Class Notes (809,114)
Canada (493,533)
EESA06H3 (540)
Nick Eyles (472)
Lecture 9

Lecture 9

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University of Toronto Scarborough
Environmental Science
Nick Eyles

EESA06 th 20 March 2009 1. Resources vs. reserves 2. @ }L] Z]L2} L[ZK]LoZ} Z 3. Greenstone belts on the Canadian shield: VMS deposits (volcanogenic massive sulphides): copper, silver 4. Sudbury meteorite crater: nickel 5. Oil, gas, coal, tar sands & evaporates in sedimentary basins 6. Diamonds and hot spots 7. Placer gold in glacial sediments Resources vs. reserves - Resources: subeconomic, discovered or undiscovered (knownunknown) - Reserves: economic, discovered o Reserves are economically shrinking o A lot is non-recoverable because it cannot be reached - Difference between resourcesreserves is the cost of the commodity - Mining o Chert mining 11,000 years ago in Ontario (oldest) o William Logan produced the first geology map of Canada Claimed that there was no coal Greenstone belts on the Canadian shield - Pillow basalt - formed under the ocean but end up in the middle of Canadian shield o Land masses grow (accretion) from protocontinents like Japan into larger continents - Greenstone belts record waves when they were rising from the ocean o Most mineral rich
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