Age and setting of the Upper Neoproterozoic Narcea Antiform volcanic rocks (NW Iberia)

  1. Fernández Suárez, J.
  2. Jeffries, Teresa E.
  3. Gutiérrez Alonso, Gabriel
Aldizkaria:
Geogaceta

ISSN: 0213-683X

Argitalpen urtea: 2003

Zenbakia: 35

Orrialdeak: 79-82

Mota: Artikulua

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Beste argitalpen batzuk: Geogaceta

Laburpena

U-Pb dating of zircons from ryolites intercalated within the Narcea Antiform Neoproterozoic rocks was performed by laser ablation ICP-MS). The age of the ryolite is 559±3 Ma which allows the separation of two different units within the previously established Tineo Series. It is suggested that a terrane-transfer related pull-apart environment could have been the ideal setting for the genesis of these rocks in accordance with previously proposed models for the Neoproterozoic evolution of this region.

Datuen iturria: Dialnet