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Closed Access item Silurian graptolite biostratigraphy of the Galicia - Tras-os-Montes Zone (Spain and Portugal)

Authors:Piçarra, José Manuel
Gutiérrez-Marco, J. C.
Sá, Artur A.
Meireles, Carlos
González-Clavijo, E.
Keywords:Silurian, Graptolites, Stratigraphy, Palaeogeography, Galicia, Trás-os-Montes zone, NW Iberian Peninsula
Issue Date:Jun-2006
Publisher:The geological Society of Sweden
Citation:GFF -Uppsala- 128(2): 185-188 (2006)
Abstract:Revision and reappraisal of Silurian graptolite data occurring within the Galicia – Trás-os-Montes Zone (NW Iberia) has resulted in a new stratigraphical interpretation of the entire sequence. This is relatively thin, with late Rhuddanian to mid-Telychian black cherts at the base overlain by late Telychian to early Ludfordian black shales, and ending with shales and limestones of Late Silurian age. A total of 10 graptolite biozones was firmly recognized; four others are doubtfully recognized. Palaeogeographical/biogeographical data support the parautochthonous nature formerly assigned to the Silurian succession of the “Schistose Domain”, as not being a direct prolongation of the Silurian of the Central-Iberian Zone.
Description:Trabajo presentado en Field Meeting of the International Subcommission on Silurian Stratigraphy. Götland (Suecia), 15-22 de agosto de 2005.
Publisher version (URL):http://www.gff-online.se/site/article.asp?articleID=881
URI:http://hdl.handle.net/10261/30737
ISSN:1103-5897
E-ISSNmetadata.dc.identifier.doi = DOI:2000-0863
Appears in Collections:(IGE) Comunicaciones congresos

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