Dear Colleagues:
I am looking for a list of mineral/oil discoveries made with aeromagnetics. I
have come across some partial lists but nothing which I felt was very
complete, either in the details provided or the number of deposits covered.
By 'discoveries' I am as well not meaning the sole technique used to make a
find but that aeromagnetics provided a key piece of the geoscience data used
to find a deposit. New deposits or extensions to known deposits would be
fine, but if this is the case, this should be flagged.
Short of finding a list, I would be prepared to construct a list if people
were willing to submit cases which they felt should be included. I have
recently completed a list for airborne EM discoveries, which I plan to
publish next year. For that list, I collected the following:
1) Name of deposit
2) Year of discovery (date of drilling not survey date)
3) Owner of property at time of discovery
4) System used (not as critical for mag as EM but still of value)
5) Tonnage & grade (Mbbls)
6) Whether or not deposit was mined/exploited
7) Are profiles available?
8) References
My geographic scope is global but for the EM case, I have found the CIS and
China to be very tough to get reliable stats for.
An important ancillary piece of information is the amount of actual surveying
that has been performed. This is in a way a separate request but I would like
to know if there are some good references where such is covered. Again, from
my airborne EM, this is a very hard thing to get a bead on-hope springs
eternal.
Aeromag like EM has been used for about 50 years and as we pass into the next
century, I think it important to quantify what airborne geophysics has done.
Any help you can provide would be great.
My intention is to make this list available to the public as soon as it looks
to be in reasonable shape. What I have done with the EM list is provide it to
those who contributed, with the request to simply provide a suitable
reference.
Regards,
Ken Witherly
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