Alkaline Rocks and Carbonatites of the World

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Vargeao

stripes

Occurrence number: 
025-00-111
Country: 
Brazil
Region: 
Santa Catarina
Location: 
Longitude: -52.45, Latitude: -27.25

A circular dome 11 km wide with annular and radial fractures is thought to lie above an alkaline intrusion. Dykes, which may have been alkaline, are heavily weathered.

References: 
FILHO, A.P., ANDRADE, C.A.V. and SCHEIBE, L.F. 1978. Uma janela estratigrafica no oeste de Santa Cararina: o domo de Vargeao. Anais do Congresso Brasileiro de Geologia, 30(1): 408-12
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith