Abstract

The locality and form of intrusions in a relatively unknown kimberlite province in Basutoland are tabulated. The kimberlites, predominantly basaltic, contain inclusions of eclogite and granulite in addition to cognate xenoliths and fragments of the Karroo country rocks.

It is shown that the intrusion of the kimberlites has been governed by the regional joint pattern, and evidence is presented that the kimberlites were emplaced by a gas-solid fluidization process.

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