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Organic Matter and Mineralisation: Thermal Alteration, Hydrocarbon Generation and Role in Metallogenesis (Hardcover, 2000 ed.)
Loot Price: R6,627
Discovery Miles 66 270
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Organic Matter and Mineralisation: Thermal Alteration, Hydrocarbon Generation and Role in Metallogenesis (Hardcover, 2000 ed.)
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A 'soft-rock' petroleum-type approach to exploration for
'hard-rock' minerals in sedimentary basins D. Taylor I.
Introduction Several major groups of ore deposits are found as
tabular, stratiform bodies or as cross- cutting but essentially
stratabound deposits within sedimentary basins. Important exam-
ples are oxide and carbonate ores of iron and manganese, copper and
zinc-lead sulphides and gold-uranium deposits. Where the host
basins have been strongly in- verted and deeply eroded and the
mineralized horizons brought to outcrop, the laterally extensive
nature of the mineralization usually results in outcrop or subcrop
of the ore itself. Direct detection by geological or geochemical
prospecting is then possible. Major deposits also occur in basins
which have not been strongly deformed and deeply eroded as
non-outcropping sub-horizontal sheets (Polish Kupferschiefer
deposits of the fore-Sudetic Monocline) or linear belts (Vibumam
Trend, Missouri, Admiral Bay, NW Australia). I believe that both
the Polish Kupferschiefer and Admiral Bay de- posits were found by
chance during oil and gas exploration, and deposits of this type
are similar in attitude and dimensions to small-medium size oil and
gasfields.
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