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  • 1
    Electronic Resource
    Electronic Resource
    Deep roots of the Messinian salinity crisis (2003)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 422 (2003), S. 602-606 
    Details
    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
    URL: http://dx.doi.org/10.1038/nature01553
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    Paper (German National Licenses)
    Fulltext
  • 2
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    (Table S1) Nd-Pb isotope ratios of oceanic crust beneath Costa Rica
    PANGAEA
    Details
    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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    Geochemistry of volcanic rocks from the Hikurangi and Manihiki Plateaus
    PANGAEA
    In:  Supplement to: Hoernle, Kaj; Hauff, Folkmar; van den Bogaard, Paul; Werner, Reinhard; Mortimer, Nick; Geldmacher, Jörg; Garbe-Schönberg, Dieter; Davy, Bryan (2010): Age and geochemistry of volcanic rocks from the Hikurangi and Manihiki oceanic Plateaus. Geochimica et Cosmochimica Acta, 74(24), 7196-7219, https://doi.org/10.1016/j.gca.2010.09.030
    Details
    Publication Date: 2023-06-27
    Description: Here we present the first radiometric age data and a comprehensive geochemical data set (including major and trace element and Sr-Nd-Pb-Hf isotope ratios) for samples from the Hikurangi Plateau basement and seamounts on and adjacent to the plateau obtained during the R/V Sonne 168 cruise, in addition to age and geochemical data from DSDP Site 317 on the Manihiki Plateau. The 40Ar/39Ar age and geochemical data show that the Hikurangi basement lavas (118-96 Ma) have surprisingly similar major and trace element and isotopic characteristics to the Ontong Java Plateau lavas (ca. 120 and 90 Ma), primarily the Kwaimbaita-type composition, whereas the Manihiki DSDP Site 317 lavas (117 Ma) have similar compositions to the Singgalo lavas on the Ontong Java Plateau. Alkalic, incompatible-element-enriched seamount lavas (99-87 Ma and 67 Ma) on the Hikurangi Plateau and adjacent to it (Kiore Seamount), however, were derived from a distinct high time-integrated U/Pb (HIMU)-type mantle source. The seamount lavas are similar in composition to similar-aged alkalic volcanism on New Zealand, indicating a second wide-spread event from a distinct source beginning ca. 20 Ma after the plateau-forming event. Tholeiitic lavas from two Osbourn seamounts on the abyssal plain adjacent to the northeast Hikurangi Plateau margin have extremely depleted incompatible element compositions, but incompatible element characteristics similar to the Hikurangi and Ontong Java Plateau lavas and enriched isotopic compositions intermediate between normal mid-ocean-ridge basalt (N-MORB) and the plateau basement. These younger (~52 Ma) seamounts may have formed through remelting of mafic cumulate rocks associated with the plateau formation. The similarity in age and geochemistry of the Hikurangi, Ontong Java and Manihiki Plateaus suggest derivation from a common mantle source. We propose that the Greater Ontong Java Event, during which ?1% of the Earth's surface was covered with volcanism, resulted from a thermo-chemical superplume/dome that stalled at the transition zone, similar to but larger than the structure imaged presently beneath the South Pacific superswell. The later alkalic volcanism on the Hikurangi Plateau and the Zealandia micro-continent may have been part of a second large-scale volcanic event that may have also triggered the final breakup stage of Gondwana, which resulted in the separation of Zealandia fragments from West Antarctica.
    Keywords: 33-317A; Deep Sea Drilling Project; Dredge; DRG; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg33; SO168; SO168_1; SO168_12; SO168_21; SO168_25; SO168_26; SO168_3; SO168_32; SO168_33; SO168_34; SO168_35; SO168_36; SO168_38; SO168_39; SO168_40; SO168_43; SO168_47; SO168_49; SO168_50; SO168_9; Sonne; South Pacific/PLATEAU; ZEALANDIA
    Type: Dataset
    Format: application/zip, 5 datasets
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  • 4
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    (Table 2) Sr-Nd-Hf-Pb isotope ratios of volcanic rocks from Hikurangi and Manihiki Plateaus
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: 33-317A; AGE; Area/locality; Deep Sea Drilling Project; DEPTH, sediment/rock; Dredge; DRG; DRILL; Drilling/drill rig; DSDP; Event label; Glomar Challenger; Hafnium-176/Hafnium-177; Hafnium-176/Hafnium-177, error; Latitude of event; Latitude of event 2; 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; Leg33; Longitude of event; Longitude of event 2; Lutetium-176/Hafnium-177; Neodymium-143/Neodymium-144 ratio; Neodymium-143/Neodymium-144 ratio, error; Percentile 05; Rubidium/Strontium ratio; Samarium-147/Neodymium-144 ratio; Sample code/label; SO168; SO168_1; SO168_12; SO168_21; SO168_25; SO168_26; SO168_3; SO168_32; SO168_33; SO168_34; SO168_36; SO168_38; SO168_39; SO168_43; SO168_47; SO168_49; SO168_50; Sonne; South Pacific/PLATEAU; Strontium-87/Strontium-86 ratio; Strontium-87/Strontium-86 ratio, error; Thorium-232/Lead-204 ratio; Uranium-238/Lead-204 ratio; ZEALANDIA; ε-Hafnium; ε-Neodymium (T)
    Type: Dataset
    Format: text/tab-separated-values, 795 data points
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  • 5
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    (Table EA3) Major and trace element content of volcanic rocks from Hikurangi and Manihiki Plateaus (2010)
    PANGAEA
    Details
    Publication Date: 2023-07-10
    Keywords: 33-317A; Aluminium oxide; Area/locality; Barium; Caesium; Calcium oxide; Carbon dioxide; Cerium; Chromium; Cobalt; Copper; Deep Sea Drilling Project; DEPTH, sediment/rock; Dredge; DRG; DRILL; Drilling/drill rig; DSDP; Dysprosium; Elements, total; Erbium; Europium; Event label; Gadolinium; Gallium; Glomar Challenger; Hafnium; Holmium; Inductively coupled plasma - mass spectrometry (ICP-MS); Iron oxide, Fe2O3; Lanthanum; Latitude of event; Latitude of event 2; Lead; Leg33; Longitude of event; Longitude of event 2; Lutetium; Magnesium oxide; Manganese oxide; Neodymium; Nickel; Niobium; Phosphorus pentoxide; Potassium oxide; Praseodymium; Rubidium; Samarium; Sample code/label; Scandium; Silicon dioxide; SO168; SO168_12; SO168_21; SO168_25; SO168_26; SO168_32; SO168_33; SO168_34; SO168_35; SO168_36; SO168_38; SO168_39; SO168_40; SO168_43; SO168_47; SO168_49; SO168_50; SO168_9; Sodium oxide; Sonne; South Pacific/PLATEAU; Strontium; Tantalum; Terbium; Thorium; Thulium; Titanium dioxide; Uranium; Vanadium; Water in rock; X-ray fluorescence (XRF); Ytterbium; Yttrium; ZEALANDIA; Zinc; Zirconium
    Type: Dataset
    Format: text/tab-separated-values, 1656 data points
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  • 6
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    (Table 1) Age determination of volcanic rocks from Hikurangi and Manihiki Plateaus (2010)
    PANGAEA
    Details
    Publication Date: 2023-08-16
    Keywords: -; Age, 40Ar/39Ar Argon-Argon; Age, dated; Age, dated standard deviation; Area/locality; Crystals; DEPTH, sediment/rock; Dredge; DRG; Event label; Latitude of event; Latitude of event 2; Longitude of event; Longitude of event 2; Probability; Rock type; Sample code/label; Sample comment; Sample ID; SO168; SO168_12; SO168_34; SO168_38; Sonne; ZEALANDIA
    Type: Dataset
    Format: text/tab-separated-values, 55 data points
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  • 7
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    (Table EA2) Individual 40Ar/39Ar analysis of volcanic rocks from Hikurangi and Manihiki Plateaus (2010)
    PANGAEA
    Details
    Publication Date: 2023-08-16
    Keywords: -; 33-317A; Age, dated; Age, dated standard deviation; Argon-36/Argon-39; Argon-37/Argon-39; Argon-39; Argon-40; Argon-40/Argon-39; Calcium/Potassium ratio; Comment; Deep Sea Drilling Project; DEPTH, sediment/rock; Dredge; DRG; DRILL; Drilling/drill rig; DSDP; Event label; Glomar Challenger; Latitude of event; Latitude of event 2; Leg33; Longitude of event; Longitude of event 2; Number; Probability; Sample code/label; Sample comment; Sample mass; SO168; SO168_12; SO168_34; SO168_38; SO168_40; SO168_49; SO168_50; SO168_9; Sonne; South Pacific/PLATEAU; ZEALANDIA
    Type: Dataset
    Format: text/tab-separated-values, 3602 data points
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  • 8
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    (Table 1) Plateau ages of DSDP Hole 33-317A basalts and dredge samples (2010)
    PANGAEA
    Details
    Publication Date: 2023-08-16
    Keywords: -; 33-317A; Age, 40Ar/39Ar Argon-Argon; Age, dated; Age, dated standard deviation; Area/locality; Argon-39; Deep Sea Drilling Project; DEPTH, sediment/rock; Dredge; DRG; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Event label; Glomar Challenger; Latitude of event; Latitude of event 2; Leg33; Longitude of event; Longitude of event 2; Number; Probability; Rock type; Sample code/label; Sample comment; Sample ID; SO168; SO168_40; SO168_49; SO168_50; SO168_9; Sonne; South Pacific/PLATEAU; ZEALANDIA
    Type: Dataset
    Format: text/tab-separated-values, 128 data points
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  • 9
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    Geochemistry of oceanic crust beneath Costa Rica (2008)
    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
    Details
    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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  • 10
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    Magnetostratigraphy of ODP Hole 157-953C (Table 1) (2003)
    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
    Details
    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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