1887
Volume 32, Issue 2
  • ISSN: 0812-3985
  • E-ISSN: 1834-7533

Abstract

Gravity data obtained at Hiles Lagoon, near Terowie, indicates the presence of a subtle gravity low. The 5 m s-2gravity low over the lagoon possesses roughly circular dimensions with a diameter of approximately 200 m and is the likely response of a concealed kimberlite pipe. These results are of particular interest since previous aeromagnetic and aeroradiometric geophysical surveys have had little success in detecting a kimberlite pipe at Hiles Lagoon. Density determinations typical of weathered Australian kimberlites and shales were employed to create a structural model of a kimberlite pipe and the surrounding country rock. Resulting gravity raster images from the kimberlitic model allow us to confidently interpret the field response as a kimberlite pipe and justify the application of the gravimetric technique as a tool for detailed exploration.

© 2001 ASEG
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2001-06-01
2026-01-15

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  • Article Type: Research Article
Keyword(s): gravity surveys; Hiles Lagoon, Terowie; kimberlite density model; kimberlite exploration

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