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An integrated rock magnetic and EPR study in soil samples from a hydrocarbon prospective area

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dc.contributor.authorGonzalez-Lucena, Fedora
dc.contributor.authorAldana, Milagrosa
dc.contributor.authorCostanzo-Alvarez, V.
dc.contributor.authorDiaz, M.
dc.contributor.authorRomero, I.
dc.contributor.editorAubourg, Charles
dc.contributor.editorElmore, D.
dc.contributor.editorHirt, A.
dc.contributor.editorPesonen, L. J.
dc.contributor.editorPeters, C.
dc.contributor.editorPetrovsky, E.
dc.contributor.editorScholger, R.
dc.date.accessioned2020-10-14
dc.date.accessioned2022-05-31T01:15:42Z
dc.date.available2022-05-31T01:15:42Z
dc.date.issued2002
dc.description.abstractMagnetic susceptibility (MS) and organic matter free radical concentration (OMFRC) determined by electron paramagnetic resonance, have been measured in soil samples ( nearly equal 1.5 m depth) from an oil prospective area located at the southern flank of the Venezuelan Andean Range. S-ratios close to 1, as well as high temperature susceptibility analyses, reveal magnetite as the chief magnetic phase in most of these samples. Ethane concentrations, MS and OMFRC normalized data have been plotted against the relative position of 22 sampling sites sequentially arranged from north to south. Although there is not a linear correlation between MS and OMFRC data, these two profiles seem to vary in like fashion. A MS and OMFRC southern anomaly coincides with the zone of highest ethane concentration that overlies a "Cretaceous kitchen". OMFRC highs could be linked to the degradation or alteration of organic matter, the possible result of hydrocarbon gas leakage, whose surface expression is the stressed fern observed by remote sensing studies previously performed in the area. Ethane anomalies are associated to this seepage that also produces changes in the magnetic mineralogies detected as MS positive anomalies.
dc.description.urihttps://library.macewan.ca/cgi-bin/SFX/url.pl/DXU
dc.identifier.citationGonzález, F., Aldana, M., Costanzo-Alvarez, V., Diaz, M., Romero, I. (2002). An integrated rock magnetic and EPR study in soil samples from a hydrocarbon prospective area. Physics and Chemistry of the Earth, 27,1311-1317
dc.identifier.doihttps://doi.org/10.1016/S1474-7065(02)00125-0
dc.identifier.urihttps://hdl.handle.net/20.500.14078/1871
dc.languageEnglish
dc.language.isoen
dc.rightsAll Rights Reserved
dc.subjectmagnetic susceptibility
dc.subjectorganic matter free radical concentration
dc.subjectOMFRC
dc.subjectelectron paramagnetic resonance
dc.subjectVenezuelan Andean Range
dc.subjectethane concentration
dc.subjectethane anomalies
dc.subjectseepage
dc.subjectmagnetic mineralogies
dc.titleAn integrated rock magnetic and EPR study in soil samples from a hydrocarbon prospective areaen
dc.typeArticle

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