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Thus, diasterenes (8) and the corresponding diasteranes (9) formed by
hydrogena- tion during late diagenesis. are found in shales but not in carbonate
rocks which lack the catalytic activity of clays. An alternative diagenetic
Time-stratigraphic unit: Rocks formed during a particular interval of time; the
basic time- stratigraphic unit is the geologic system. Unconformity: Surface of
erosion or nondeposi- tion that separates younger strata from older rocks.
Geologic time ...
4-hydroxypyridine 4-aminopyridlne tion, despite being aromatic, because
nitrogen accommodates a HETEROCYCLIC CHEMISTRY 679. TABLE V.
Ultraviolet Spectral Maxima and Extinctions for Heteroaromatic Compounds
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Fusion Devices Explosive 1 Brij Agrawal
Game Theory 37 Glacial Geology
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