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  • 1
    Electronic Resource
    Electronic Resource
    Oldest rocks in Europe (1994)
    [s.l.] : Nature Publishing Group
    Nature 370 (1994), S. 505-506 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] How did the ancient continents differ from those of today, and how were they formed? These are key questions facing geologists studying the Archaean period, which spanned almost the first half of Earth history, ending 2.5 billion years (Gyr) ago. Answers can in principle be sought by examining old ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/370505a0
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Young formation age of a mantle plume source (1993)
    [s.l.] : Nature Publishing Group
    Nature 362 (1993), S. 715-721 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The Ninetyeast Ridge hotspot track displays strontium, neodymium and lead isotope variations over time that reflect simple radioactive decay in the plume source rather than a change in the mantle components present. The lead isotope variations indicate that the time spent by the plume source in a ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/362715a0
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Discussion of “Temporal evolution of the Kerguelen plume: geochemical evidence from ∼38 to 82 Ma lavas forming the Ninetyeast Ridge” by F.A. Frey and D. Weis (1996)
    Springer
    Contributions to mineralogy and petrology 124 (1996), S. 98-103 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004100050177
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    Paper (German National Licenses)
    Fulltext
  • 4
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    Lead isotopes inthe Eastern Equatorial Pacific (2014)
    PANGAEA
    In:  Supplement to: Pichat, Sylvain; Abouchami, Wafa; Galer, Stephen J G (2014): Lead isotopes in the Eastern Equatorial Pacific record Quaternary migration of the South Westerlies. Earth and Planetary Science Letters, 388, 293-305, https://doi.org/10.1016/j.epsl.2013.11.035
    Details
    Publication Date: 2023-07-05
    Description: The influence of atmospheric dust on climate and biogeochemical cycles in the oceans is well understood but poorly quantified. Glacial atmospheric dust loads were generally greater than those during the Holocene, as shown, for example, by the covariation of dust fluxes in the Equatorial Pacific and Antarctic ice cores. Nevertheless, it remains unclear whether these increases in dust flux were associated with changes in sources of dust, which would in turn suggest variations in wind patterns, climate or paleo-environment. Such questions can be answered using radiogenic isotope tracers of dust provenance. Here, we present a 160-kyr high-precision lead isotope time-series of dust input to the Eastern Equatorial Pacific (EEP) from core ODP Leg 138, Site 849 (0°11.59' N, 110°31.18' W). The Pb isotope record, combined with Nd isotope data, rules out contributions from Northern Hemisphere dust sources, north of the Intertropical Convergence Zone, such as Asia or North Africa/Sahara; similarly, eolian sources in Australia, Central America, the Northern Andes and Patagonia appear insignificant based upon the radiogenic isotope data. Fluctuations in Pb isotope ratios throughout the last 160 kyr show, instead, that South America remained the prevailing source of dusts to the EEP. There are two distinct South American Pb isotope end-members, constrained to be located in the south Central Volcanic Zone (CVZ, 22° S - 27.5° S) and the South Volcanic Zone (SVZ, 33° S - 43° S), with the former most likely originating in the Atacama Desert. Dust availability in the SVZ appears to be related to the weathering of volcanic deposits and the development of ash-derived Andosols, and influenced by local factors that might include vegetation cover. Variations in the dust fluxes from the two sources are in phase with both the dust flux and temperature records from Antarctican ice cores. We show that the forcing of dust provenance over time in the EEP overall is influenced by high-southerly-latitude climate conditions, leading to changes in the latitudinal position and strength of the South Westerlies as well as the coastal winds that blow northward along the Chilean margin. The net result is a modulation of dust emission from the Atacama Desert and the SVZ via a northward migration of the South Westerlies during cold periods and southward retreat during glacial terminations.
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 5
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    Radiogenic Sr, Nd and Pb isotope compositions and REE concentrations for North African soil samples from the literature (2022)
    PANGAEA
    Details
    Publication Date: 2023-09-11
    Keywords: Area/locality; Atlantic dust transport; Cerium; Dysprosium; Erbium; Europium; Europium anomaly; Event label; From literature; Gadolinium; Holmium; isotope fingerprinting; Lanthanum; Latitude of event; Lead-206/Lead-204 ratio; Lead-206/Lead-204 ratio, standard error; Lead-207/Lead-204 ratio; Lead-207/Lead-204 ratio, standard error; Lead-208/Lead-204 ratio; Lead-208/Lead-204 ratio, standard error; Location; Longitude of event; Lutetium; mineral dust provenance; Neodymium; North African soils; Praseodymium; PSA_BD_34BOT25; PSA_BD_BEG1; PSA_BD_BEG2; PSA_BD_BEG3; PSA_BD_Bod_43.5; PSA_BD_Bod_44; PSA_BD_Bod_44B; PSA_BD_Bod_44C; PSA_BD_Bod_44D; PSA_BD_Bod_51; PSA_BD_Bod_54A; PSA_BD_BOD1; PSA_BD_Bod54B; PSA_BD_BODI; PSA_BD_BODU; PSA_BD_CH17; PSA_BD_CH34; PSA_BD_CH38; PSA_BD_CH39; PSA_BD_CH50; PSA_BD_CH56; PSA_BD_CH62; PSA_BD_CH75; PSA_BD_EN1; PSA_BD_EN12; PSA_BD_EN13; PSA_BD_EN14; PSA_BD_EN15; PSA_BD_EN2; PSA_BD_EN3; PSA_BD_EN4; PSA_BD_EN5; PSA_BD_EN6; PSA_BD_EN7; PSA_BD_EN8; PSA_BD_EN9; PSA_BD_Faya_Largeau_bulk; PSA_BD_Faya_Largeau_residue; PSA_BD_Harmattan_bulk; PSA_BD_Harmattan_residue; PSA_BD_M_bulk; PSA_BD_M_residue; PSA_BD_NPS_bulk; PSA_BD_NPS_residue; PSA_BD_R_bulk; PSA_BD_RIVER1; PSA_BD_RIVER2; PSA_LAM_Lybia; PSA_LAM_N05; PSA_LAM_N19; PSA_LAM_N26; PSA_LAM_N35; PSA_LAM_N36; PSA_LAM_Tunisia; PSA_LE_Assouan_bank; PSA_LE_Assouan_island; PSA_LE_EGP11A; PSA_LE_EGP12A; PSA_LE_EGP13A; PSA_LE_EGP14A; PSA_LE_EGP15A; PSA_LE_EGP16A; PSA_LE_EGP18A; PSA_LE_EGP20A; PSA_LE_EGP21A; PSA_LE_EGP27A; PSA_LE_EGP28A; PSA_LE_EGP29A; PSA_LE_EGP2A; PSA_LE_Egypt#1; PSA_LE_Egypt#2; PSA_LE_LIB1; PSA_LE_SD1; PSA_LE_SD10; PSA_LE_SD2; PSA_LE_SD3; PSA_LE_SD4; PSA_LE_SD6; PSA_LE_SD7; PSA_LE_SD8; PSA_LE_SD9; PSA_Ma_Atar; PSA_Ma_Elm; PSA_Ma_Erg; PSA_Ma_Est; PSA_Ma_Foum; PSA_Ma_Kay; PSA_Ma_Kif; PSA_Ma_Mauritania; PSA_Ma_Nou; PSA_Ma_Smara; PSA_Ma_Tamba; PSA_Ma_Tich; PSA_Ma_Wouerat; PSA_MC_AGF; PSA_MC_SAHEL10A; PSA_MC_SAHEL11A; PSA_MC_SAHEL12A; PSA_MC_SAHEL13A; PSA_MC_SAHEL14A; PSA_MC_SAHEL15A; PSA_MC_SAHEL17A; PSA_MC_SAHEL19A; PSA_MC_SAHEL1A; PSA_MC_SAHEL1A_1; PSA_MC_SAHEL1A_2; PSA_MC_SAHEL2A; PSA_MC_SAHEL3A; PSA_MC_SAHEL4A; PSA_MC_SAHEL6A; PSA_MC_SAHEL7A; PSA_MC_SAHEL8A; PSA_MC_SAHEL9A; PSA_Non_rep_LOME10A; PSA_Non_rep_LOME14A; PSA_Non_rep_LOME18A; PSA_Non_rep_LOME1A; PSA_Non_rep_LOME24A; PSA_Non_rep_LOME2A; PSA_Non_rep_LOME4A; PSA_Non_rep_LOME5A; PSA_Non_rep_LOME8A; PSA_WAC_Akjoujt; PSA_WAC_Elra; PSA_WAC_EM; PSA_WAC_Foun; PSA_WAC_IR; PSA_WAC_JB; PSA_WAC_Jraif; PSA_WAC_Lab; PSA_WAC_Mali_Kati; PSA_WAC_MHAMID18; PSA_WAC_MHAMID19; PSA_WAC_MORO10A; PSA_WAC_MORO14A; PSA_WAC_MORO15A; PSA_WAC_MORO16A; PSA_WAC_MORO18A; PSA_WAC_MORO1A; PSA_WAC_MORO20A; PSA_WAC_MORO21A; PSA_WAC_MORO22A; PSA_WAC_MORO23A; PSA_WAC_MORO25B; PSA_WAC_MORO26A; PSA_WAC_MORO27A; PSA_WAC_MORO28A; PSA_WAC_MORO29; PSA_WAC_MORO3A; PSA_WAC_MORO5A; PSA_WAC_MORO6A; PSA_WAC_MORO7A; PSA_WAC_MORO8A; PSA_WAC_Ouj; PSA_WAC_PNBA; PSA_WAC_Ro; PSA_WAC_Sen_Riv; PSA_WAC_Til; PSA_WAC_TL; PSA_WAC_ZAG1; PSA_WAC_ZAG2; rare-earth element pattern; Reference/source; Sahara-Sahel region; Samarium; Sample ID; Sample type; SOILS; Soil sample; Sr-Nd-Pb radiogenic isotopes; Strontium-87/Strontium-86 ratio; Strontium-87/Strontium-86 ratio, standard error; Terbium; Thulium; Ytterbium; ε-Neodymium; ε-Neodymium, standard error
    Type: Dataset
    Format: text/tab-separated-values, 1813 data points
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    DATA PANGAEA
  • 6
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    Elemental composition and radiogenic isotopes of North African soils to characterize Saharan and Sahelian dust sources (2022)
    PANGAEA
    Details
    Publication Date: 2023-08-22
    Description: Fifty-nine bulk soil samples were from a collection known as the “Mainz Sandbank”, comprising samples from across the Sahara-Sahel region collected on multiple field trips since 1970. Elemental and radiogenic isotope analyses were performed on the fine silt-clay fraction of the soil (〈 20 µm). Major and trace element composition were obtained using an Agilent 7900 quadrupole ICP-MS instrument with 2.5% HNO3 as eluent. International reference materials (basalts BHVO-2 and BCR-2) were analyzed during each measurement session, and the data agree within ±10% of the recommended reference concentrations (Jochum et al., 2016). Strontium, Nd, and Pb isotope compositions were measured by thermal ionization mass spectrometry (TIMS Triton, ThermoFisher). Accuracy and reproducibility were determined with replicate measurements of SRM 987 and La Jolla standards, respectively. The Pb isotope data were corrected offline for instrumental mass bias using a double (207Pb-204Pb) or triple (204Pb-206Pb-207Pb) spike technique. Accuracy and reproducibility were determined using multiple analyses of the NIST SRM-981 standard. In addition, four soil samples with distinct bedrock ages and soil types were selected from Mali and Morocco to test the effect of grain size and of selective HBr leaching (to remove anthropogenic Pb) on radiogenic isotope signatures. HBr leaching experiments were also performed on aerosols collected along the sahelian Harmattan road. Finally, and in addition to this new dataset, a summary of available radiogenic isotope signatures (Sr-Nd-Pb) from North African soils in the literature is provided for future studies. This dataset is a support of the article Characterization of Saharan and Sahelian dust sources based on geochemical and radiogenic isotope signatures published by Guinoiseau et al., 2022 (doi:10.1016/j.quascirev.2022.107729).
    Keywords: Atlantic dust transport; isotope fingerprinting; mineral dust provenance; North African soils; rare-earth element pattern; Sr-Nd-Pb radiogenic isotopes
    Type: Dataset
    Format: application/zip, 6 datasets
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    DATA PANGAEA
  • 7
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    North African soil sample locations and radiogenic isotope compositions in deflatable soil fractions from North Africa (2022)
    PANGAEA
    Details
    Publication Date: 2023-08-22
    Keywords: Area/locality; Atlantic dust transport; Europium anomaly; Event label; isotope fingerprinting; Latitude of event; Lead-206/Lead-204 ratio; Lead-206/Lead-204 ratio, standard error; Lead-207/Lead-204 ratio; Lead-207/Lead-204 ratio, standard error; Lead-208/Lead-204 ratio; Lead-208/Lead-204 ratio, standard error; Location; Longitude of event; mineral dust provenance; Neodymium-143/Neodymium-144 ratio; Neodymium-143/Neodymium-144 ratio, standard error; North African soils; Outl_CH15; Outl_CH2; Outl_CH34; Outl_CH39; Outl_SC-139; PSA_BD_80BOT; PSA_BD_CH10; PSA_BD_CH19; PSA_BD_CH20; PSA_BD_CH26; PSA_BD_CH26R; PSA_BD_CH50; PSA_BD_CH56; PSA_BD_CH62; PSA_BD_CH9; PSA_BD_SC-127; PSA_BD_SC-128; PSA_BD_SC-41; PSA_LAM_SC-105; PSA_LAM_SC-113; PSA_LAM_SC-21; PSA_LAM_SC-24; PSA_LAM_SC-5; PSA_LAM_SC-56; PSA_LAM_SC-7; PSA_LAM_SC-71; PSA_LAM_SC-72; PSA_LAM_SC-73; PSA_LAM_SC-74; PSA_LAM_SC-75; PSA_LAM_SC-8; PSA_LE_SC-100; PSA_LE_SC-101; PSA_LE_SC-31; PSA_LE_SC-31R; PSA_LE_SC-32; PSA_LE_SC-32R1; PSA_LE_SC-32R2; PSA_LE_SC-32R3; PSA_LE_SC-99; PSA_LE_SC-99R; PSA_MC_SC-62; PSA_MC_SC-62R; PSA_MC_SC-63; PSA_Non_rep_SC-106; PSA_Non_rep_SC-107; PSA_Non_rep_SC-108; PSA_Non_rep_SC-68; PSA_Non_rep_SC-68R; PSA_Non_rep_SC-97; PSA_Non_rep_SC-98; PSA_Unassign_SC-65; PSA_WAC_SC-104; PSA_WAC_SC-104R; PSA_WAC_SC-114; PSA_WAC_SC-121; PSA_WAC_SC-125; PSA_WAC_SC-134; PSA_WAC_SC-136; PSA_WAC_SC-137; PSA_WAC_SC-146; PSA_WAC_SC-147; PSA_WAC_SC-49; PSA_WAC_SC-50; PSA_WAC_SC-51; rare-earth element pattern; Sahara-Sahel region; Sample ID; Sampling date; Size fraction 〈 0.020 mm; SOILS; Soil sample; Sr-Nd-Pb radiogenic isotopes; Strontium-87/Strontium-86 ratio; Strontium-87/Strontium-86 ratio, standard error; Thermal Ionization Mass Spectrometry (TIMS); Year of observation; ε-Neodymium; ε-Neodymium, standard error
    Type: Dataset
    Format: text/tab-separated-values, 1092 data points
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  • 8
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    Chemical compositions of international reference materials (basalts BHVO-2 and BCR-2) analysed as quality control standards (2022)
    PANGAEA
    Details
    Publication Date: 2023-08-22
    Keywords: Aluminium; Aluminium, standard deviation; Arsenic; Arsenic, standard deviation; Atlantic dust transport; Barium; Barium, standard deviation; Beryllium; Beryllium, standard deviation; Bismuth; Bismuth, standard deviation; Caesium; Caesium, standard deviation; Calcium; Calcium, standard deviation; Cerium; Cerium, standard deviation; Chromium; Chromium, standard deviation; Cobalt; Cobalt, standard deviation; Copper; Copper, standard deviation; Dysprosium; Dysprosium, standard deviation; Erbium; Europium; Europium, standard deviation; Gadolinium; Gadolinium, standard deviation; Gallium; Gallium, standard deviation; Hafnium; Hafnium, standard deviation; Holmium; Holmium, standard deviation; Inductively coupled plasma - mass spectrometry (ICP-MS); Iron; Iron, standard deviation; isotope fingerprinting; Lanthanum; Lanthanum, standard deviation; Lead; Lead, standard deviation; Lutetium; Lutetium, standard deviation; Machine stiffness, standard deviation; Magnesium; Magnesium, standard deviation; Manganese; Manganese, standard deviation; mineral dust provenance; Molybdenum; Molybdenum, standard deviation; Neodymium; Neodymium, standard deviation; Nickel; Nickel, standard deviation; Niobium; Niobium, standard deviation; North African soils; Phosphorus; Phosphorus, standard deviation; Potassium; Praseodymium; Praseodymium, standard deviation; rare-earth element pattern; Reduced modulus, standard deviation; Rubidium; Rubidium, standard deviation; Samarium; Samarium, standard deviation; Scandium; Scandium, standard deviation; Sedimentation rate, standard deviation; Sodium; Sodium, standard deviation; Sr-Nd-Pb radiogenic isotopes; Standard; Strontium; Terbium; Terbium, standard deviation; Thallium; Thermoluminescence, standard deviation; Thorium; Thorium, standard deviation; Thulium; Thulium, standard deviation; Tin; Tin, standard deviation; Uranium; Uranium, standard deviation; Vanadium; Vanadium, standard deviation; Ytterbium; Ytterbium, standard deviation; Yttrium; Yttrium, standard deviation; Zinc; Zinc, standard deviation; Zirconium; Zirconium, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 387 data points
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    DATA PANGAEA
  • 9
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    Sr, Nd, and Pb isotope compositions in different grain size fractions of North African soils (2022)
    PANGAEA
    Details
    Publication Date: 2023-08-22
    Keywords: Atlantic dust transport; Event label; Identification; isotope fingerprinting; Latitude of event; Lead-206/Lead-204 ratio; Lead-206/Lead-204 ratio, standard error; Lead-207/Lead-204 ratio; Lead-207/Lead-204 ratio, standard error; Lead-208/Lead-204 ratio; Lead-208/Lead-204 ratio, standard error; Location; Longitude of event; Mali_C-62; Mali_C-63; Mali_FC-62; Mali_FC-63; Mali_SC-62; Mali_SC-63; Mali_St-62; Mali_St-63; mineral dust provenance; Morocco_C-136; Morocco_C-147; Morocco_FC-136; Morocco_FC-147; Morocco_SC-136; Morocco_SC-147; Morocco_St-136; Morocco_St-147; North African soils; rare-earth element pattern; Sahara-Sahel region; SOILS; Soil sample; Sr-Nd-Pb radiogenic isotopes; Strontium-87/Strontium-86 ratio; Strontium-87/Strontium-86 ratio, standard error; Thermal Ionization Mass Spectrometry (TIMS); Year of observation; ε-Neodymium; ε-Neodymium, standard error
    Type: Dataset
    Format: text/tab-separated-values, 206 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 10
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    Chemical compositions of deflatable soil fractions from North Africa (2022)
    PANGAEA
    Details
    Publication Date: 2023-08-22
    Keywords: Aluminium; Area/locality; Arsenic; Atlantic dust transport; Barium; Beryllium; Bismuth; Caesium; Calcium; Cerium; Chromium; Cobalt; Copper; Dysprosium; Erbium; Europium; Event label; Gadolinium; Gallium; Hafnium; Holmium; Iron; isotope fingerprinting; Lanthanum; Latitude of event; Lead; Location; Longitude of event; Lutetium; Magnesium; Manganese; mineral dust provenance; Molybdenum; Neodymium; Nickel; Niobium; North African soils; Outl_SC-139; Phosphorus; Potassium; Praseodymium; PSA_BD_SC-127; PSA_BD_SC-128; PSA_BD_SC-41; PSA_LAM_SC-105; PSA_LAM_SC-113; PSA_LAM_SC-21; PSA_LAM_SC-24; PSA_LAM_SC-5; PSA_LAM_SC-56; PSA_LAM_SC-7; PSA_LAM_SC-71; PSA_LAM_SC-72; PSA_LAM_SC-73; PSA_LAM_SC-74; PSA_LAM_SC-75; PSA_LAM_SC-8; PSA_LE_SC-100; PSA_LE_SC-101; PSA_LE_SC-31; PSA_LE_SC-32; PSA_LE_SC-99; PSA_MC_SC-62; PSA_MC_SC-63; PSA_Non_rep_SC-106; PSA_Non_rep_SC-107; PSA_Non_rep_SC-108; PSA_Non_rep_SC-68; PSA_Non_rep_SC-97; PSA_Non_rep_SC-98; PSA_Unassign_SC-65; PSA_WAC_SC-104; PSA_WAC_SC-114; PSA_WAC_SC-121; PSA_WAC_SC-125; PSA_WAC_SC-134; PSA_WAC_SC-136; PSA_WAC_SC-137; PSA_WAC_SC-146; PSA_WAC_SC-147; PSA_WAC_SC-49; PSA_WAC_SC-50; PSA_WAC_SC-51; rare-earth element pattern; Rubidium; Sahara-Sahel region; Samarium; Sample ID; Scandium; Sodium; SOILS; Soil sample; Sr-Nd-Pb radiogenic isotopes; Strontium; Terbium; Thallium; Thorium; Thulium; Tin; Titanium; Uranium; Vanadium; Ytterbium; Yttrium; Zinc; Zirconium
    Type: Dataset
    Format: text/tab-separated-values, 2190 data points
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    DATA PANGAEA
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