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  • 1
    Call number: 13/ZSP-607(199)
    In: Proceedings of the ocean drilling program [Elektronische Ressource]
    Type of Medium: Series available for loan
    Pages: 1 CD-ROM : 1 Booklet (XXII, 39, 41 S.)
    Series Statement: Proceedings of the ocean drilling program [Elektronische Ressource] : Scientific results 199.2001
    Classification:
    Oceanology
    Location: Reading room
    Branch Library: GFZ Library
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  • 2
    Publication Date: 2023-02-24
    Keywords: 339-U1385; AGE; anisotropy of magnetic susceptibility; Calculated, 3-point moving average; COMPCORE; Composite Core; DEPTH, sediment/rock; Exp339; Grain Size; Iberian margin; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Joides Resolution; ln-Zirconium/Rubidium ratio; Mediterranean Outflow; Mediterranean Outflow Water; X-ray fluorescence
    Type: Dataset
    Format: text/tab-separated-values, 6073 data points
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  • 3
    Publication Date: 2023-02-24
    Keywords: 339-U1391; AGE; Anisotropy-magnetic susceptibility, factor Pj; Anisotropy-magnetic susceptibility, factor q; Anisotropy-magnetic susceptibility, factor T; Anisotropy-magnetic susceptibility, K max declination; anisotropy of magnetic susceptibility; COMPCORE; Composite Core; DEPTH, sediment/rock; Exp339; Grain Size; Iberian margin; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; IODP Depth Scale Terminology; Joides Resolution; Mediterranean Outflow; Mediterranean Outflow Water; X-ray fluorescence
    Type: Dataset
    Format: text/tab-separated-values, 1370 data points
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  • 4
    Publication Date: 2023-02-24
    Keywords: 339-U1391; AGE; anisotropy of magnetic susceptibility; COMPCORE; Composite Core; DEPTH, sediment/rock; Exp339; Grain Size; Iberian margin; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; IODP Depth Scale Terminology; Joides Resolution; ln-Calcium/Titanium ratio; ln-Zirconium/Rubidium ratio; Mediterranean Outflow; Mediterranean Outflow Water; X-ray fluorescence; X-ray fluorescence (XRF)
    Type: Dataset
    Format: text/tab-separated-values, 46162 data points
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  • 5
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    PANGAEA
    In:  Supplement to: van Peer, Tim E; Xuan, Chuang; Lippert, Peter C; Liebrand, Diederik; Agnini, Claudia; Wilson, Paul A (2017): Extracting a Detailed Magnetostratigraphy From Weakly Magnetized, Oligocene to Early Miocene Sediment Drifts Recovered at IODP Site U1406 (Newfoundland Margin, Northwest Atlantic Ocean). Geochemistry, Geophysics, Geosystems, 18(11), 3910-3928, https://doi.org/10.1002/2017GC007185
    Publication Date: 2023-04-28
    Description: Fine-grained magnetic particles in deep-sea sediments often statistically align with the ambient magnetic field during (and shortly after) deposition and can therefore record geomagnetic reversals. Correlation of these reversals to a geomagnetic polarity time scale is an important geochronological tool that facilitates precise stratigraphic correlation and dating of geological records globally. Sediments often carry a remanence strong enough for confident identification of polarity reversals, but in some cases a low signal-to-noise ratio prevents the construction of a reliable and robust magnetostratigraphy. Here we implement a data-filtering protocol, which can be integrated with the UPmag software package, to automatically reduce the maximum angular deviation and statistically mask noisy data and outliers deemed unsuitable for magnetostratigraphic interpretation. This protocol thus extracts a clearer signal from weakly magnetized sediments recovered at Integrated Ocean Drilling Program (IODP) Expedition 342 Site U1406 (Newfoundland margin, northwest Atlantic Ocean). The resulting magnetostratigraphy, in combination with shipboard and shore-based biostratigraphy, provides an age model for the study interval from IODP Site U1406 between Chrons C6Ar and C9n (~21–27 Ma). We identify rarely observed geomagnetic directional changes within Chrons C6Br, C7r, and C7Ar, and perhaps within Subchron C8n.1n. Our magnetostratigraphy dates three intervals of unusual stratigraphic behavior within the sediment drifts at IODP Site U1406 on the Newfoundland margin. These lithostratigraphic changes are broadly concurrent with the coldest climatic phases of the middle Oligocene to early Miocene and we hypothesize that they reflect changes in bottom water circulation.
    Keywords: 342-U1406; DRILL; Drilling/drill rig; Exp342; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Joides Resolution; Paleogene Newfoundland Sediment Drifts
    Type: Dataset
    Format: application/zip, 4 datasets
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  • 6
    Publication Date: 2023-01-13
    Keywords: AGE; Bottom water temperature; Cenozoic temperature ice volume Mg/Ca; Magnesium/Calcium ratio; Reconstructed; δ18O, seawater, reconstructed
    Type: Dataset
    Format: text/tab-separated-values, 150 data points
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  • 7
    Publication Date: 2023-01-30
    Description: We present a compilation of measurements of bedrock Sr, Nd and Pb isotopic composition across the North American Southwest from the published literature. These datasets allow us to identify the isotopic signature of aeolian material exported from the North American Southwest and explore the contribution of dust to the California Borderland Basins.
    Keywords: dust; LATITUDE; lead; Lead-206/Lead-204 ratio; Lead-207/Lead-204 ratio; Lead-208/Lead-204 ratio; Location; LONGITUDE; Neodymium; Neodymium-143/Neodymium-144 ratio; North America; paleoclimatology; Quaternary; Radiogenic isotopes; Reference/source; Sample code/label; Strontium (Sr); Strontium-87/Strontium-86 ratio; ε-Neodymium
    Type: Dataset
    Format: text/tab-separated-values, 38086 data points
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  • 8
    Publication Date: 2023-01-30
    Description: Strontium, neodymium and lead isotopic signatures were measured on a suite of surface sediment samples from nine different playa lakes across the Mojave Desert. All sediment samples had carbonates and organic material removed before full chemical digestion prior to analysis. Ferromanganese coatings were also removed in a subset of samples, with no notable isotopic effect from an anthropogenic contribution of Pb detected.
    Keywords: AF; Comment; DH; dust; EM; Event label; LATITUDE; lead; Lead-206/Lead-204 ratio; Lead-207/Lead-204 ratio; Lead-208/Lead-204 ratio; LONGITUDE; Mojave_AF; Mojave_DH; Mojave_EM; Mojave_RL; Mojave_RO; Mojave_SF; Mojave_SI; Mojave_SO; Mojave_YF; Mojave, California, U.S.A.; Neodymium; Neodymium-143/Neodymium-144 ratio; Neodymium-143/Neodymium-144 ratio, error; North America; paleoclimatology; Quaternary; Radiogenic isotopes; RL; RO; Sample code/label; Sediment sample; SES; SF; SI; SO; Strontium (Sr); Strontium-87/Strontium-86 ratio; Strontium-87/Strontium-86 ratio, error; YF; ε-Neodymium; ε-Neodymium, error
    Type: Dataset
    Format: text/tab-separated-values, 334 data points
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  • 9
    Publication Date: 2023-02-07
    Description: Strontium, neodymium and lead isotopic signatures were measured on sediment samples from silt mantles that drape the bedrock of Anacapa and San Clemente Islands offshore California. These silt mantles are interpreted to be aeolian in origin and were deposited in the Late Quaternary (Muhs et al. 2007). All sediment samples had carbonates, organic material, biogenic silica and Fe-Mn oxides removed before full chemical digestion prior to analysis. Size fractions analysed were 〈63 μm and 〈10 μm.
    Keywords: ANA; Channel Islands, California, U.S.A.; dust; Event label; Grain size, maximum; LATITUDE; lead; Lead-206/Lead-204 ratio; Lead-207/Lead-204 ratio; Lead-208/Lead-204 ratio; LONGITUDE; Neodymium; Neodymium-143/Neodymium-144 ratio; Neodymium-143/Neodymium-144 ratio, error; North America; paleoclimatology; Quaternary; Radiogenic isotopes; Sample code/label; SCl; Sediment sample; SES; SiltMantles_ANA; SiltMantles_SCl; Strontium (Sr); Strontium-87/Strontium-86 ratio; Strontium-87/Strontium-86 ratio, error; ε-Neodymium; ε-Neodymium, error
    Type: Dataset
    Format: text/tab-separated-values, 154 data points
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  • 10
    Publication Date: 2023-02-24
    Description: Mediterranean Outflow Water (MOW) adds salt and density to open ocean intermediate waters and is therefore an important motor of Atlantic meridional overturning circulation (AMOC) and climate variability. However, the variability in strength and depth of MOW on geological timescales is poorly documented. Here we present new detailed records, with excellent age control, of MOW variability from 416 ka to present from rapidly accumulated marine sediments recovered from the West Iberian Margin during Integrated Ocean Drilling Program (IODP) Expedition 339. Our records of x-ray fluorescence (XRF), physical grain size and palaeocurrent information from the anisotropy of magnetic susceptibility (AMS) indicate (i) a close relationship between the orientation of principle AMS axes and glacial-interglacial cycles and (ii) two distinct regimes of MOW behaviour over the last ~416 kyrs in grain size and AMS variability at orbital (mainly precessional) and suborbital timescales. Between marine isotope stages (MIS) 10 and MIS 4, MOW was focused at a generally shallow depth on the West Iberian Margin, and changes in MOW strength were strongly paced by precession. A transition interval occurred during MIS 5 and 4, when MOW deepened and millennial-scale variability in strength flow strength was superimposed on orbitally paced change. During MIS 11 and from MIS 3 to present, MOW was deeply focused and millennial-scale variability dominated. We infer that late Pleistocene variability in MOW strength and depth were strongly climate- influenced and that changes in circum-Mediterranean rainfall climate were likely a primary control.
    Keywords: 339-U1385; anisotropy of magnetic susceptibility; COMPCORE; Composite Core; Exp339; Grain Size; Iberian margin; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Joides Resolution; Mediterranean Outflow; Mediterranean Outflow Water; X-ray fluorescence
    Type: Dataset
    Format: application/zip, 5 datasets
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