Stuut, Jan-Berend W; Temmesfeld, Felix; de Deckker, Patrick
Cobertura

LATITUDE: -22.080000 * LONGITUDE: 113.480000
Data(s)

01/04/2014
Resumo

The terrigenous fraction of sediments from a deep-sea sediment core recovered from the northwestern Western Australian continental slope offshore North West Cape, SE Indian Ocean, reveals a history of Western Australian climate throughout the last 550 ka. End-member modelling of a data set of grain-size distributions (n = 438) of the terrigenous sediment fraction allows to interpret the record in terms of aeolian and fluvial sediment deposition, both related to palaeo-environmental conditions in the North West Cape area. The data set can be best described by two aeolian end members and one fluvial one. Changes in the ratio of the two aeolian end members over the fluvial one are interpreted as aridity variations in northwestern Western Australia. These grain-size data are compared with bulk geochemical data obtained by XRF scans of the core. Log-ratios of the elements Zr/Fe and Ti/Ca, which indicate a terrigenous origin, corroborate the grain-size data. We postulate that the mid- to late Quaternary near North West Cape climate was relatively arid during the glacial and relatively humid during the interglacial stages, owing to meridional shifts in the atmospheric circulation system. Opposite to published palaeo-environmental records from the same latitude (20°S) offshore Chile and offshore Namibia, the Australian aridity record does not show the typical southern hemisphere climate variability of humid glacials and dry interglacials, which we interpret to be the result of the relatively large land mass of the Australian continent, which emphasises a strong monsoonal climatic system.
Formato

application/zip, 6 datasets
Identificador

https://doi.pangaea.de/10.1594/PANGAEA.831363

doi:10.1594/PANGAEA.831363
Idioma(s)

en
Publicador

PANGAEA
Relação

Spooner, Michelle; de Deckker, Patrick; Barrows, Timothy T; Fifield, L Keith (2011): The behaviour of the Leeuwin Current offshore NW Australia during the last five glacial-interglacial cycles. Global and Planetary Change, 75(3-4), 119-132, doi:10.1016/j.gloplacha.2010.10.015
Direitos

CC-BY: Creative Commons Attribution 3.0 Unported

Access constraints: unrestricted
Fonte

Supplement to: Stuut, Jan-Berend W; Temmesfeld, Felix; de Deckker, Patrick (2014): A 550 ka record of aeolian activity near North West Cape, Australia: inferences from grain-size distributions and bulk chemistry of SE Indian Ocean deep-sea sediments. Quaternary Science Reviews, 83, 83-94, doi:10.1016/j.quascirev.2013.11.003
Palavras-Chave #0.044-0.04 µm; 0.048-0.044 µm; 0.05 µm; 0.053-0.048 µm; 0.058-0.053 µm; 0.06 µm; 0.064-0.058 µm; 0.07-0.064 µm; 0.077-0.07 µm; 0.08 µm; 0.084-0.077 µm; 0.09 µm; 0.093-0.084 µm; 0.102-0.093 µm; 0.11 µm; 0.112-0.102 µm; 0.123-0.112 µm; 0.13 µm; 0.134-0.123 µm; 0.148-0.134 µm; 0.16 µm; 0.162-0.148 µm; 0.178-0.162 µm; 0.195-0.178 µm; 0.2 µm; 0.214-0.195 µm; 0.235-0.214 µm; 0.24 µm; 0.258-0.235 µm; 0.28 µm; 0.284-0.258 µm; 0.311-0.284 µm; 0.34 µm; 0.342-0.311 µm; 0.375-0.342 µm; 0.41 µm; 0.412-0.375 µm; 0.452-0.412 µm; 0.496-0.452 µm; 0.5 µm; 0.545-0.496 µm; 0.598-0.545 µm; 0.6 µm; 0.657-0.598 µm; 0.72 µm; 0.721-0.657 µm; 0.791-0.721 µm; 0.869-0.791 µm; 0.87 µm; 0.953-0.869 µm; 1.047-0.954 µm; 1.05 µm; 1.149-1.047 µm; 1.26 µm; 1.261-1.149 µm; 1.385-1.261 µm; 1.52 µm; 1.520-1.385 µm; 1.669-1.520 µm; 1.83 µm; 1.832-1.669 µm; 10.78-9.819 µm; 101.1-92.1 µm; 1041-948.3 µm; 10EM; 11.83-10.78 µm; 11.84 µm; 111.1 µm; 111-101.1 µm; 1143-1041 µm; 12.99-11.83 µm; 121.8-111 µm; 1255-1143 µm; 133.7-121.8 µm; 133.85 µm; 1377-1255 µm; 14.26-12.99 µm; 14.27 µm; 146.8-133.7 µm; 15.65-14.26 µm; 1512-1377 µm; 161.2-146.8 µm; 161.35 µm; 1660-1512 µm; 17.18-15.65 µm; 17.2 µm; 176.9-161.2 µm; 18.86-17.18 µm; 1822-1660 µm; 194.2-176.9 µm; 194.41 µm; 2.010-1.832 µm; 2.208-2.011 µm; 2.21 µm; 2.423-2.208 µm; 2.66 µm; 2.66-2.423 µm; 2.92-2.66 µm; 20.70-18.86 µm; 20.73 µm; 2000-1822 µm; 213.2-194.2 µm; 22.73-20.70 µm; 234.1-213.2 µm; 234.27 µm; 24.95-22.73 µm; 24.98 µm; 256.9-234.1 µm; 27.38-24.95 µm; 282.1-256.9 µm; 282.37 µm; 2EM; 3.206-2.920 µm; 3.21 µm; 3.519-3.206 µm; 3.862-3.519 µm; 3.87 µm; 30.07-27.38 µm; 30.1 µm; 309.6-282.1 µm; 33.01-30.07 µm; 339.9-309.6 µm; 36.24-33.01 µm; 36.28 µm; 373.1-339.9 µm; 39.77-36.24 µm; 3EM; 4.241-3.862 µm; 4.656-4.241 µm; 4.66 µm; 409.6-373.1 µm; 43.67-39.78 µm; 43.72 µm; 449.7-409.6 µm; 47.94-43.67 µm; 493.6-449.7 µm; 4EM; 5.111-4.656 µm; 5.611-5.111 µm; 5.62 µm; 52.63-47.94 µm; 52.68 µm; 541.9-493.6 µm; 57.77-52.63 µm; 594.9-541.9 µm; 5EM; 6.159-5.611 µm; 6.761-6.159 µm; 6.77 µm; 63.42-57.77 µm; 63.48 µm; 653.0-594.9 µm; 69.62-63.42 µm; 6EM; 7.421-6.761 µm; 716.9-653.0 µm; 76.43-69.62 µm; 76.5 µm; 786.9-716.9 µm; 7EM; 8.148-7.422 µm; 8.16 µm; 8.944-8.147 µm; 83.90-76.43 µm; 863.9-786.9 µm; 8EM; 9.819-8.944 µm; 9.83 µm; 92.1-83.9 µm; 92.19 µm; 948.2-863.9 µm; 9EM; Age; AGE; Beckman Coulter Laser diffraction particle size analyzer LS 13 320; Calculated; D50; Depth; DEPTH, sediment/rock; Fraction; Goodness of fit; Grain size; Humidity; IMAGES; International Marine Global Change Study; Label; log(Fe/Ca); log(Si/Al); log(Ti/Ca); log(Zr/Fe); log EM; log-Iron/Calcium ratio; log-ratio end members; log-Silicon/Aluminium ratio; log-Titanium/Calcium ratio; log-Zirconium/Iron ratio; Median, grain size; r**2; Sample code/label; Sedimentation rate; Sed rate; Size; Size class; Size fraction; Size fraction 0.044-0.04 µm; Size fraction 0.048-0.044 µm; Size fraction 0.053-0.048 µm; Size fraction 0.058-0.053 µm; Size fraction 0.064-0.058 µm; Size fraction 0.07-0.064 µm; Size fraction 0.077-0.07 µm; Size fraction 0.084-0.077 µm; Size fraction 0.093-0.084 µm; Size fraction 0.102-0.093 µm; Size fraction 0.112-0.102 µm; Size fraction 0.123-0.112 µm; Size fraction 0.134-0.123 µm; Size fraction 0.148-0.134 µm; Size fraction 0.162-0.148 µm; Size fraction 0.178-0.162 µm; Size fraction 0.195-0.178 µm; Size fraction 0.214-0.195 µm; Size fraction 0.235-0.214 µm; Size fraction 0.258-0.235 µm; Size fraction 0.284-0.258 µm; Size fraction 0.311-0.284 µm; Size fraction 0.342-0.311 µm; Size fraction 0.375-0.342 µm; Size fraction 0.412-0.375 µm; Size fraction 0.452-0.412 µm; Size fraction 0.496-0.452 µm; Size fraction 0.545-0.496 µm; Size fraction 0.598-0.545 µm; Size fraction 0.657-0.598 µm; Size fraction 0.721-0.657 µm; Size fraction 0.791-0.721 µm; Size fraction 0.869-0.791 µm; Size fraction 0.953-0.869 µm; Size fraction 1.047-0.954 µm; Size fraction 1.149-1.047 µm; Size fraction 1.261-1.149 µm; Size fraction 1.385-1.261 µm; Size fraction 1.520-1.385 µm; Size fraction 1.669-1.520 µm; Size fraction 1.832-1.669 µm; Size fraction 10.78-9.819 µm; Size fraction 101.1-92.1 µm; Size fraction 1041-948.3 µm; Size fraction 11.83-10.78 µm; Size fraction 111-101.1 µm; Size fraction 1143-1041 µm; Size fraction 12.99-11.83 µm; Size fraction 121.8-111 µm; Size fraction 1255-1143 µm; Size fraction 133.7-121.8 µm; Size fraction 1377-1255 µm; Size fraction 14.26-12.99 µm; Size fraction 146.8-133.7 µm; Size fraction 15.65-14.26 µm; Size fraction 1512-1377 µm; Size fraction 161.2-146.8 µm; Size fraction 1660-1512 µm; Size fraction 17.18-15.65 µm; Size fraction 176.9-161.2 µm; Size fraction 18.86-17.18 µm; Size fraction 1822-1660 µm; Size fraction 194.2-176.9 µm; Size fraction 2.000-1.822 mm; Size fraction 2.010-1.832 µm; Size fraction 2.208-2.011 µm; Size fraction 2.423-2.208 µm; Size fraction 2.66-2.423 µm; Size fraction 2.92-2.66 µm; Size fraction 20.70-18.86 µm; Size fraction 213.2-194.2 µm; Size fraction 22.73-20.70 µm; Size fraction 234.1-213.2 µm; Size fraction 24.95-22.73 µm; Size fraction 256.9-234.1 µm; Size fraction 27.38-24.95 µm; Size fraction 282.1-256.9 µm; Size fraction 3.206-2.920 µm; Size fraction 3.519-3.206 µm; Size fraction 3.862-3.519 µm; Size fraction 30.07-27.38 µm; Size fraction 309.6-282.1 µm; Size fraction 33.01-30.07 µm; Size fraction 339.9-309.6 µm; Size fraction 36.24-33.01 µm; Size fraction 373.1-339.9 µm; Size fraction 39.77-36.24 µm; Size fraction 4.241-3.862 µm; Size fraction 4.656-4.241 µm; Size fraction 409.6-373.1 µm; Size fraction 43.67-39.78 µm; Size fraction 449.7-409.6 µm; Size fraction 47.94-43.67 µm; Size fraction 493.6-449.7 µm; Size fraction 5.111-4.656 µm; Size fraction 5.611-5.111 µm; Size fraction 52.63-47.94 µm; Size fraction 541.9-493.6 µm; Size fraction 57.77-52.63 µm; Size fraction 594.9-541.9 µm; Size fraction 6.159-5.611 µm; Size fraction 6.761-6.159 µm; Size fraction 63.42-57.77 µm; Size fraction 653.0-594.9 µm; Size fraction 69.62-63.42 µm; Size fraction 7.421-6.761 µm; Size fraction 716.9-653.0 µm; Size fraction 76.43-69.62 µm; Size fraction 786.9-716.9 µm; Size fraction 8.148-7.422 µm; Size fraction 8.944-8.147 µm; Size fraction 83.90-76.43 µm; Size fraction 863.9-786.9 µm; Size fraction 9.819-8.944 µm; Size fraction 92.1-83.9 µm; Size fraction 948.2-863.9 µm; sum EM; Sum of end members; Total dust
Tipo

Dataset
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