Alkaline Rocks and Carbonatites of the World

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Shenango

stripes

Occurrence number: 
031-00-068
Country: 
Canada
Region: 
Ontario
Location: 
Longitude: -82.07, Latitude: 48.03

This intrusion of 11x7 km emplaced in Precambrian high grade metamorphic rocks consists of syenites and alkaline diorites, but no descriptions are available.

Age: 
A whole rock Rb-Sr isochron gave 1047+-15 Ma (Bell and Blenkinsop, 1980, Table 3).
References: 
BELL, K. and BLENKINSOP, J. 1980. Grant 42 ages and initial 87Sr-86Sr ratios from alkalic complexes of Ontario. Miscellaneous Paper, Ontario Geological Survey, 93: 16-23. WATKINSON, D.H., THURSTON, P. and SHAFIQULLAH, M. 1972. The Shawmere anorthosite of Archean age in the Kapuskasing Belt, Ontario. Journal of Geology, 80: 736-9
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith