Magnetostratigraphy and biostratigraphy of the Middle Triassic Margon section (Southern Alps, Italy) (Articolo in rivista)

Type
Label
  • Magnetostratigraphy and biostratigraphy of the Middle Triassic Margon section (Southern Alps, Italy) (Articolo in rivista) (literal)
Anno
  • 2001-01-01T00:00:00+01:00 (literal)
Alternative label
  • Gialanella P.R., Heller F., Mietto P., Incoronato A., De Zanche V., Gianolla P., Roghi G. (2001)
    Magnetostratigraphy and biostratigraphy of the Middle Triassic Margon section (Southern Alps, Italy)
    in Earth and planetary science letters
    (literal)
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  • Gialanella P.R., Heller F., Mietto P., Incoronato A., De Zanche V., Gianolla P., Roghi G. (literal)
Pagina inizio
  • 17 (literal)
Pagina fine
  • 25 (literal)
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  • This study belongs to a series of such studies directed at redefining the chrono-stratigraphic scale of the Anisian, Ladinian and Carnian stages. The results have shed light on the problematic correlation between the different biostratigraphic scales. Earth and Planetary Science Letters is a prestigious international journal for publishing papers on magnetostratigraphy. (literal)
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  • 187 (literal)
Rivista
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  • Impact Factor 2,700 (literal)
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  • A magnetostratigraphic study has been performed on the paleontologically well constrained pelagic Middle Triassic (Lower/Upper Ladinian boundary) section at Margon (Trento, Southern Alps, Italy). Rock magnetic investigations indicate the presence of both high and low coercivity minerals. Specimens subjected to progressive thermal demagnetization procedures show that nearly all of them exhibit a low temperature magnetization component, parallel to the present-day field before bedding correction, and a high temperature one, characterized by either positive or negative and opposite polarity, considered as the characteristic Triassic magnetization. Comparison of the Margon magnetic polarity zonation with those of two coeval sections poses some problems when ammonoid- and conodont-based stratigraphies have to be correlated. However, good correlation has been obtained for the recognized Middle Triassic ammonoid biozones in the Tethys realm. Valuable data for the construction of a standard magnetostratigraphic and paleontological scale have been derived from the results from the Margon section. (literal)
Note
  • ISI Web of Science (WOS) (literal)
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  • P.R.Gialanella a), F.Heller b), P.Mietto c), A.Incoronato a), V.De Zanche c), P.Gianolla c), G.Roghi d). a) Dip.Scienze Terra, Università, Largo S. Marcellino 10,Napoli b) Dept.Geophys., ETH Hönggerberg,Zürich c)Dip.Geol. Paleont. Geof., Università, via Giotto 1, Padova d) CNR-IGC Sez. Padova, Corso Garibaldi, Padova. (literal)
Titolo
  • Magnetostratigraphy and biostratigraphy of the Middle Triassic Margon section (Southern Alps, Italy) (literal)
Abstract
  • A magnetostratigraphic study has been performed on the paleontologically well constrained pelagic Middle Triassic (Lower/Upper Ladinian boundary) section at Margon (Trento, Southern Alps, Italy). Rock magnetic investigations indicate the presence of both high and low coercivity minerals. Specimens subjected to progressive thermal demagnetization procedures show that nearly all of them exhibit a low temperature magnetization component, parallel to the present-day field before bedding correction, and a high temperature one, characterized by either positive or negative and opposite polarity, considered as the characteristic Triassic magnetization. Comparison of the Margon magnetic polarity zonation with those of two coeval sections poses some problems when ammonoid- and conodont-based stratigraphies have to be correlated. However, a good correlation has been obtained for the recognized Middle Triassic ammonoid biozones in the Tethys realm. Valuable data for the construction of a standard magnetostratigraphic and paleontological scale have been provided by the results from the Margon section. (literal)
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