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  • 1
    Online Resource
    Online Resource
    Tectonic, Climatic, and Cryospheric Evolution of the Antarctic Peninsula. (2011)
    Newark :American Geophysical Union,
    Details
    Keywords: Climatic changes--Antarctica. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (225 pages)
    Edition: 1st ed.
    ISBN: 9781118671672
    Series Statement: Special Publications ; v.63
    URL: https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=1184589
    DDC: 559.89
    Language: English
    Note: Intro -- Title Page -- Contents -- Preface -- Introduction -- A Different Look at Gateways: Drake Passage and Australia/Antarctica -- Exhumational History of the Margins of Drake Passage From Thermochronology and Sediment Provenance -- Seismic Stratigraphy of the Joinville Plateau: Implications for Regional Climate Evolution -- Age Assessment of Eocene-Pliocene Drill Cores Recovered During the SHALDRIL II Expedition, Antarctic Peninsula -- Magnetic Properties of Oligocene-Eocene Cores From SHALDRIL II, Antarctica -- History of an Evolving Ice Sheet as Recorded in SHALDRIL Cores From the Northwestern Weddell Sea, Antarctica -- Cenozoic Glacial History of the Northern Antarctic Peninsula: A Micromorphological Investigation of Quartz Sand Grains -- Last Remnants of Cenozoic Vegetation and Organic-Walled Phytoplankton in the Antarctic Peninsula's Icehouse World -- Vegetation and Organic-Walled Phytoplankton at the End of the Antarctic Greenhouse World: Latest Eocene Cooling Events -- AGU Category Index -- Index.
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    GEOMAR EBL
  • 2
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    Clay mineralogy on five NBP cores (2012)
    PANGAEA
    In:  Supplement to: Wellner, Julia S; Anderson, John B; Ehrmann, Werner; Weaver, Fred M; Kirshner, Alexandra E; Livsey, Daniel; Simms, Alexander R (2011): History of an evolving ice sheet as recorded in SHALDRIL cores from the Northwestern Weddell Sea, Antarctica. In: Anderson, J.B. & Wellner, J.S. (eds.), Tectonic, Climatic, and Cryospheric Evolution of the Antarctic Peninsula, American Geophysical Union Special Publications, 63, 131-151, https://doi.org/10.1029/2010SP001047
    Details
    Publication Date: 2023-12-12
    Description: During 2006, the SHALDRIL program recovered cores of Eocene through Pliocene material at four locations in the northwestern Weddell Sea, each representing a key period in the evolution of the Antarctic Peninsula ice cap. The recovered cores are not continuous, yet they provide a record of climate change with samples from the late Eocene, late Oligocene, middle Miocene, and early Pliocene and represent the only series of samples recovered from the northwestern Weddell Sea and spanning the Cenozoic and the initial growth of the peninsula ice cap. Late Eocene sediments sampled in the James Ross Basin are typically characterized by very dark greenish-gray muddy fine sand with some preserved burrowing and are interpreted to represent a shallow water continental shelf setting. Rare dropstones, primarily of well-cemented sandstones and minor ice-rafted material consisting of angular grains with glacially influenced surface features record the onset of mountain glaciation, the earliest such evidence in the region. The remaining cores were collected on the Joinville Plateau to the north of the James Ross Basin. The late Oligocene sediments consist of dark gray sandy mud with some clay lenses and many burrows, likely representing a distal delta or shelf setting. This core contains only very few and small dropstones, and the individual grains show decreased angularity and fewer glacial surface features relative to late Eocene deposits. The middle Miocene strata are composed of pebbly gray diamicton, representing proximal glacimarine sediments. The lower Pliocene section also contains many ice-rafted pebbles but is dominated by sandy units rather than diamicton and is interpreted to represent a current-winnowed deposit, similar to the modern contour current-influenced sediments of the region.
    Keywords: DRILL; Drilling/drill rig; Joinville Plateau; Nathaniel B. Palmer; NBP0602A; NBP0602A-12A; NBP0602A-3C; NBP0602A-5D; NBP0602A-6C; NBP0602A-6D; Northern James Ross Basin; SHALDRIL II
    Type: Dataset
    Format: application/zip, 5 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    Clay mineralogy on sediment core NBP0602A-3C (2012)
    PANGAEA
    Details
    Publication Date: 2023-12-12
    Keywords: Chlorite; DRILL; Drilling/drill rig; Illite; Illite, integral width; Illite 5Å/10Å Esquevin-index; Illite position 10Å; Kaolinite; Nathaniel B. Palmer; NBP0602A; NBP0602A-3C; Northern James Ross Basin; Sample code/label; SHALDRIL II; Smectite; Smectite, integral width; X-ray diffraction TEXTUR, clay fraction
    Type: Dataset
    Format: text/tab-separated-values, 72 data points
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    DATA PANGAEA
  • 4
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    Clay mineralogy on sediment core NBP0602A-5D (2012)
    PANGAEA
    Details
    Publication Date: 2023-12-12
    Keywords: Chlorite; DRILL; Drilling/drill rig; Illite; Illite, integral width; Illite 5Å/10Å Esquevin-index; Illite position 10Å; Joinville Plateau; Kaolinite; Nathaniel B. Palmer; NBP0602A; NBP0602A-5D; Sample code/label; SHALDRIL II; Smectite; Smectite, integral width; X-ray diffraction TEXTUR, clay fraction
    Type: Dataset
    Format: text/tab-separated-values, 126 data points
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    DATA PANGAEA
  • 5
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    Clay mineralogy on sediment core NBP0602A-6C (2012)
    PANGAEA
    Details
    Publication Date: 2023-12-12
    Keywords: Chlorite; DRILL; Drilling/drill rig; Illite; Illite, integral width; Illite 5Å/10Å Esquevin-index; Illite position 10Å; Joinville Plateau; Kaolinite; Nathaniel B. Palmer; NBP0602A; NBP0602A-6C; Sample code/label; SHALDRIL II; Smectite; Smectite, integral width; X-ray diffraction TEXTUR, clay fraction
    Type: Dataset
    Format: text/tab-separated-values, 54 data points
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    DATA PANGAEA
  • 6
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    Clay mineralogy on sediment core NBP0602A-6D (2012)
    PANGAEA
    Details
    Publication Date: 2023-12-12
    Keywords: Chlorite; DRILL; Drilling/drill rig; Illite; Illite, integral width; Illite 5Å/10Å Esquevin-index; Illite position 10Å; Joinville Plateau; Kaolinite; Nathaniel B. Palmer; NBP0602A; NBP0602A-6D; Sample code/label; SHALDRIL II; Smectite; Smectite, integral width; X-ray diffraction TEXTUR, clay fraction
    Type: Dataset
    Format: text/tab-separated-values, 18 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 7
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    Clay mineralogy on sediment core NBP0602A-12A (2012)
    PANGAEA
    Details
    Publication Date: 2023-12-12
    Keywords: Chlorite; DRILL; Drilling/drill rig; Illite; Illite, integral width; Illite 5Å/10Å Esquevin-index; Illite position 10Å; Joinville Plateau; Kaolinite; Nathaniel B. Palmer; NBP0602A; NBP0602A-12A; Sample code/label; SHALDRIL II; Smectite; Smectite, integral width; X-ray diffraction TEXTUR, clay fraction
    Type: Dataset
    Format: text/tab-separated-values, 54 data points
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    DATA PANGAEA
  • 8
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    MATLAB script for grain images and grain-shape metrics of glacial sediments from Antarctica, Northwest Greenland, and the central Barents Sea (2023)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Description: This project explores grain-scale signatures of subglacial sediment transport and subglacial hydrologic processes using grain shape and microtexture. We compare grain-shape distributions for grains from meltwater plume deposits to those of subglacial till and ice-proximal diamicton from the same glacial setting. The study incorporates samples from marine sediment cores collected offshore of Ryder Glacier in northwest Greenland, in the central Barents Sea, and Antarctic samples from Marguerite Bay, offshore Thwaites and Pine Island glaciers, and in the western Ross Sea. This dataset contains a MATLAB script used to process grain images and calculate individual grain-shape metrics (including circularity, solidity, and eccentricity), and an Excel spreadsheet containing the grain-shape measurements. Grain images were collected in 2022-23 using a Bettersizer S3 Plus particle size and shape analyzer at the University of Virginia.
    Keywords: 19-KP-H6; Amundsen Sea; Binary Object; CAGE-15-5-1221-GC; CAGE-15-5-1222-GC; DF85-115-PC; DF85-116-PC; File content; GC; Grab; GRAB; grain micromorphology; Gravity corer; ICEDRILL; Ice drill; JGC; JM-KA09-GC; Jumbo gravity core; KAL; Kasten corer; meltwater plume deposits; Nathaniel B. Palmer; NBP15-02_KC17; NBP15-02_KC19; NBP15-02_KC22; NBP15-02_KC24; NBP19-02; NBP19-02_JGC11; NBP19-02_JGC17; NBP19-02_KC04; NBP19-02_KC13; NBP19-02_KC15; NBP19-02_KC23; NBP20-02_KC26; NBP20-02_KC33; NBP20-02_KC67; OD1507-18-GC; OD1507-31-PC; OSO09-10_KC04; OSO09-10_KC18; OSO09-10_KC25; PC; PCOR; Percussion corer; PIG-B; Piston corer; Qaanaaq_1A; Qaanaaq_2A; Qaanaaq_3A; RCD; Rotary core drilling; Ryder19-6-GC; Ryder19-7-PC; Ryder19-8-PC; Ryder19-9PC; SDM94; sediment transport; subglacial hydrology; subglacial till
    Type: Dataset
    Format: text/tab-separated-values, 6 data points
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    DATA PANGAEA
  • 9
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    Mean ages calculated by the bayesian age-depth model of sediment core JPC42 from Wide Channel, Chile (2023)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Description: Age-depth model of the JPC42 sediment core. The core chronology is based on the radiocarbon ages published in Caniupán et al. (2014, doi:10.1016/j.yqres.2014.07.009). All radiocarbon ages were re-calibrated using the SHCal20 calibration curve (Hogg et al., 2020, doi:10.1017/RDC.2020.59) and a marine reservoir age of 780 yr (Caniupán et al., 2014). The age-depth model and sedimentation rates were calculated using the BACON 2.5.5 software (Blaauw and Christen, 2011, doi:10.1214/11-BA618) in R (R Core Team, 2020, https://www.R-project.org/), taking into account the instantaneous deposition of the four turbidites at 1089 - 1049, 551 - 516, 383 - 364, and 171 - 158 cm. The table contains the mean age of the sediment every 1 mm.
    Keywords: After Troch et al., 2023; AGE; BACON age modeling (2.5.5); Bulk organic geochemistry; Calcium Carbonate; Depth, composite; Grain Size; Holocene; inorganic geochemistry; JPC; JPC42; Jumbo Piston Core; Late Glacial; Neoglaciation; Patagonia; Patagonian fjords; stable carbon isotopes; Wide Channel, Chile
    Type: Dataset
    Format: text/tab-separated-values, 12179 data points
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    DATA PANGAEA
  • 10
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    Grain size distribution of sediment core NBP19-02_JGC17 (2024)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Keywords: Antarctica; DEPTH, sediment/rock; Glaciomarine; Grain size, CILAS Laser Particle Analyser; Grain size, mean; JGC; Jumbo gravity core; Marine Sediment Core; Nathaniel B. Palmer; NBP19-02; NBP19-02_JGC17; Size fraction 〈 0.002 mm, clay; Size fraction 0.004-0.002 mm, 8.0-9.0 phi, very fine silt; Size fraction 0.008-0.004 mm, 7.0-8.0 phi, fine silt; Size fraction 0.016-0.008 mm, 6.0-7.0 phi, medium silt; Size fraction 0.032-0.016 mm, 5.0-6.0 phi, coarse silt; Size fraction 0.063-0.016 mm, coarse silt; Thwaites Glacier
    Type: Dataset
    Format: text/tab-separated-values, 133 data points
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    DATA PANGAEA
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