noaa-ocean-14768 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. West Greenland Trough-Mouth Fan Sedimentary Data 2013-08-12 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/14768 Investigator C. Ó Cofaigh Investigator J.T. Andrews Investigator A.E. Jennings Investigator J.A. Dowdeswell Investigator K.A. Hogan Investigator A.A. Kilfeather Investigator C. Sheldon 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 geochemistry earth science paleoclimate paleocean lithology geoscientificInformation Complete 70.468833 71.22 -61.49 -61.0485 -1829 -845 Ocean Atlantic Ocean North Atlantic Ocean JR175-VC46>LATITUDE 70.468833>LONGITUDE -61.0485 Ocean Atlantic Ocean North Atlantic Ocean HE0006-4-2PC>LATITUDE 71.22>LONGITUDE -61.49 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII 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.

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.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ocofaigh2013/ocofaigh2013-he-02pc-xqrd.txt GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ocofaigh2013/ocofaigh2013-vc46-xqrd.txt GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ocofaigh2013/ocofaigh2013-vc46-basal.txt GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ocofaigh2013/ocofaigh2013-vc46-source.txt USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11