Alkaline Rocks and Carbonatites of the World

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Bairro Da Cruz

stripes

Occurrence number: 
025-00-108
Country: 
Brazil
Region: 
Parana
Location: 
Longitude: -48.85, Latitude: -24.83

An oval-shaped complex of about 1 km diameter. Olivine gabbro and phonolite are present but little information is available.

Age: 
K-Ar on amphibole plus pyroxene from gabbro gave 230±17 Ma.
References: 
HAMA, M., ALGARTE, J.P., PAIVA, I.P. and RODRIGUES, J.C. 1977. Idades K/Ar do macico alcalino do Banhadao e do complexo Bairro da Cruz. In Atas do I Simposio de Geologia Regional, Sociedade Brasileira de Geologia Nucleo de Sao Paulo, Sao Paulo: 170-8
Location: 
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith