Baffin Bay Holocene/Late Glacial Mineralogical Data Andrews, J.T.; Eberl, D.D. Andrews, J.T. Eberl, D.D. earth science/paleoclimate/paleoceanography (calcite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (illite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,1MillR>2) earth science/paleoclimate/paleoceanography (calcite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,Mg calcite) earth science/paleoclimate/paleoceanography (saturation isothermal remanent magnetization,sediment,null,unspecified unit,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (isothermal remanent magnetization,sediment,null,unspecified unit,null,paleoceanography,null,null,N,backfield isothermal remanent magnetization 0.1T) earth science/paleoclimate/paleoceanography (grain size mean,sediment,null,unspecified unit,null,paleoceanography,null,laser particle size analysis,N,null) earth science/paleoclimate/paleoceanography (microcline,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,ordered microcline feldspar) earth science/paleoclimate/paleoceanography (albite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (labradorite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (pyroxene,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (aragonite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (S-ratio,sediment,null,dimensionless,null,paleoceanography,null,null,N,S 0.3) earth science/paleoclimate/paleoceanography (grain size class,sediment,null,dimensionless,null,paleoceanography,null,laser particle size analysis,N,clay/silt ratio) earth science/paleoclimate/paleoceanography (dolomite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,total dolomite) earth science/paleoclimate/paleoceanography (dolomite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (grain size skewness,sediment,null,dimensionless,null,paleoceanography,null,laser particle size analysis,N,null) earth science/paleoclimate/paleoceanography (blue-yellow contrast,sediment,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (quartz,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (sample identification,null,null,null,null,paleoceanography,null,null,C,null) earth science/paleoclimate/paleoceanography (siderite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (halite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (magnetite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (longitude,null,null,degree east,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (clay,sediment,null,percent,null,paleoceanography,null,laser particle size analysis,N,<2mm fraction) earth science/paleoclimate/paleoceanography (red-green contrast,sediment,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (microcline,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,intermediate microcline feldspar) earth science/paleoclimate/paleoceanography (orthoclase,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (pyrite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (maghemite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (total diatoms,sediment,null,weight percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (kaolinite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (saponite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (illite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,Illite1MPD3B) earth science/paleoclimate/paleoceanography (clay,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (collection water depth,null,null,meter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (isothermal remanent magnetization,sediment,null,unspecified unit,null,paleoceanography,null,null,N,backfield isothermal remanent magnetization 0.3T) earth science/paleoclimate/paleoceanography (silt,sediment,null,percent,null,paleoceanography,null,laser particle size analysis,N,<2mm fraction) earth science/paleoclimate/paleoceanography (grain size standard deviation,sediment,null,unspecified unit,null,paleoceanography,null,laser particle size analysis,N,null) earth science/paleoclimate/paleoceanography (grain size kurtosis,sediment,null,dimensionless,null,paleoceanography,null,laser particle size analysis,N,null) earth science/paleoclimate/paleoceanography (lightness,sediment,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (anorthoclase,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (oligoclase,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (dolomite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,Fe-dolomite) earth science/paleoclimate/paleoceanography (amphibole,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (muscovite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,Muscov2M1) earth science/paleoclimate/paleoceanography (isothermal remanent magnetization,sediment,null,unspecified unit,null,paleoceanography,null,null,N,hard isothermal remanent magnetization; HIRM0.1) earth science/paleoclimate/paleoceanography (isothermal remanent magnetization,sediment,null,unspecified unit,null,paleoceanography,null,null,N,HIRM0.3) earth science/paleoclimate/paleoceanography (mineral index,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,total non-clay) earth science/paleoclimate/paleoceanography (smectite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,Ferruginous smectite) earth science/paleoclimate/paleoceanography (chlorite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,Fe-Chlorite) earth science/paleoclimate/paleoceanography (S-ratio,sediment,null,dimensionless,null,paleoceanography,null,null,N,S 0.1) earth science/paleoclimate/paleoceanography (bytownite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (anorthite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (quartz,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,chert.8.4nm) earth science/paleoclimate/paleoceanography (illite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,1MillR>1) earth science/paleoclimate/paleoceanography (latitude,null,null,degree north,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (mass magnetic susceptibility,sediment,null,unspecified unit,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (sand,sediment,null,percent,null,paleoceanography,null,laser particle size analysis,N,<2mm fraction) earth science/paleoclimate/paleocean (JC175BC06>LATITUDE 69.933>LONGITUDE -63.06) (HU2008029-66>LATITUDE 72.434>LONGITUDE -67.878) (HU2008029-14>LATITUDE 70.461>LONGITUDE -64.657) (HU2008029-19>LATITUDE 75.469>LONGITUDE -70.635) (HU2008029-68>LATITUDE 68.228>LONGITUDE -57.618) To better understand the glacial history of the ice sheets surrounding Baffin Bay and to provide information on sediment pathways, samples from 82 seafloor grabs and core tops, and from seven box cores were subjected to quantitative X-ray diffraction weight percent (wt.%) analysis of the <2 mm sediment fraction. The samples were collected between 67°N and 78°N, in water depths of 155 to 2375 m and were retrieved on cruises between A.D. 1964 and 2009. Grain size, magnetic characteristics, and colour reflectance data were also obtained on many of the samples. Twenty-one non-clay and 10 clay mineral species were identified; the average wt.% of the non-clay minerals was 70% and was dominated by quartz, various feldspars, and dolomite, whereas the dominant clay minerals were 1 M illite, biotite, and chlorite. Cluster analysis on principal component scores identified three main mineral groups, which also had strong associations with grain size and sediment magnetic properties. Box cores from the deep central basin (>2000 m) all show an abrupt drop in calcite wt.% (post-5 cal ka BP?) following a major peak in detrital carbonate (mainly dolomite). This dolomite-rich detrital carbonate (DC) event in JR175BC06 is possibly coeval with the Younger Dryas cold event. Four possible glacial-sourced end members were employed in a compositional unmixing algorithm to gain insight into down core changes in sediment provenance at the deep central basin. Estimates of the rates of sediment accumulation in the central basin are only in the range of 2 to 4 cm/cal ka, surprisingly low given the glaciated nature of the surrounding land. STUDY NOTES: Sediment mineral composition data from X-ray diffraction weight percent (wt.%) analysis of the <2 mm sediment fraction from 82 seafloor samples and 6 box cores collected in Baffin Bay. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Andrews, J.T. Investigator : Eberl, D.D. 2011-11-17 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/12275 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2011/andrews2011.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2011/andrews2011.xls https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2011/andrews2011.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2011/andrews2011.xls English https://www.ncdc.noaa.gov/paleo/study/12275 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2011/andrews2011.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2011/andrews2011.xls Andrews, J.T. and D.D. Eberl. 2011. Surface (sea floor) and near-surface (box cores) sediment mineralogy in Baffin Bay as a key to sediment provenance and ice sheet variations. Canadian Journal of Earth Sciences, Vol. 48, pp. 1307-1328. doi: 10.1139/e11-021 START YEAR: 13000 cal yr BP * END YEAR: 2000 cal yr BP -70.635 68.228 -57.618 75.469