ECHARTERS Message Board - Msg: 10991399

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Gold/Mining/Energy : ECHARTERS

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To: John E.Quinn who wrote (3183)	8/18/1999 12:44:00 AM
From: E. Charters	Read Replies (3) of 3744

NO such luck. The East Bull Lake Massif is a giant gabbroic intrusion which includes the River Valley formation. 130 kilometres sounds like lots but it is only 78 miles. The Larder Lake break stretches for 150 miles from Shiningtree to Quebec. Stop thinking of geology as just the claim you staked last week. The boundaries of formations are, perforce because of the large scale tectonic movements that create them, huge. Many small thinkers will tell you that such and such Archon of perhaps 40 miles across with dubious evidence of being some kind of mini-basin is the locus of all diamond formation in their area. All outside of this is "off Archon" or "off craton." This is quintessential pseudo or political geology once propounded to the credulous natives of Africa and Canada as the reason why "Diamond can only come from South Africa" Any cretin who studied past 2nd year would realize that true basins can only have dimensions in the hundreds and thousands of miles. Anything less than the size of Hudson's Bay could not possibly be a Craton. The Rocky Mountain Trench starts to qualify as a basin or would be Craton (given a half a billion years). All of Canada from the Rockies to the Appalachians is a craton. Perhaps the North American trough is an Archon, stretching from Missouri to James Bay. Stop taking your geology from two bit promoters on Howe Street and start reading a bit about the subject. And thinking. This will explode all the BS you hear about the occurence of minerals and from a lot of so called experts as well. All the mafics on the edge of the Grenville from Manitoulin Island to Schefferville Quebec are related moutain edge intrusions that started in archean times and ran to proterozoic times. The grenvillean orogeny pushed mountains at the edge of River Valley and Sudbury to Kirkland Lake on into Seneterre up to 30,000 feet above their base, squeezing the Sudbury formation into an oval shape and raining sediments down into its sea covered basin. The copper -zinc deposits all along the edge of the Grenville were metamorphosed to silicate facies and there they sit in bands hundreds of miles long deposited in Archean times, now unextractable in gniesses up to 17% zinc. You have to look at the big picture. EC<:-}

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