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  • Inorganic Chemistry  (66)
  • Organic Chemistry  (13)
  • 550 - Earth sciences  (2)
  • 05. General::05.02. Data dissemination::05.02.01. Geochemical data  (1)
  • Brassicaceae
  • Juniperus
  • R/V Vereshchagin
  • pollen analytical standard techniques
  • 1
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    Processes and timescales of magma evolution prior to the Campanian Ignimbrite eruption (Campi Flegrei, Italy) (2012)
    Elsevier Science Limited
    Details
    Publication Date: 2021-06-16
    Description: The Campi Flegrei caldera collapsed 39 ka in the Neapolitan area (southern Italy) after the Campanian Ignimbrite eruption. This eruption, recognized as the largest and the most cataclysmic volcanic event in the Mediterranean area over the past 200 ka, extruded not less than 300 km3 of trachytic magma. Controversy exists over the timescales required to assemble a such large volume of silicic melt and thus whether large magmatic reservoirs can actually persist below active volcanic systems over prolonged periods of time. Uranium-series analyses have been performed on Campanian Ignimbrite whole-rocks, glass matrixes and separated minerals, and the obtained results have been interpreted in combination with data on Sr, Nd, Pb isotopes from literature. The compositionally most evolved sample which is most radiogenic with respect to Sr isotopes records a reference age of 71 ka. By contrast, U-Th internal isochrones of the three compositionally least evolved samples give identical initial Th isotope ratios and yield consistent ages predating the eruption by up to 6.4 ka. The highest Pb and Nd isotopic ratios and 230Th/232Th activity ratios together with the oldest reference age of the most evolved samples suggest the existence of a resident magma body possibly related to a magmatic system that is known to have fed earlier magmatic activity in the Campi Flegrei area. Conversely, the younger age of the least evolved and least radiogenic magma dates the crystallization/differentiation event of a chemically and isotopically new magma batch entering the reservoir of the resident magma some few thousand years before the cataclysmic eruption. Therefore, the time preceding this large caldera-forming eruption during which the large volume of Campanian Ignimbrite magma assembled and mixed is 6.4 ± 2.1 ka.
    Description: This study benefited from the financial support of the 5th Framework Programme of the European Union within the ERUPT project.
    Description: Published
    Description: 217-228
    Description: 3.5. Geologia e storia dei vulcani ed evoluzione dei magmi
    Description: JCR Journal
    Description: restricted
    Keywords: U-Th isotopes ; Campanian Ignimbrite ; 05. General::05.02. Data dissemination::05.02.01. Geochemical data
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 2
    Electronic Resource
    Electronic Resource
    Die Herstellung schutzkolloidfreier, gleichteiliger Silberhydrosole. II (1928)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 169 (1928), S. 140-150 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die für die Darstellung von gleichteiligen Silberhydrosolen besten Mengenverhältnisse werden zusammengestellt für das Arbeiten mit 0,001% iger Silberoxydlösung.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19281690111
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  • 3
    Electronic Resource
    Electronic Resource
    Vergleich der aus Schmelze und Lösung gewonnenen intermetallischen Verbindung AuCd3 (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 209 (1932), S. 325-327 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Der beim Eintauchen von metallischem Cadmium in eine sehr verdünnte Lösung von Goldschlorid entstehende Niederschlag ist nicht nur in seiner Zusammensetzung, sondern auch in seiner röntgenographisch verglichenen Struktur identisch mit der intermetallischen, aus der Schmelze entstandenen Verbindung AuCd3.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19322090316
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  • 4
    Electronic Resource
    Electronic Resource
    Ungeschützte gleichteilige Silberhydrosole. III (1928)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 173 (1928), S. 27-44 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die bereits früher berichtete Beobachtung, daß die Reduktion von silberhaltigen Reduktionsgemischen ohne Verwendung von Gold-oder Silberkeimen durch Hydrazinhydrat je nach der Menge des dabei anwesenden Natriumcarbonats abgestufte Silbersole zu liefern vermag, wird erweitert.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19281730104
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  • 5
    Electronic Resource
    Electronic Resource
    Beweglichkeit der Teilchen in Goldhydrosolen (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 148 (1925), S. 382-390 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. An Goldhydrosolen, die durch Reduktion gewonnen waren, sind die Beweglichkeiten der Goldteilchen im elektrischen Potentialgefälle unabhängig von dem Zerteilungsgrad und der Art der Darstellung.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19251480136
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  • 6
    Electronic Resource
    Electronic Resource
    Das elektrokinetische Potential des Goldes in sehr verdünnten Elektrolytlösungen (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 181 (1929), S. 379-384 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Abhängigkeit des elektrokinetischen Potentials des Goldes von der Konzentration wird in sehr verdünnten Lösungen von Elektrolyten (10-8-10-5 n.) verfolgt.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291810135
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  • 7
    Electronic Resource
    Electronic Resource
    Die Herstellung schutzkolloidfreier, gleichteiliger Silberhydrosole I (1927)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 164 (1927), S. 409-419 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Im Gegensatz zu den bekannten Silberhydrosolen mit vielfarbigen Submikronen kann man auch solche mit gleichfarbigen Teilchen herstellen und damit ähnliche Verhältnisse erreichen, wie bei kolloidem Gold.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19271640137
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  • 8
    Electronic Resource
    Electronic Resource
    Synthese des Indigos mittelst Phenylglycin (1890)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 42 (1890), S. 520-520 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.18900420148
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  • 9
    Electronic Resource
    Electronic Resource
    Zur Indigodarstellung mittelst Phenylglycin (1890)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 43 (1890), S. 111-112 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.18900430110
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  • 10
    Electronic Resource
    Electronic Resource
    Carotenoids of Rhizobia. I. New Carotenoids from Rhizobium lupini (1977)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 60 (1977), S. 254-258 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The main pigments of Rhizobium lupini were 2,3,2′,3′-di-trans-tetrahydroxy-β,β-caroten-4-one and 2,3,2′,3′-di-trans-tetrahydroxy-β,β-carotene. As minor components 7,8,7′,8′-tetrahydro-ψ, ψ-carotene (ζ-carotene), β, β-carotene (β-carotene), and tentatively, a 2,3,2′(or 3′)-trihydroxy-β, β-caroten-4-one and a 2,3,2′(or 3′)-trihydroxy-β, β-carotene were identified.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19770600131
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