ECHARTERS Message Board - Msg: 11405977

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Gold/Mining/Energy : ECHARTERS

Public Reply Prvt Reply Mark as Last Read File

Previous 10 Next 10 Previous Next

To: jurka who wrote (3203)	9/30/1999 9:53:00 AM
From: Aurum	Read Replies (1) of 3744

The paper "The Economic Potential of Terrestrial Impact Craters" R.A.F. Grieve and V.L. Masaitis, International Geology Review, Vol 36, 1994, pp. 105-151 talks about the Sudbury Basin. The nickel sulphide ores were possibly formed when large masses of melted rock mixed to form immiscible sulphides. The journals "Geology" and "New Scientist" a year or so ago carried articles reporting the work of John Spray of the Uni of New Brunswick, who has found a layer of pseudotachyte 45 square kilometres in extent, and one kilometre thick. Spray says that this pseudotachyte formed by friction along "super faults" produced at the time of an impact. There is currently a lot of debate that supposed impact structures are actually "Crypto-explosion" features. The paper by Grieve makes the point that 25% of known impact structures contain economic commodities - and he doesn't include the Rand (symmetrically situated around the Vredford ring impact structure. Commodities as diverse as oil, nickel, gold and diamonds are associated with impact structures. And two of these deposits are world class - Sudbury and the Rand.

Report TOU Violation

Share This Post

Public Reply Prvt Reply Mark as Last Read File

Previous 10 Next 10 Previous Next