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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Macmillian Magazines Ltd.
    Nature 422 (2003), S. 602-606 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The Messinian salinity crisis—the desiccation of the Mediterranean Sea between 5.96 and 5.33 million years (Myr) ago—was one of the most dramatic events on Earth during the Cenozoic era. It resulted from the closure of marine gateways between the Atlantic Ocean and the Mediterranean ...
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 2023-05-12
    Keywords: Area/locality; DEPTH, sediment/rock; LATITUDE; Lead-206/Lead-204 ratio; Lead-206/Lead-204 ratio, error; Lead-207/Lead-204 ratio; Lead-207/Lead-204 ratio, error; Lead-208/Lead-204 ratio; Lead-208/Lead-204 ratio, error; LONGITUDE; Neodymium-143/Neodymium-144 ratio; Neodymium-143/Neodymium-144 ratio, error; Sample code/label; Sample comment; Thermal Ionization Mass Spectrometry (TIMS); ε-Neodymium
    Type: Dataset
    Format: text/tab-separated-values, 876 data points
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  • 3
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    PANGAEA
    In:  Supplement to: Hoernle, Kaj; Abt, David; Fischer, Karen M; Nichols, Holly; Hauff, Folkmar; Abers, Geoffrey A; van den Bogaard, Paul; Heydolph, Ken; Alvarado, Guillermo; Protti, Marino; Strauch, Wilfried (2008): Arc-parallel flow in the mantle wedge beneath Costa Rica and Nicaragua. Nature, 451(7182), 1094-1097, https://doi.org/10.1038/nature06550
    Publication Date: 2024-01-09
    Description: Resolving flow geometry in the mantle wedge is central to understanding the thermal and chemical structure of subduction zones, subducting plate dehydration, and melting that leads to arc volcanism, which can threaten large populations and alter climate through gas and particle emission. Here we show that isotope geochemistry and seismic velocity anisotropy provide strong evidence for trench-parallel flow in the mantle wedge beneath Costa Rica and Nicaragua. This finding contradicts classical models, which predict trench-normal flow owing to the overlying wedge mantle being dragged downwards by the subducting plate. The isotopic signature of central Costa Rican volcanic rocks is not consistent with its derivation from the mantle wedge (Feigenson et al., 2004, doi:10.1029/2003GC000621; Herrstom et al., 1995, doi:10.1130/0091-7613(1995)023〈0617:VILCAW〉2.3.CO;2; Abratis and Woerner, 2001) or eroded fore-arc complexes (Goss and Kay, 2006, doi:10.1029/2005GC001163) but instead from seamounts of the Galapagos hotspot track on the subducting Cocos plate. This isotopic signature decreases continuously from central Costa Rica to northwestern Nicaragua. As the age of the isotopic signature beneath Costa Rica can be constrained and its transport distance is known, minimum northwestward flow rates can be estimated (~63-190 mm/yr) and are comparable to the magnitude of subducting Cocos plate motion (approx85 mm/yr). Trench-parallel flow needs to be taken into account in models evaluating thermal and chemical structure and melt generation in subduction zones.
    Keywords: 170-1039C; 170-1040C; Costa Rica subduction complex, North Pacific Ocean; DRILL; Drilling/drill rig; Joides Resolution; Leg170; Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 4
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    Unknown
    PANGAEA
    In:  Supplement to: Herr, B; Fuller, Michael D; Sumita, Mari; van den Bogaard, Paul; Schmincke, Hans-Ulrich; Heider, Franz (2003): New tie-points for the geomagnetic polarity time scale during the Middle Miocene from the Mogán Group on Gran Canaria and Ocean Drilling Program Leg 157 site 953. International Journal of Earth Sciences, 91(4), 642-660, https://doi.org/10.1007/s00531-001-0255-6
    Publication Date: 2024-01-09
    Description: A thick sequence of volcaniclastic sediments drilled at site 953 during Ocean Drilling Program (ODP) Leg 157 northeast of Gran Canaria (Canary Islands) contains an almost complete magneto-stratigraphy back to the shield stage of the island 14.8 Ma ago. Onshore, a sequence of reversals has been identified and dated in 19 dominantly peralkaline rhyolitic ignimbrites, one rhyolitic, and one basaltic lava flow of the Mogán Group (13.35-13.95 Ma), which overlie basalt flows of the island's shield stage (〉14 Ma). The magneto-stratigraphy of the ignimbrites onshore has been correlated with the marine magneto-stratigraphy at site 953, determined in syn-ignimbritic volcaniclastic turbidites, which were deposited practically synchronously immediately following the entry of the parent pyroclastic flows into the sea around the circumference of the island. The four polarity intervals recorded in the sequence of the Mogán Group ignimbrites correspond to C5ACr, C5ACn, C5ADr and C5ADn. Single crystal 40Ar/39Ar-age determinations of the ignimbrites bracketing the polarity changes gave the following ages and uncertainties for the reversals C5AD(t) (13.95±0.07 Ma), C5AC(o) (13.89±0.08 Ma), and C5AC(t) (13.47±0.09 Ma). The newly dated polarity changes fit and refine the Miocene age model proposed in the global polarity time scale.
    Keywords: 157-953C; Age, dated; Age, paleomagnetic; Canarias Sea; Chronozone; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Joides Resolution; Leg157; Magnetometer, cryogenic; Ocean Drilling Program; ODP; Sample code/label; Sample code/label 2
    Type: Dataset
    Format: text/tab-separated-values, 184 data points
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  • 5
    Publication Date: 2024-01-09
    Keywords: 170-1039C; 170-1040C; Area/locality; Costa Rica subduction complex, North Pacific Ocean; DRILL; Drilling/drill rig; Event label; Joides Resolution; Lead-206/Lead-204 ratio; Lead-206/Lead-204 ratio, error; Lead-207/Lead-204 ratio; Lead-207/Lead-204 ratio, error; Lead-208/Lead-204 ratio; Lead-208/Lead-204 ratio, error; Leg170; Neodymium-143/Neodymium-144 ratio; Neodymium-143/Neodymium-144 ratio, error; Ocean Drilling Program; ODP; Sample code/label; Thermal Ionization Mass Spectrometry (TIMS); ε-Neodymium
    Type: Dataset
    Format: text/tab-separated-values, 33 data points
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  • 6
    Publication Date: 2024-01-09
    Keywords: 162-985A; Age model; Area/locality; Depth, bottom/max; Depth, composite; DEPTH, sediment/rock; Depth, top/min; Diameter; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Joides Resolution; Layer thickness; Leg162; Norwegian Sea; Ocean Drilling Program; ODP; Sample, optional label/labor no; Sample code/label; Standard deviation; Volcanic glass
    Type: Dataset
    Format: text/tab-separated-values, 73 data points
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  • 7
    Publication Date: 2024-01-09
    Keywords: 162-985B; Age model; Area/locality; Depth, bottom/max; Depth, composite; DEPTH, sediment/rock; Depth, top/min; Diameter; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Joides Resolution; Layer thickness; Leg162; Norwegian Sea; Ocean Drilling Program; ODP; Sample, optional label/labor no; Sample code/label; Standard deviation; Volcanic glass
    Type: Dataset
    Format: text/tab-separated-values, 137 data points
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  • 8
    Publication Date: 2024-01-09
    Keywords: 162-907B; Age, dated; Age, dated standard deviation; Age model; Area/locality; Depth, bottom/max; Depth, composite; DEPTH, sediment/rock; Depth, top/min; Diameter; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Iceland Sea; Joides Resolution; Layer thickness; Leg162; Ocean Drilling Program; ODP; Sample, optional label/labor no; Sample code/label; Standard deviation; Volcanic glass
    Type: Dataset
    Format: text/tab-separated-values, 55 data points
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  • 9
    Publication Date: 2024-01-09
    Keywords: 206-1256C; 206-1256D; 67-495; 67-499; Area/locality; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Event label; Glomar Challenger; Hafnium-176/Hafnium-177; Hafnium-176/Hafnium-177, error; Joides Resolution; LATITUDE; Lead-206/Lead-204 ratio; Lead-206/Lead-204 ratio, error; Lead-207/Lead-204 ratio; Lead-207/Lead-204 ratio, error; Lead-208/Lead-204 ratio; Lead-208/Lead-204 ratio, error; Leg206; Leg67; LONGITUDE; Neodymium-143/Neodymium-144 ratio; Neodymium-143/Neodymium-144 ratio, error; North Pacific/TRENCH; North Pacific Ocean; Ocean Drilling Program; ODP; POINT DISTANCE from start; Rock type; Sample type; Strontium-87/Strontium-86 ratio; Strontium-87/Strontium-86 ratio, error; δ18O; δ18O, standard deviation; ε-Hafnium; ε-Neodymium
    Type: Dataset
    Format: text/tab-separated-values, 1436 data points
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  • 10
    Publication Date: 2024-01-09
    Keywords: 206-1256C; 206-1256D; 67-495; 67-499; Aluminium oxide; Antimony; Area/locality; Barium; Barium/Lanthanum ratio; Barium/Thorium ratio; Caesium; Calcium oxide; Carbon dioxide; Cerium; Chromium; Cobalt; Copper; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Dysprosium; Elements, total; Erbium; Europium; Event label; Gadolinium; Gallium; Glomar Challenger; Hafnium; Holmium; ICP-MS, VG-Plasma-Quad 1; Infrared Photometer Rosemount CSA 5003; Iron oxide, Fe2O3; Joides Resolution; Lanthanum; Lanthanum/Ytterbium ratio; LATITUDE; Lead; Leg206; Leg67; LONGITUDE; Lutetium; Magnesium oxide; Manganese oxide; Molybdenum; Neodymium; Nickel; Niobium; North Pacific/TRENCH; North Pacific Ocean; Ocean Drilling Program; ODP; Phosphorus pentoxide; POINT DISTANCE from start; Potassium oxide; Praseodymium; Rock type; Rubidium; Samarium; Sample code/label; Sample type; Silicon dioxide; Sodium oxide; Strontium; Strontium/Cerium ratio; Tantalum; Terbium; Thallium; Thorium; Thulium; Tin; Titanium dioxide; Tungsten; Uranium; Uranium/Thorium ratio; Vanadium; Water in rock; X-ray fluorescence spectrometer (Philips PW1480); Ytterbium; Yttrium; Zinc; Zirconium; Zirconium/Hafnium ratio
    Type: Dataset
    Format: text/tab-separated-values, 5386 data points
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