Cover illustration: the cover shows seismograms of the
Oban earthquake of 29th September 1986, magnitude 4.2 ML, recorded on the LOWNET
seismometer array in central Scotland.
(see article by Terry Turbitt on
page 12).
Contents
page
Editorial
The Molopo Farms Project - mineral exploration
in the Kalahariby David Gould
1
Ultra-Deepby Mike Cotterill
9
British earthquakesby Terry Turbitt
12
The Foss Baryte Mine, Aberfeldyby
Rosalind Garton
20
Argyll Adventure or Dalavich Dabble?by Margaret Rushbridge
23
Book Review:
Down to Earth: one hundred and fifty years of
the British Geological Survey - H E Wilson review by Andrew McMillan