Baffin Bay MIS2-3 Sediment Provenance Data Andrews, J.T.; Gibb, O.T.; Jennings, A.E.; Simon, Q. Andrews, J.T. Gibb, O.T. Jennings, A.E. Simon, Q. earth science/paleoclimate/paleoceanography (mineral index,sediment,null,percent,null,paleoceanography,null,null,N,non-clay minerals) earth science/paleoclimate/paleoceanography (siderite,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (maghemite,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (total diatoms,sediment,null,count,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (notes,null,null,null,null,paleoceanography,null,null,N,degree of fit) earth science/paleoclimate/paleoceanography (illite,sediment,null,percent,null,paleoceanography,null,null,N,1M; (R>2; 88%I)) earth science/paleoclimate/paleoceanography (microcline,sediment,null,percent,null,paleoceanography,null,null,N,intermediate microcline) earth science/paleoclimate/paleoceanography (amphibole,sediment,null,percent,null,paleoceanography,null,null,N,ferrotschermakite) earth science/paleoclimate/paleoceanography (pyrite,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (smectite,sediment,null,percent,null,paleoceanography,null,null,N,Ferruginous) earth science/paleoclimate/paleoceanography (quartz,sediment,null,weight percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (cleavelandite,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (silicon dioxide,sediment,null,percent,null,paleoceanography,null,null,N,reported as chert) earth science/paleoclimate/paleoceanography (muscovite,sediment,null,percent,null,paleoceanography,null,null,N,2M1) earth science/paleoclimate/paleoceanography (orthoclase,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (anorthite,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (mineral index,sediment,null,dimensionless,null,paleoceanography,null,null,N,calcite/dolomite; median value) earth science/paleoclimate/paleoceanography (dolomite,sediment,null,percent,null,paleoceanography,null,null,N,total dolomite) earth science/paleoclimate/paleoceanography (dolomite,sediment,null,percent,null,paleoceanography,null,null,N,Fe-dolomite) earth science/paleoclimate/paleoceanography (anorthoclase,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (mineral index,sediment,null,dimensionless,null,paleoceanography,null,null,N,calcite/dolomite) earth science/paleoclimate/paleoceanography (saponite,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (illite,sediment,null,percent,null,paleoceanography,null,null,N,1M; plus mica and smectite) earth science/paleoclimate/paleoceanography (illite,sediment,null,percent,null,paleoceanography,null,null,N,1M; (R>1; 70-80%I)) earth science/paleoclimate/paleoceanography (illite,sediment,null,weight percent,null,paleoceanography,null,null,N,1M; PD3B) earth science/paleoclimate/paleoceanography (calcite,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (dolomite,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (kaolinite,sediment,null,percent,null,paleoceanography,null,null,N,dry branch) earth science/paleoclimate/paleoceanography (halite,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (pyroxene,sediment,null,percent,null,paleoceanography,null,null,N,diopside) earth science/paleoclimate/paleoceanography (hematite group,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (smectite,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (biotite series,sediment,null,percent,null,paleoceanography,null,null,N,1M) earth science/paleoclimate/paleoceanography (mineral matter,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (microcline,sediment,null,percent,null,paleoceanography,null,null,N,ordered microcline) earth science/paleoclimate/paleoceanography (oligoclase,sediment,null,percent,null,paleoceanography,null,null,N,Norway source) earth science/paleoclimate/paleoceanography (labradorite,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (bytownite,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (magnetite,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (chlorite,sediment,null,percent,null,paleoceanography,null,null,N,Fe-chlorite; Tusc) earth science/paleoclimate/paleoceanography (depth,null,null,centimeter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (mineral index,sediment,null,percent,null,paleoceanography,null,null,N,clay minerals) earth science/paleoclimate/paleocean (HU2008029-0008>LATITUDE 64.3931>LONGITUDE -58.1347) Based on quantitative X-ray diffraction mineralogical analysis of cores HU2008029-0006/0008 (857-m water depth) located south of the Davis Strait sill, we seek answers to two questions: (i) the temporal correlation of NW Labrador Shelf Sea Heinrich (H-) and Baffin Bay detrital carbonate (BBDC) events, and (ii) the provenance of the sediments? A sediment-unmixing model (SedUnMix) is used to determine provenance variations. Although 12 radiocarbon dates were obtained there were many age reversals and we favour a depth/age model for HU2008029-0008PC based on correlations to well-dated neighbouring cores north and south of Davis Strait. We find no correlation between H- and BBDC events except for H-0, which appears to be a broadly synchronous event along the NE Canadian margin and is correlative with an episode of major moraine building along this flank of the Laurentide Ice Sheet. Unmixing of the sediment composition based on six potential glacial source regions indicates that the bulk of the sediment in 0008PC is derived from glacial erosion of West Greenland, but is punctuated by intervals when dolomite-rich sediments, derived from outcrops north of Baffin Bay, dominate the composition. Estimated dates on these BBDC events are ~13, 25 and 30-38 cal ka BP. STUDY NOTES: X-ray diffraction mineralogical analysis of cores HU2008029-0006/0008, Baffin Bay, North Atlantic. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Andrews, J.T. Investigator : Gibb, O.T. Investigator : Jennings, A.E. Investigator : Simon, Q. 2014-05-07 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/16476 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014b/andrews2014b.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014b/andrews2014b.xls https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014b/andrews2014b.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014b/andrews2014b.xls English https://www.ncdc.noaa.gov/paleo/study/16476 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014b/andrews2014b.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014b/andrews2014b.xls John T. Andrews, Olivia T. Gibb, Anne E. Jennings and Quentin Simon2014Variations in the provenance of sediment from ice sheets surrounding Baffin Bay during MIS 2 and 3 and export to the Labrador Shelf Sea: site HU2008029-0008 Davis StraitJournal of Quaternary Science2913-1310.1002/jqs.2643http://onlinelibrary.wiley.com/doi/10.1002/jqs.2643/abstract START YEAR: 50000 cal yr BP * END YEAR: 1000 cal yr BP -58.1347 64.3931 -58.1347 64.3931