West Greenland Trough-Mouth Fan Sedimentary Data Ó Cofaigh, C.; Andrews, J.T.; Jennings, A.E.; Dowdeswell, J.A.; Hogan, K.A.; Kilfeather, A.A.; Sheldon, C. Ó Cofaigh, C. Andrews, J.T. Jennings, A.E. Dowdeswell, J.A. Hogan, K.A. Kilfeather, A.A. Sheldon, C. earth science/paleoclimate/paleoceanography (calcite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (hematite group,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (notes,null,null,null,null,paleoceanography,null,null,N,degree of fit) earth science/paleoclimate/paleoceanography (provenance,null,one standard deviation,dimensionless,null,paleoceanography,null,null,N,fraction similar to Baffin Is.) earth science/paleoclimate/paleoceanography (cleavelandite,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 (total diatoms,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,1M; (R>1; 70-80%I)) earth science/paleoclimate/paleoceanography (provenance,null,null,dimensionless,null,paleoceanography,null,null,N,fraction similar to Baffin Is.) earth science/paleoclimate/paleoceanography (provenance,null,null,dimensionless,null,paleoceanography,null,null,N,fraction similar to both sources) earth science/paleoclimate/paleoceanography (illite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,1M; (R>2; 88%I)) 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 (kaolinite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,dry branch) earth science/paleoclimate/paleoceanography (quartz,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (siderite,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,diopside) earth science/paleoclimate/paleoceanography (magnetite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (silicon dioxide,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,reported as chert) earth science/paleoclimate/paleoceanography (chlorite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,Fe-chlorite; Tusc) earth science/paleoclimate/paleoceanography (notes,null,null,null,null,paleoceanography,null,null,N,average deviation; absolute differences between the known and estimated mineral % divided by the number of mineral species) earth science/paleoclimate/paleoceanography (provenance,null,null,dimensionless,null,paleoceanography,null,null,N,fraction similar to VC43-233) earth science/paleoclimate/paleoceanography (provenance,null,null,dimensionless,null,paleoceanography,null,null,N,unexplained fraction by VC43-233 and Baffin Is.) 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 (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,1M; plus mica and smectite) earth science/paleoclimate/paleoceanography (notes,null,null,null,null,paleoceanography,null,null,N,run 2 factor score) earth science/paleoclimate/paleoceanography (dolomite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,Fe-dolomite) earth science/paleoclimate/paleoceanography (smectite,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,ferruginous) earth science/paleoclimate/paleoceanography (provenance,null,one standard deviation,dimensionless,null,paleoceanography,null,null,N,fraction similar to VC43-233) earth science/paleoclimate/paleoceanography (mineral matter,null,null,dimensionless,null,paleoceanography,null,null,N,average deviation; absolute differences between the known and estimated mineral % divided by the number of mineral species) earth science/paleoclimate/paleoceanography (microcline,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,ordered microcline) earth science/paleoclimate/paleoceanography (microcline,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,intermediate microcline) earth science/paleoclimate/paleoceanography (anorthoclase,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,null) earth science/paleoclimate/paleoceanography (amphibole,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,ferrotschermakite) earth science/paleoclimate/paleoceanography (biotite series,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,1M) earth science/paleoclimate/paleoceanography (mineral index,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,total clay minerals) earth science/paleoclimate/paleoceanography (mineral index,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,total non-clay minerals) earth science/paleoclimate/paleoceanography (provenance,null,null,dimensionless,null,paleoceanography,null,null,N,fraction similar to basal 5 sediments) earth science/paleoclimate/paleoceanography (notes,null,null,null,null,paleoceanography,null,null,N,run 1 factor score) 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 (depth,null,null,centimeter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (provenance,null,one standard deviation,dimensionless,null,paleoceanography,null,null,N,fraction similar to basal 5 sediments) earth science/paleoclimate/paleoceanography (oligoclase,sediment,null,weight percent,null,paleoceanography,null,x-ray diffraction,N,Norway source) earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean (JR175-VC46>LATITUDE 70.468833>LONGITUDE -61.0485) (HE0006-4-2PC>LATITUDE 71.22>LONGITUDE -61.49) Along the West Greenland continental margin adjoining Baffin Bay, bathymetric data show a series of large submarine fans located at the mouths of cross-shelf troughs. One of these fans, termed here ‘Uummannaq Fan’, is a trough-mouth fan built largely by debris delivered from a fast-flowing outlet of the Greenland Ice Sheet during past glacial maxima. Cores from this fan provide the first information on glacimarine sedimentary facies within a major West Greenland trough-mouth fan and on the nature of Late Weichselian–Holocene glacigenic sediment delivery to this region of the Baffin Bay margin. Glacigenic debris flows deposited on the upper slope and extending to at least 1800 m water depth in front of the trough-mouth are related to the remobilization of subglacial debris that was delivered onto the upper slope at times when an ice stream was positioned at the shelf edge. In contrast, sedimentary facies from the northern sector of the fan are characterized by hemipelagic and ice-rafted sediments and turbidites; glacigenic debris flows are notably absent in cores from this region. Quantitative X-ray diffraction studies of the <2-mm sediment fraction indicate that the bulk of the sediment in the fan is derived from Uummannaq Trough but there are distinct intervals when sediment from northern Baffin Bay sources dominates, especially on the northern limit of the fan. These data demonstrate considerable variation in the nature of sediment delivery across the Uummannaq Fan when the Greenland Ice Sheet was at the shelf edge. They highlight the variability of glacimarine depositional processes operating on trough-mouth fans on high-latitude continental margins during the last glacial maximum and indicate that glacigenic debris flows are just one of a number of mechanisms by which such large depocentres form. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Ó Cofaigh, C. Investigator : Andrews, J.T. Investigator : Jennings, A.E. Investigator : Dowdeswell, J.A. Investigator : Hogan, K.A. Investigator : Kilfeather, A.A. Investigator : Sheldon, C. 2013-08-12 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/14768 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ocofaigh2013/ocofaigh2013-he-02pc-xqrd.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ocofaigh2013/ocofaigh2013-vc46-xqrd.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ocofaigh2013/ocofaigh2013-vc46-basal.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ocofaigh2013/ocofaigh2013-vc46-source.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ocofaigh2013/ocofaigh2013-he-02pc-xqrd.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ocofaigh2013/ocofaigh2013-vc46-xqrd.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ocofaigh2013/ocofaigh2013-vc46-basal.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ocofaigh2013/ocofaigh2013-vc46-source.txt English https://www.ncdc.noaa.gov/paleo/study/14768 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ocofaigh2013/ocofaigh2013-he-02pc-xqrd.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ocofaigh2013/ocofaigh2013-vc46-xqrd.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ocofaigh2013/ocofaigh2013-vc46-basal.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ocofaigh2013/ocofaigh2013-vc46-source.txt Ó Cofaigh, C., J.T. Andrews, A.E. Jennings, J.A. Dowdeswell, K.A. Hogan, A.A. Kilfeather and C. Sheldon. 2013. Glacimarine lithofacies, provenance and depositional processes on a West Greenland trough-mouth fan. Journal of Quaternary Science, 28(1), 13-26. DOI: 10.1002/jqs.2569. -61.49 70.468833 -61.0485 71.22