GREY:SWFCF - Post by User
Comment by
bestguesstooon Aug 20, 2006 9:32pm
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Post# 11249976
RE: Encouraged by the results
RE: Encouraged by the resultsThe Snap Lake project area is less than 2 sq. mi. (500 hectares) See the stats page at: https://www.debeersgroup.com/debeersweb/About+De+Beers/De+Beers+World+Wide/Snap+Lake+Project+Statistics.htm
The Mud lake sill is thicker than the Snap Lake dyke.
Wikepedia defines a dyke as" A dike or dyke in geology refers to a tabular intrusive igneous body. The thickness is usually much smaller than the other two dimensions. Thickness can vary from sub-centimeter scale to many meters in thickness and the lateral dimensions can extend over many kilometers. A dike is an intrusion into a cross-cutting fissure, meaning a dike cuts across other pre-existing layers or bodies of rock, this means that a dike is always younger than the rocks that contain it. Dikes are usually high angle to near vertical in orientation, but subsequent tectonic deformation may rotate the sequence of strata through which the dike lies so that the latter becomes horizontal. Near horizontal or conformable intrusions along bedding planes between strata are called intrusive sills.
The Mud Lake sill is many times thicker and so the sill may contain many more tonnes of kimberlite in an area that is much smaller than the Snap Lake dyke.
The Mud Lake sill is still open ended.