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Index (O)
OA - OC
OD - OF
OG - OJ
OK - ON
OO - OR
OS - OV
OW - OZ
Moment of truth
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The Voyager I spacecraft is the most distant man-made object in the universe. It was launched in 1977 and as in 2002, it was more than 8 billions miles from the Earth. |
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OG - OJ
oil sand Geol.
Sandstones or grains of sand that are surrounded with hydrocarbon such as petroleum or bitumen. Can be found both at the shallow surfaces and underground, of which the largest deposits occur in Alberta, Canada, covering an area of
77,000 km2. It is also found in Venezuela, Albania and Romania.
Recovery of crude oil from oil sand is a more difficult process than the conventional oil well extractions. Oil sands require extra recovery processes such as extraction and separation of petroleum from the sand and other mineral
matters and water.
OG - OJ
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