Generation of compositionally atypical hydrocarbons in CO2-rich geologic environments.

Gize, Andrew and Macdonald, Ray (1993) Generation of compositionally atypical hydrocarbons in CO2-rich geologic environments. Geology, 21 (2). pp. 129-132. ISSN 1943-2682

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Abstract

Bitumen seepages from a trachyte flow on the Suswa volcano (East African Rift) are anomalously enriched in O and N heteroatomic organic compounds and depleted in aliphatics. Compositional and geologic data suggest that the biogenically derived bitumens were extracted and/or transported by liquid or supercritical CO2, rather than H2O, possibly from caldera-lake sediments. Compositionally atypical hydrocarbons and reduced carbon associated with other alkaline-peralkaline igneous complexes, as well as Hg and Au deposits, may also reflect CO2, fluids. Hydrocarbon extraction and migration in CO2-rich fluids are considered realistic mechanisms in certain geologic environments.

Item Type:
Journal Article
Journal or Publication Title:
Geology
Uncontrolled Keywords:
/dk/atira/pure/researchoutput/libraryofcongress/ge
Subjects:
ID Code:
22615
Deposited By:
Deposited On:
22 Jan 2009 14:17
Refereed?:
Yes
Published?:
Published
Last Modified:
22 Feb 2020 06:56