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  • 1
    Series available for loan
    Series available for loan
    Recommended standards for recording the location of mineral deposits (1972)
    Ottawa : Geological Survey of Canada
    Associated volumes
    Details Availability
    Call number: SR 90.0008(72-9)
    In: Paper
    Type of Medium: Series available for loan
    Pages: VII, 8 S.
    Series Statement: Paper / Geological Survey of Canada 72-9
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 2
    Monograph available for loan
    Monograph available for loan
    Crystallography and crystal defects (1970)
    Herndon : TechBooks
    Details Availability
    Call number: M 96.0150
    Type of Medium: Monograph available for loan
    Pages: xi, 428 S.
    ISBN: 1878907360
    Classification:
    Mineralogy
    Language: English
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 3
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    (Appendix 1) Chemistry of sediment core W8803B-51GC
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Aluminium; Aluminium/Titanium ratio; Calcium; Carbonates; DEPTH, sediment/rock; GC; Gravity corer; ICP-ES, Inductively coupled plasma - emission spectrometry; Iron; Manganese; Opal, biogenic silica; Phosphorus; Sample comment; Silicon; Terrigenous; Titanium; W8803B; W8803B-51GC; Wecoma
    Type: Dataset
    Format: text/tab-separated-values, 540 data points
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  • 4
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    230Th-normalized opal flux analyses of sediment core MD03-2705 (2013)
    PANGAEA
    Details
    Publication Date: 2023-10-05
    Keywords: Age model; Calcium carbonate; Calcium carbonate, flux; CALYPSO; Calypso Corer; DEPTH, sediment/rock; Isotope dilution inductively coupled plasma mass spectrometry; MD03-2705; North Atlantic; Opal, biogenic silica; Opal, flux; Protactinium/Thorium ratio; Th-normalized; Thorium-230 excess; Thorium-232; Thorium-232, flux; Total sediment, flux; Uranium-238, authigenic; Uranium-238, flux
    Type: Dataset
    Format: text/tab-separated-values, 583 data points
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  • 5
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    (Table 2) AMS radiocarbon dates from sediment cores obtained during James Clark Ross cruise JR142, Kvitøya Trough (2010)
    PANGAEA
    In:  Supplement to: Hogan, Kelly A; Dowdeswell, Julian A; Noormets, R; Evans, Jeffrey; Ó Cofaigh, Colm; Jakobsson, Martin (2010): Submarine landforms and ice-sheet flow in the Kvitøya Trough, northwestern Barents Sea. Quaternary Science Reviews, 29(25-26), 3545-3562, https://doi.org/10.1016/j.quascirev.2010.08.015
    Details
    Publication Date: 2023-12-13
    Description: High-resolution geophysical and sediment core data are used to investigate the pattern and dynamics of former ice flow in Kvitøya Trough, northwestern Barents Sea. A new swath-bathymetric dataset identifies three types of submarine landform in the study area (streamlined landforms, meltwater channels and cavities, iceberg scours). Subglacially produced streamlined landforms provide a record of ice flow through Kvitøya Trough during the last glaciation. Flow directions are inferred from the orientations of streamlined landforms (drumlins, crag-and-tail features). Ice flowed northward for at least 135 km from an ice divide at the southern end of Kvitøya Trough. A large channel-cavity system incised into bedrock in the southern trough indicates that subglacial meltwater was present at the former ice-sheet base. Modest landform elongation ratios and a lack of mega-scale glacial lineations suggest that, although ice in Kvitøya Trough was melting at the bed and flowed faster than the likely thin and cold-based ice on adjacent banks, a major ice stream probably did not occupy the trough. Retreat was relatively rapid after 14-13.5 14C kyr B.P. and probably progressed via ice sheet-bed decoupling in response to rising sea level. There is little evidence for still stands during ice retreat or of ice-proximal deglacial sediments. Relict iceberg scours in present-day water depths of more than 350 m in the northern trough indicate that calving was an important mass loss mechanism during retreat.
    Keywords: Age, 14C AMS; Age, dated; Age, dated material; Age, dated standard deviation; Core; DEPTH, sediment/rock; Event label; GC; Gravity corer; International Polar Year (2007-2008); IPY; James Clark Ross; JR142; JR142-GC10; JR142-GC11; JR20060728; Latitude of event; Longitude of event; Svalbard Shelf
    Type: Dataset
    Format: text/tab-separated-values, 12 data points
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  • 6
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    (Table S1) Age determination of sediment core MD02-2550C2 (2010)
    PANGAEA
    In:  Supplement to: Williams, Carlie; Flower, Benjamin P; Hastings, D; Guilderson, Thomas P; Quinn, Kelly A; Goddard, Ethan A (2010): Deglacial abrupt climate change in the Atlantic Warm Pool: A Gulf of Mexico perspective. Paleoceanography, 115(4), PA4221, https://doi.org/10.1029/2010PA001928
    Details
    Publication Date: 2023-11-04
    Description: During the last deglaciation, Greenland ice core and North Atlantic sediment records exhibit multiple abrupt climate events including the Younger Dryas cold episode (12.9-11.7 ka). However, evidence for the presence of the Younger Dryas in the Gulf of Mexico (GOM) and the relationship between GOM sea surface temperature (SST) and high-latitude climate change is less clear. We present new Mg/Ca-SST records from two varieties of the planktonic foraminifer Globigerinoides ruber (white and pink) to assess northern GOM SST history from approximately 18.4-10.8 ka. Thirty-five accelerator mass spectrometry (AMS) 14C dates from Orca Basin core MD02-2550 provide excellent age control and document high sedimentation rates (~40 cm/kyr). G. ruber (white and pink) Mg/Ca-SST data exhibit increases (~4.6 ± 0.6°C and ~2.2 ± 0.5°C, respectively) from at least 17.8-16.6 ka, with nearly decadal resolution that are early relative to the onset of the Bolling-Allerod interstadial. Moreover, G. ruber (white) SST decreases at 16.0-14.7 ka (~1.0 ± 0.5°C) and 12.8-11.6 ka (~2.4 ± 0.6°C) correlate to the Oldest and Younger Dryas in Greenland and Cariaco Basin. The G. ruber (pink) SST record, which reflects differences in seasonality and/or depth habitat, is often not in phase with G. ruber (white) and closely resembles Antarctic air temperature records. Overall, it appears that Orca Basin SST records follow Antarctic air temperature early in the deglacial sequence and exhibit enhanced seasonality during Greenland stadials.
    Keywords: Age, 14C AMS; Age, 14C calibrated, MARINE09 (Reimer et al., 2009); Age, dated; Age, dated, error to older; Age, dated, error to younger; Age, dated standard deviation; Calendar age; Calypso Square Core System; CASQS; DEPTH, sediment/rock; IMAGES IX - PAGE; Laboratory code/label; Marion Dufresne (1995); MD022550C2; MD02-2550C2; MD127; Orca Basin
    Type: Dataset
    Format: text/tab-separated-values, 207 data points
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  • 7
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    Major components and major and trace elements from ODP Site 175-1085 (2002)
    PANGAEA
    In:  Supplement to: Murray, Richard W; Christensen, Beth A; Kalbas, James L; Kryc, Kelly A (2002): Pliocene export production and terrigenous provenance of the Southern Cape Basin, southwest African margin. Marine Geology, 180(1-4), 133-150, https://doi.org/10.1016/S0025-3227(01)00210-9
    Details
    Publication Date: 2024-01-09
    Description: We have analyzed 33 Pliocene bulk sediment samples from Ocean Drilling Program Site 1085 in the Cape Basin, located offshore of western Africa in the Angola-Benguela Current system, for 17 major and trace elements, and interpreted their associations and temporal variations in the context of an allied data set of CaCO3, opal, and Corg. We base our interpretations on elemental ratios, accumulation rates, inter-element correlations, and several multi-element statistical techniques. On the basis of qualitative assessment of downhole changes in the distributions of P and Ba, utilized as proxies of export production, we conclude that highs in bulk and biogenic accumulation that occur at 3.2 Ma, 3.0 Ma, 2.4 Ma, and 2.25 Ma were caused by increases in export production as well as terrigenous flux, and record a greater sequestering of organic matter during these time periods. Studies of refractory elements and other indicator proxies (SiO2, Al2O3, TiO2, Fe2O3, MgO, V, Cr, Sr, and Zr) strongly suggest that the terrigenous component of the bulk sediment is composed of two compositional end-members, one being 'basaltic' in composition and the other similar to an 'average shale'. The basaltic end-member comprises approximately 10-15% of the total bulk sediment and its presence is consistent with the local geology of source material in the drainage basin of the nearby Orange River. The increase in bulk accumulation at 2.4 Ma appears to reflect a greater relative increase in basaltic input than the relative increase in shale-type input. Although studies such as this cannot precisely identify the transport mechanisms of the different terrigenous components, these results are most consistent with variations in sea level (and associated changes in shelf geometry and fluvial input) being responsible for the changing depositional conditions along the Angolan Margin during this time period.
    Keywords: 175-1085; Benguela Current, South Atlantic Ocean; COMPCORE; Composite Core; Joides Resolution; Leg175; Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 8
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    Log-ratio of silica to aluminium counts (ln(Si/Al)) from ODP site 108-658 (2013)
    PANGAEA
    In:  Supplement to: Meckler, Anna Nele; Sigman, Daniel M; Gibson, Kelly A; Francois, Roger; Martínez‐García, Alfredo; Jaccard, Samuel L; Röhl, Ursula; Peterson, Larry C; Tiedemann, Ralf; Haug, Gerald H (2013): Deglacial pulses of deep-ocean silicate into the subtropical North Atlantic Ocean. Nature, 495(7442), 495-498, https://doi.org/10.1038/nature12006
    Details
    Publication Date: 2024-01-09
    Description: Growing evidence suggests that the low atmospheric CO2 concentration of the ice ages resulted from enhanced storage of CO2 in the ocean interior, largely as a result of changes in the Southern Ocean1. Early in the most recent deglaciation, a reduction in North Atlantic overturning circulation seems to have driven CO2 release from the Southern Ocean**2, 3, 4, 5, but the mechanism connecting the North Atlantic and the Southern Ocean remains unclear. Biogenic opal export in the low-latitude ocean relies on silicate from the underlying thermocline, the concentration of which is affected by the circulation of the ocean interior. Here we report a record of biogenic opal export from a coastal upwelling system off the coast of northwest Africa that shows pronounced opal maxima during each glacial termination over the past 550,000 years. These opal peaks are consistent with a strong deglacial reduction in the formation of silicate-poor glacial North Atlantic intermediate water**2 (GNAIW). The loss of GNAIW allowed mixing with underlying silicate-rich deep water to increase the silicate supply to the surface ocean. An increase in westerly-wind-driven upwelling in the Southern Ocean in response to the North Atlantic change has been proposed to drive the deglacial rise in atmospheric CO2 (refs 3, 4). However, such a circulation change would have accelerated the formation of Antarctic intermediate water and sub-Antarctic mode water, which today have as little silicate as North Atlantic Deep Water and would have thus maintained low silicate concentrations in the Atlantic thermocline. The deglacial opal maxima reported here suggest an alternative mechanism for the deglacial CO2 release**5, 6. Just as the reduction in GNAIW led to upward silicate transport, it should also have allowed the downward mixing of warm, low-density surface water to reach into the deep ocean. The resulting decrease in the density of the deep Atlantic relative to the Southern Ocean surface promoted Antarctic overturning, which released CO2 to the atmosphere.
    Keywords: Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 4 datasets
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  • 9
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    Tiepoints for ODP Site 108-658 (2013)
    PANGAEA
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    Publication Date: 2024-01-09
    Keywords: 108-658; Age model; Canarias Sea; COMPCORE; Composite Core; Depth, composite; Joides Resolution; Leg108; Method comment; Ocean Drilling Program; ODP
    Type: Dataset
    Format: text/tab-separated-values, 93 data points
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  • 10
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    ln(Si/Al) record from ODP Site 108-658, off Mauritania (2013)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 108-658; Age model; Calculated; Canarias Sea; Comment; Comment 2 (continued); COMPCORE; Composite Core; Depth, composite; DEPTH, sediment/rock; Joides Resolution; Leg108; ln-Silicon/Aluminium ratio; Ocean Drilling Program; ODP; Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 32557 data points
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