Cresta, S. and Goy 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, 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
Official URL: http://www.episodes.co.in/
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).
|Uncontrolled Keywords:||Toarcian-Aalenian Boundary; Lower-Middle Jurassic|
|Subjects:||Sciences > Geology > Stratigraphic geology|
|Deposited On:||10 Oct 2012 11:25|
|Last Modified:||07 Feb 2014 09:33|
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