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Science 9 February 1968:
Vol. 159. no. 3815, pp. 622 - 625
DOI: 10.1126/science.159.3815.622
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Articles

Diatremes with Kimberlitic Affinities in North-Central Montana

B. Carter Hearn Jr. 1

1 U.S. Geological Survey, Washington1, D.C. 20242

Diatremes in the Missouri River Breaks demonstrate systematic subsidence-ring structure, contain inclusions derived from far above and far below, and have been produced by gas-rich eruptions of alkalic ultramafic magmas. Similar magmas have produced diatremes in many localities in the world and are known to be closely associated with and probably parental to kimberlites.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Lamproites and other potassium-rich igneous rocks: a review of their occurrence, mineralogy and geochemistry.
S. C. Bergman (1987)
Geological Society, London, Special Publications 30, 103-190
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