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- W3118449273 abstract "Analyses of multiple Mississippian and Pennsylvanian aged source rock samples in the Anadarko Basin, Oklahoma, revealed the presence of a compound that was tentatively identified as 18α(H)-oleanane. The identity of the 18α(H)-oleanane was subsequently confirmed by GCMS, GCMSMS, and coinjection with a sample known to contain 18α(H)-oleanane. The approach to identifying 18α(H)-oleanane was similar to that described in previous publications that have noted the presence of 18α(H)-oleanane in pre-Cretaceous samples. The presence of 18α(H)-oleanane in an Early Mississippian Kinderhookian sample appears to be the earliest reported occurrence to date. 18α(H)-Oleanane has typically been reported to be derived from a Late Cretaceous/Early Tertiary angiosperm source which would appear unlikely in this case since there are no Cretaceous or Tertiary aged source rocks in Oklahoma. This paper discusses possible sources for 18α(H)-oleanane including the suggestion that angiosperms, or angiosperm related species, split off from the gymnosperms far earlier than previously proposed. It is proposed that the data and methods discussed in this paper clearly show the presence of a compound identified as 18α(H)-oleanane in Mississippian and Pennsylvanian age samples. However, the source of the 18α(H)-oleanane still remains unclear." @default.
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- W3118449273 date "2021-02-01" @default.
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- W3118449273 title "The presence of 18α(H)-oleanane in Pennsylvanian and Mississippian rocks in the Anadarko Basin, Oklahoma" @default.
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- W3118449273 doi "https://doi.org/10.1016/j.orggeochem.2021.104181" @default.
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