Isotopic ages of Lentiira - Kuhmo - Kostomuksha olivine lamproite - Group II kimberlites

Isotopic ages of Lentiira - Kuhmo - Kostomuksha olivine lamproite - Group II kimberlites

The Lentiira-Kuhmo-Kostomuksha triangle, along the Finland – Russian border and within the central part of the Archean Karelian craton, contains numerous examples of phlogopite-rich, ultramafic, mantle-xenocryst-bearing and, in some cases, diamond-bearing dike rocks. Laser probe Ar-Ar data on phlogo...

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Bibliographic Details
Main Authors: H. O'Brien, D. Phillips, R. Spencer
Format: Article
Language:English
Published: Geological Society of Finland 2007-12-01
Series:Bulletin of the Geological Society of Finland
Subjects:
kimberlite
lamproite
phlogopite
biotite
absolute age
Ar-40/Ar-39
Proterozoic
Lentiira
Seitaperä
Kuhmo
Finland
Kostomuksha
Russian Federation
Online Access:http://www.geologinenseura.fi/bulletin/Volume79/OBrien_etal_2007.pdf

Internet

http://www.geologinenseura.fi/bulletin/Volume79/OBrien_etal_2007.pdf

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