Filters: Tags: β-carotane (X)
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We have analyzed the solvent extracts from three different types of native bitumens from the Uinta Basin in northeastern Utah by a variety of analytical techniques, including GC-IRMS, to evaluate variations in the paleodepositional environment during two periods of Lake Uinta deposition. The gilsonite and tabbyite bitumens are associated with Parachute Creek Member sediments deposited during a major expansion of ancient Lake Uinta. Compound specific isotopic analyses of ß-carotane and phytane (δ 13C = −32.6 to −32.1%0) from these bitumens reflect input from primary photosynthetic producers such as cyanobacteria. Sterane δ 13C values (−34.5 to −29.2%0) refflect contributions from lacustrine algae, while extremely...
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Organic Geochemistry,
bitumen,
compound-specific carbon isotope ratios,
cyanobacteria,
gammacerane,
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