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Lecture_15 - LECTURE 15 FOSSIL FUELS 1.0 ENERGY CONSUMPTION...

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LECTURE 15 - FOSSIL FUELS 1.0 ENERGY CONSUMPTION THROUGH TIME EARLY HUMANS - APPROX. 2 KCAL/PERSON MODERN SOCIETY - APPROX. 220 KCAL/PERSON ROLE OF FOSSIL FUELS 2.0 MEANING OF FOSSIL FUELS ENERGY SOURCES FORMED FROM REMAINS OF ONCE- LIVING ORGANISMS CO 2 + H 2 0 + sunlight = organic compounds + O 2 (free oxygen) INCLUDES THE FOLLOWING: OIL, NATURAL GAS, COAL, OIL SHALE, TAR SANDS COLLECTIVELY REFERRED TO AS NONRENEWABLE ENERGY SOURCES 3.O OIL AND GAS DEPOSITS CHARACTERISTICS LIQUID OR GAS SIMPLE AND COMPLEX HYDROCARBONS - METHANE (CH 4 ), PROPANE (C 3 H 8 ), BENZENE (C 6 H 6 ) ORIGIN MARINE SEDIMENTARY BASIN ABUNDANT DIATOMS, ZOOPLANKTON, PHYTOPLANKTON
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RAPID BURIAL OF HYDROCARBON DEBRIS ELEVATED PRESSURE & TEMPERATURE (50-200 O C) TIME (>1-2 MILLION YEARS) EVOLUTION OF OIL AND GAS HEAVY HYDROCARBONS -> LIGHTER HYDRO- CARBONS -> NATURAL GAS COMPLETE BREAKDOWN OF HYDROCARBONS AT >210 O C REFINING OF HYDROCARBONS MIGRATION AND CONCENTRATION OF HYDROCARBONS HYDROCARBON-RICH SOURCE ROCK - FINE- GRAINED ORGANIC-RICH CLASTIC ROCKS (E.G.
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