
%0 Journal Article
%A Allen, T.I. 
%A Cooper, S.A. 
%A Cull, J.P. 
%T High definition gravity surveys and density modelling for kimberlite exploration
%J Exploration Geophysics
%D 2001/06/01
%V 32
%N 2
%P 89-94
%K 
%R https://doi.org/10.1071/EG01089
%U https://www.publish.csiro.au/paper/EG01089 
%X Gravity data obtained at Hiles Lagoon, near Terowie, indicates the presence of a subtle gravity low. The 5 mm s-2 gravity 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. 
