1) La descarga del recurso depende de la página de origen
2) Para poder descargar el recurso, es necesario ser usuario registrado en Universia


Opción 1: Descargar recurso

Opción 2: Descargar recurso

Detalles del recurso

Descripción

Precise zircon and monazite ID-TIMS U–Pb dating of three Lower Ordovician altered ash-fall tuff beds (K-bentonites) in the Cantabrian Zone of NW Iberia yielded coeval ages together with an equivalent previously studied sample (477.5 ± 1 (Gutierrez-Alonso et al., 2007)), of 477 ± 1.3 Ma, 477.2 ± 1.1 Ma and 477.3 ± 1 Ma, with a pooled concordia age (all analyses in the four samples) of 477.2 ± 0.74 Ma. A conservative estimation of the volume and mass of the studied K-bentonite beds (using exclusively the CZ data) yields a volume for the preserved deposits of ca. 37.5 km3 (Volcanic Explosivity Index — VEI = 6, Colossal). When considering other putative equivalent beds in Iberia and neighboring realms (i.e. Armorica, Sardinia) the volume of ejecta associated to this event would make it reach the Supervolcanic–Apocalyptic status (VEI = 8, > 1000 km3). At variance with most known cases of this kind of gigantic eruption events, geological observations indicate that the studied magmatic event was related to continental margin extension and thinning and not to plate convergence. We speculate that a geochronologically equivalent large caldera event recognized in the geological record of NW Iberia could be ground zero of this super-eruption.

Pertenece a

Digital.CSIC  

Autor(es)

Gutiérrez -  Alonso, G. -  Marco, J. C. -  Fernández -  Suárez, Javier -  Bernárdez, Enrique -  Corfu, Fernando - 

Id.: 70094572

Idioma: eng  - 

Versión: 1.0

Estado: Final

Palabras claveOrdovician - 

Tipo de recurso: Artículo  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: openAccess

Requerimientos técnicos:  Browser: Any - 

Relación: [References] Postprint
[References] http://dx.doi.org/10.1016/j.tecto.2015.12.012
[References] Sí

Fecha de contribución: 30-dic-2017

Contacto:

Localización:
* Tectonophysics, 681: 85–94 (2016)
* 0040-1951
* 10.1016/j.tecto.2015.12.012

Otros recursos del mismo autor(es)

  1. Propiedades físicas de objetos transneptunianos y centauros Los objetos transneptunianos (TNOs) son aquellos cuerpos del Sistema Solar con órbitas cuyo semieje ...
  2. Detection of QTLs controlling metabolism, meat and liver quality traits of the overfed duck. International audience
  3. Environmental effect compensation for damage detection in structures using artificial neural networks and chirplet transform One of the open problems to implement Structural Health Monitoring techni ques based on ...
  4. Search for single production of vector-like quarks decaying to a b quark and a Higgs boson A search is presented for single production of heavy vector-like quarks (B) that decay to a Higgs bo...
  5. Search for lepton-flavor violating decays of heavy resonances and quantum black holes to e$\mu$ final states in proton-proton collisions at $\sqrt{s}=$ 13 TeV A search is reported for heavy resonances decaying into e$\mu$ final states in proton-proton collisi...

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.