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    14C Tephrochronology with Different Fractions of Paleosol Humic Matter at Procida Island, Italy

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    Author
    Alessio, Marisa
    Allegri, Lucia
    Azzi, Carlo
    Calderoni, Gilberto
    Cortesi, Cesarina
    Improta, Salvatore
    Petrone, Vincenzo
    Issue Date
    1989-01-01
    Keywords
    Procida Island
    Paleosols
    tephrochronology
    humates
    Italy
    Southern Europe
    organic compounds
    organic materials
    Europe
    methods
    geochronology
    C 14
    carbon
    dates
    isotopes
    radioactive isotopes
    absolute age
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    Citation
    Alessio, M., Allegri, L., Azzi, C., Calderoni, G., Cortesi, C., Improta, S., & Petrone, V. (1989). 14C tephrochronology with different fractions of Paleosol humic matter at Procida Island, Italy. Radiocarbon, 31(3), 664-671.
    Publisher
    Department of Geosciences, The University of Arizona
    Journal
    Radiocarbon
    Description
    From the 13th International Radiocarbon Conference held in Dubrovnik, Yugoslavia, June 20-25, 1988.
    URI
    http://hdl.handle.net/10150/652895
    DOI
    10.1017/S0033822200012261
    Additional Links
    http://radiocarbon.webhost.uits.arizona.edu/
    Abstract
    14C apparent ages along with delta-13C values for three different fractions of humic matter (HM) isolated from a suite of four paleosols (PAs) interbedded within tephra are reported. The dated HM fractions were: 1) HA, the easily released humic acids; 2) HAtot, the bulk of humic acids; 3) RES, the insoluble HM. The 14C sequence dated from 13,000-25,000 BP, in agreement with stratigraphy and previous data. Age differences up to 2540 +/- 430 were statistically significant among fractions; their order of magnitude being independent from C content and depth. All the PAs showed a common pattern of among-fraction age variation, 14C agingltrending from RES to HA101 through HA. As the HM fractions exhibited quite comparable delta-13C values (delta-13C = -25.4 +/- 0.2 per mil), it is inferred that the primitive organic matter (OM) input to PAs was dominantly supplied by vegetation of C-3 photosynthetic pathway which underwent complete decomposition during diagenesis.
    Type
    Proceedings
    text
    Language
    en
    ISSN
    0033-8222
    ae974a485f413a2113503eed53cd6c53
    10.1017/S0033822200012261
    Scopus Count
    Collections
    Radiocarbon, Volume 31, Number 3 (1989)

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