
TY  - JOUR
A1  - J. Musgrave, Robert 
A1  - Funk, Charles 
A1  - Grewar, Julia 
A1  - E. Vega, Marta 
T1  - Magnetic petrophysics in the Stawell Gold Field: relating aeromagnetic anomalies to mineralising fluid flow
JF  - ASEG Extended Abstracts
JO  - ASEG Extended Abstracts
Y1  - 2006
VL  - 2006
IS  - 1
SP  - 1
EP  - 4
KW  - 
UR  - https://doi.org/10.1071/ASEG2006AB123 
N2  - Aeromagnetic anomalies at the Kewell Prospect in the Stawell gold field are characterised by negative lobes on the flanks of the Kewell structure, which require a source with reversed remanence. Direct measurement of remanence in Kewell samples was not possible, but hysteresis analysis of samples from Kewell and Stawell allow the pyrrhotite-bearing lithologies responsible for the magnetic anomalies to be divided into two populations. Population A spatially corresponds to zones of modelled high flow rates of mineralising fluids at Kewell, suggesting that the flow environment may directly influence magnetic properties, and through this influence, control the polarity of remanence. High fluid flow and associated gold endowment at Kewell appear to be associated with reversed remanence, and are sign- posted therefore by negative magnetic anomalies. 
ER  -

