Volcanic Architecture In The Odiel River Area And The Volcanic Environment In The Riotinto-Nerva Unit, Iberian Pyrite Belt, Spain

Jump to: navigation, search


OpenEI Reference LibraryAdd to library

Journal Article: Volcanic Architecture In The Odiel River Area And The Volcanic Environment In The Riotinto-Nerva Unit, Iberian Pyrite Belt, Spain

Abstract
In order to assess the volcanic architecture of the VSC in the Iberian Pyrite Belt, Spain, a study of the volcanic and sedimentary lithofacies has been undertaken on a section up to 1000 m thick in the Odiel river, considered to be also representative of other areas of the Riotinto-Nerva Unit. Among other mineral deposits, this unit includes the world-class volcanic-hosted massive sulfide deposits of the Riotinto mining district. Several conclusions have been obtained: a) a complex, thick volcanic succession, as well as mafic and felsic sills and thin sedimentary intervals, predated the genesis of the sulfide deposits, which did not form in a dominantly sedimentary environment; b) two successive, felsic volcanic sequences can be distinguished, showing textural and chemical variations from bottom to top; c) mafic lithofacies decrease upwards in the sequence, and d) volcanic structures, eruption style and internal organization suggest a deep subaqueous depositional environment, which agrees with the depositional setting for massive sulfide deposits.

Authors 
A. Valenzuela, T. Donaire, M. J. Gonzalez-Roldan, M. Toscano and E. Pascual








Published Journal 
Journal of Volcanology and Geothermal Research, 2011





DOI 
Not Provided
Check for DOI availability: http://crossref.org



 

Citation

A. Valenzuela,T. Donaire,M. J. Gonzalez-Roldan,M. Toscano,E. Pascual. 2011. Volcanic Architecture In The Odiel River Area And The Volcanic Environment In The Riotinto-Nerva Unit, Iberian Pyrite Belt, Spain. Journal of Volcanology and Geothermal Research. (!) .