The Global Boundary Stratotype Section and Point (GSSP) of the Toarcian-Aalenian Boundary (Lower-Middle Jurassic)



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Cresta, S. and Goy, Antonio and Ureta Gil, María Soledad and Arias Fernández, María del Carmen and Barrón López, Eduardo and Bernard García, Julio and Canales Fernández, María Luisa and García Joral, Fernando and García Romero, Emilia and Gialanella, P.R. and Gómez Fernández, Juan José and González, J.A. and Herrero Matesanz, Concepción and Martínez Gutiérrez, Gemma and Osete López, María Luisa and Perilli, Nicola and Villalaín, J.J. (2001) The Global Boundary Stratotype Section and Point (GSSP) of the Toarcian-Aalenian Boundary (Lower-Middle Jurassic). Episodes, 24 (3). pp. 166-175. ISSN 0705-3797

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The Global Boundary Stratotype Section and Point
(GSSP) for the Aalenian Stage, formally defined at the
base of bed FZ107 in the Fuentelsaz section, Castilian
Branch of the Iberian Range (Spain), has been ratified
by the IUGS. Multidisciplinary biostratigraphical data,
based on ammonites, brachiopods, ostracods, bivalves,
foraminifera, calcareous nannofossils assemblages and
palynomorphs, assure worldwide correlations; magnetostratigraphic
data increase this correlation power.
The position of the boundary coincides with the first
occurrence of the ammonite assemblage characterized
by Leioceras opalinum and Leioceras lineatum and corresponds
with a normal polarity interval correlated with
the up-to-date Jurassic magnetic polarity time scale
(Gradstein and others, 1994; Ogg, 1995).

Item Type:Article
Uncontrolled Keywords:Toarcian-Aalenian Boundary; Lower-Middle Jurassic
Subjects:Sciences > Geology > Stratigraphic geology
ID Code:16664
Deposited On:10 Oct 2012 11:25
Last Modified:11 Dec 2018 08:42

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