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Gold/Mining/Energy : Winspear Resources - Eric Charters Only! -- Ignore unavailable to you. Want to Upgrade?


To: Chas. who wrote (40)10/26/1998 8:52:00 PM
From: E. Charters  Read Replies (2) | Respond to of 99
 
cone sheet diabases/or other intrusives are a geologist's words. who is he?

They were operational concepts in the analysis of intrusive "sills" in Cobalt.

In fact many Gabbros and diabases may be extrusives or nearly so. Just look at he proximity of adjacent volcanics and sediments and their relative erosion in the pile.

The kimberlites here are more likely long linear extrusive explosive diatremes in a thrust fault at an edge of a sedimentary mobile sheet. They connect for hundreds of miles continuous along transform faults in continental drift direction. Most of the dyke is hypabyssal with sections that are diatreme or explosive phreatic facies.

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