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Gold/Mining/Energy : ECHARTERS -- Ignore unavailable to you. Want to Upgrade?

To: jurka who wrote (3203)	8/25/1999 8:35:00 PM
From: E. Charters	Read Replies (1) \| Respond to of 3744

Well, volcanigenisis or magmatic interconjection, will still yield treasure no matter what the mover. If you will, you can make the meteor the hammer. Or you can call it endogenetic. It matters not. A matter of conjecture is did the bleme get squeezed north south or did it not. The theory of otherworldly sources of the outpouring is around still. It is still somewhat controversial. Volcanic areas that were explosive still have similar shock metamorphism. It is admitted that the sublayer breccia is deep and extensive and so somewhat problematic for mere explosive volcanism, no matter how explosive. One can have all worlds though. An astrobleme, AND explosive volcanism, AND sea bed mineralization during phreatomagmatic phases. EC<:-}

To: jurka who wrote (3203)	8/26/1999 8:53:00 AM
From: Stephen Mooney	Read Replies (1) \| Respond to of 3744

jurka - In a forum discussion on the net about three years ago a poster dug up (and posted a link to) a publication which purported that scientists claimed that the Wanpitei Lake (east of Sudbury) was formed by a meteor crashing to earth. That lake is almost in the center of the twin Sudbury and Wanapitei Magnetic Anomalies. You can almost imagine a butterfly with the body of the lake being the body of the butterfly and the Anomalies forming the two wings. Now I'd better fly before Eric comes back to crush my heretical body.

To: jurka who wrote (3203)	9/30/1999 9:53:00 AM
From: Aurum	Read Replies (1) \| Respond to 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.