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Paleomagnetism of some Indian kimberlites and lamproites
Precambrian Research, 1994Abstract Consistent vectors have been isolated by AF demagnetization of 22 cores from two sites in Proterozoic kimberlites in the Wajrakarur district of the Dharwar Craton ( N =2, D =156, I =−71, K =1596, α =6.3, Pole WAJ 45.4°S, 121.5°W), and 12 cores from two sites from the mine at Majhgawan in the Panna district in the Aravalli craton ( N =2,
K.C. Miller, R.B. Hargraves
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Potassic Rocks and the Lamproite Clan
1991Sorenson (1974, p.7), in a review of the varied definitions proposed for alkaline rocks, concludes that the term has been used by so many petrologists in so many different ways and usually so vaguely that “it is hard to know what is covered by the term.” Alkalinity implies enrichment in the alkali elements, sodium and potassium, but this in turn can be
Roger H. Mitchell, Steven C. Bergman
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Petrogenetic relationships between melilitite and lamproite
Contributions to Mineralogy and Petrology, 1991A. Cundari, A. K. Ferguson
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