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point to the presence of unconverted oil shales in the oldest rocks as indicating
that low temperatures, even given geologic time, cannot create petroleum.
Association of natural gas. Inasmuch as all accumulations of liquid petroleum
have gas ...
of Asia. These ranges are composed largely of complexly folded and faulted
Paleozoic and Mesozoic sedimentary rocks that have had a varied geologic
history. The Anatolian Plateau of central Turkey lies between The two major
ranges in the ...
any radiogenic nuclide incorporated in the rock or mineral when it was formed or
subsequently added or lost Radio- through processes other than radioactive
decay. Radio- metric metric measurements do not necessarily establish the age
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review
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For virtually all its 238 years,Britannica has ruled the shelves as a peerless general encyclopedia. Reviewers have consistently given it high marks for most of the 12 criteria identified inKister's ... Read full review