Abstract
Thirteen (out of 16) oriented kimberlite samples from the Schuller and Franspoort pipes in the Premier swarm have yielded consistent stable remanent vectors after detailed AF demagnetization. The calculated poles (Schuller, n =8, 33.4°N, 53.5°E, α 95 =6.0; Franspoort, n =5, 49.1°N, 48.8°E, α 95 =7.5) are similar to those previously determined for the Premier and National pipes. The four poles are somewhat streaked, but their mean: n =4, 30.0°N, 52.5°E, α 95 =16.3, is considered to be a better estimate of the pole position for the Kaapvaal Craton ∼ 1200 Ma ago.
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