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09:03 Mar 28, 2005 |
English language (monolingual) [PRO] Tech/Engineering - Mining & Minerals / Gems | |||||||
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| Selected response from: juvera Local time: 20:37 | ||||||
Grading comment
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SUMMARY OF ALL EXPLANATIONS PROVIDED | ||||
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5 | footwall: the wall or rock on the underside of the deposit, spay: splay |
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4 | wedge of weakened rock >>> |
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Discussion entries: 1 | |
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footwall: the wall or rock on the underside of the deposit, spay: splay Explanation: The footwall is the geological structure supporting the ore/deposit. They also call it the underlining wall or ledger wall. When they mine the ore, the top of it becomes the "floor" of the shaft. Spay: I am convinced, they meant splay, which means, that the footwall is widening, splaying out. Here is a mining glossary. www.meridiangold.com/glossary.cfm -------------------------------------------------- Note added at 4 hrs 39 mins (2005-03-28 13:42:50 GMT) -------------------------------------------------- You are right, splays are faults. (Probably, because the fault spreads the structure, but it is only my theory.) It is certain, that there is a letter missing, the word is splay. Here is a website relating to it, at point 6. it says \"fault-splay\". I wonder, if you could find the french version of it... www.unige.ch/sciences/terre/mineral/publications/onlinepub/... -------------------------------------------------- Note added at 4 hrs 55 mins (2005-03-28 13:59:06 GMT) -------------------------------------------------- See these as well: csmres.jmu.edu/geollab/vageol/vahist/struprimer.html www.iodp-mi-sapporo.org/active_pdf/603B-Full2_cover.pdf |
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wedge of weakened rock >>> Explanation: From www.geol.canterbury.ac.nz/research: "The combination of foolwaal splays and partitioning of strike - slip on the steep hanging wall side of the whole fault zone, creates a wedge of weakened rock dominated by inclined shear zones dippimg into the hillside." footwall - the lower underlying wall of a vein, ore deposit, or coal seam in mine the lower wall of an incident faul splay - slope, to dislocate also a block of rock involved in fault movement-oposite hanging wall This has to do in geology with long term rock cycle, where the rocks were first deposited on side of the hill or... and later became a part of ore, coal deposits or... because the faulting. Sorry for some typo and I cannot be helpfull more because E. as a second l., but hawing Geology education as a part of Geography. Reference: http://www.geol.canterbury.ac.nz/research |
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