Fossielbrandstof: Verskil tussen weergawes

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Lyn 3:
'''Fossielbrandstowwe''' is [[brandstof|brandstowwe]] wat gevorm word vanuit natuurlike hulpbronne soos die [[anaërobiese ontbinding]] van dooie, bedolwe [[organisme]]s. Die ouderdom van hierdie organismes en hul gevormde fossielbrandstof word tipies in die orde van miljoene jare beraam, met beramings tot 2 miljard jaar.<ref>Paul Mann, Lisa Gahagan, and Mark B. Gordon, "Tectonic setting of the world's giant oil and gas fields," in ''Michel T. Halbouty'' (ed.) [http://books.google.com/books?id=mrghwzjeU-AC&pg=PA50&lpg=PA50&dq=%22precambrian+oil%22+halbouty&source=bl&ots=xGS8yx9cUn&sig=kAQvoCdognlM-k0bDI2ZLCj5ri4&hl=en&ei=bo8_SoSNJZPCsQPYgvS6Dw&sa=X&oi=book_result&ct=result&resnum=1 ''Giant Oil and Gas Fields of the Decade, 1990–1999''], Tulsa, Okla.: ''American Association of Petroleum Geologists'', p.50, besoek op 22 Junie 2009.</ref> Hierdie brandstowwe bevat hoë persentasies [[koolstof]] en [[koolwaterstof|koolwaterstowwe]].
 
Fossielbrandstowwe bestaan uit reeks van verskillende samestellings, vanaf [[Vlugtigheid (chemie)|vlugtige materiale]] met lae [[koolstof]] tot [[waterstof]] ([[koolstof|C]]:[[waterstof|H]]) verhoudings soos [[metaan]], tot vloeibare [[petroleum]], tot nie-vlugtige materiale wat feitlik uit suiwer koolstof bestaan, soos [[antrasiet]] [[steenkool]]. Metaan word gevind in koolwaterstof velde, in 'n suiwer vorm, saam met [[olie]], of in ander vorme. Daar word algemeen aanvaar fossielbrandstowwe is die [[fossiel]]oorskot van eens dooie [[plant]]e of diere<ref>{{cite web |author=Dr. Irene Novaczek |title=Canada's Fossil Fuel Dependency |url=http://www.elements.nb.ca/theme/fuels/irene/novaczek.htm |publisher=Elements |access-date=18 Januarie 2007 |language=fr |archive-url=https://web.archive.org/web/20190904215820/http://www.elements.nb.ca:80/theme/fuels/irene/novaczek.htm |archive-date= 4 September 2019 |url-status=live |df=dmy-all }}</ref> wat blootgestel is aan die hoë temperature en drukke in die [[aardkors]] oor 'n tydperk van honderde miljoene jare.<ref>{{cite web|title=Fossil fuel|url=http://oaspub.epa.gov/trs/trs_proc_qry.navigate_term?p_term_id=7068&p_term_cd=TERM|publisher=EPA|accessdate=2007-01-18|archive-date=2007-03-12|archive-url=https://web.archive.org/web/20070312054557/http://oaspub.epa.gov/trs/trs_proc_qry.navigate_term?p_term_id=7068&p_term_cd=TERM|url-status=dead}}</ref> Hierdie teorie was eers voorgestel deur [[Georg Agricola]] en later deur [[Mikhail Lomonosov]] in die 18de eeu.
 
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