GREY:PGDIF - Post by User
Comment by
xDeBeerson Dec 14, 2013 7:33pm
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Post# 22006917
RE:RE:RE:Gravity Surveys
RE:RE:RE:Gravity SurveysBottom line is these two images are not of the same resolution. The magnetic image is higher resolution than the gravity image. If the gravity was the same resolution as the magnetics, you would see more in the gravity and it would be clearer.
Now they know gravity works, they could go back and "fill in the gaps" in the gravity to make it an even better image than the magnetics.
What they where really doing though, is confirming gravity works in preparation for airborne gravity.
A magnetic reading takes milliseconds. A gravity reading takes 50-120 seconds. An airborne gravity reading is less than a second. The airborne gravity will find almost all the >1Ha kimberlites fast. It will cost a fortune. But it is worth it.
There are a lot of complexities in interpreting this data, and it is not for the inexperienced. For example crater facies is non-magnetic, hyperbyssal kimberlite is magnetic. Anomalies look bigger in the gravity data, and so on...