Mineral signature of Hudson Strait and Hudson Strait Heinrich events
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PANGAEA
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
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PANGAEA
2023
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| _version_ | 1867169520335978496 |
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| author | Andrews, John T Roth, Wendy Piper, David J W |
| author_facet | Andrews, John T Roth, Wendy Piper, David J W |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Data sets are included of mineral weight %s of sediments based on the whole pattern quantitative X-ray Diffraction (qXRD) approach (Eberl, 2003) on the < 2 mm sediment fraction. ZnO is used as a calibration spike and the Excel macro program "Rockjock v6" was employed to obtain mineral wt% data. A detailed comparison of results obtained from known sediment mixtures is available as a supplement in the paper by Andrews and LeMasurier (Andrews and LeMasurier, 2021). The initial data sets consist of 23 non-clay and 10 clay minerals but for publications this is often reduced to 9 non-clay and 4 clay minerals by grouping (Andrews and Piper, 2023; Andrews and Piper, 2022). The column "Full Pattern" is a measure of the goodness of fit between the "whole patterns" of the selected minerals and the intensity pattern of each sample. Samples ≤ 0.13 have a close fit whereas > values may indicate the presence of minerals not selected as being present. An additional data consists of counts and identification of gravel clasts from core HU90020-074 from Orphan Knoll. This core was also sampled for X-ray diffraction analysis of Hudson Strait Heinrich events that occurred during Marine Isotope Stage 5. The mineral wt% data from Hudson Strait and from other areas are used in a sediment unmixing program "SedUnMix" (Andrews and Eberl, 2012), using the "Solver" in Excel, to predict the probable source(s) for a mineral mixture. Grain-size data on the < 2 mm sediment faction was undertaken using a Malvern Mastersizer 3000, and the Gradistat program for sediment descriptions (Blott and Pye, 2001). The wt% data for four source areas for sediments in the Labrador Sea are included as are the results for the application to cores HU20011031-059, HU91020-074, and HU2004024-042 with and without the wt% of calcite. The purpose of these data sets is to allow a specific understanding of the spatial and temporal variations in the area of Hudson Strait in order to better understand changes in the mineral composition of marine cores from the Labrador Sea, especially during Hudson Strait Heinrich events (Andrews and Voelker, 2018). |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_962728 |
| institution | PANGAEA |
| language | en |
| publishDate | 2023 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Mineral signature of Hudson Strait and Hudson Strait Heinrich events Andrews, John T Roth, Wendy Piper, David J W Hudson Strait,; Labrador Sea; Mineral compositions; Sediment unmixing; X-ray diffraction Data sets are included of mineral weight %s of sediments based on the whole pattern quantitative X-ray Diffraction (qXRD) approach (Eberl, 2003) on the < 2 mm sediment fraction. ZnO is used as a calibration spike and the Excel macro program "Rockjock v6" was employed to obtain mineral wt% data. A detailed comparison of results obtained from known sediment mixtures is available as a supplement in the paper by Andrews and LeMasurier (Andrews and LeMasurier, 2021). The initial data sets consist of 23 non-clay and 10 clay minerals but for publications this is often reduced to 9 non-clay and 4 clay minerals by grouping (Andrews and Piper, 2023; Andrews and Piper, 2022). The column "Full Pattern" is a measure of the goodness of fit between the "whole patterns" of the selected minerals and the intensity pattern of each sample. Samples ≤ 0.13 have a close fit whereas > values may indicate the presence of minerals not selected as being present. An additional data consists of counts and identification of gravel clasts from core HU90020-074 from Orphan Knoll. This core was also sampled for X-ray diffraction analysis of Hudson Strait Heinrich events that occurred during Marine Isotope Stage 5. The mineral wt% data from Hudson Strait and from other areas are used in a sediment unmixing program "SedUnMix" (Andrews and Eberl, 2012), using the "Solver" in Excel, to predict the probable source(s) for a mineral mixture. Grain-size data on the < 2 mm sediment faction was undertaken using a Malvern Mastersizer 3000, and the Gradistat program for sediment descriptions (Blott and Pye, 2001). The wt% data for four source areas for sediments in the Labrador Sea are included as are the results for the application to cores HU20011031-059, HU91020-074, and HU2004024-042 with and without the wt% of calcite. The purpose of these data sets is to allow a specific understanding of the spatial and temporal variations in the area of Hudson Strait in order to better understand changes in the mineral composition of marine cores from the Labrador Sea, especially during Hudson Strait Heinrich events (Andrews and Voelker, 2018). |
| title | Mineral signature of Hudson Strait and Hudson Strait Heinrich events |
| topic | Hudson Strait,; Labrador Sea; Mineral compositions; Sediment unmixing; X-ray diffraction |
| url | https://doi.org/10.1594/PANGAEA.962728 |