| Abstract: | Dispersed kerogen of the Woodford-Chattanooga and Atoka Formations from the subsurface of the Arkoma Basin show a wide range of thermal maturities (0.38 to 6.1% R(o)) indicating thermal conditions ranging from diagenesis to incipient rock metamorphism. Raman spectral analysis reveals systematic changes of both the first- and second-order spectrum with increasing thermal maturity. These changes include a pronounced increase in the D/O peak height ratio accompanied by a narrowing of the D peak, a gradual decrease in the D/O peak width ratio, and a shift of both peaks toward higher wave numbers. Second-order Raman peaks, though less intensive, also show systematic peak shifting as a function of R(o). These empirical results underscore the high potential of Raman spectrometry as a fast and reliable geothermometer of mature to supermature hydrocarbon source rocks, and as an indicator of thermal maturity levels within the anchizone.Dispersed kerogen of the Woodford-Chattanooga and Atoka Formations from the subsurface of the Arkoma Basin show a wide range of thermal maturities (0.38 to 6.1% Ro) indicating thermal conditions ranging from diagenesis to incipient rock metamorphism. Raman spectral analysis reveals systematic changes of both the first- and second-order spectrum with increasing thermal maturity. These changes include a pronounced increase in the D/O peak height ratio accompanied by a narrowing of the D peak, a gradual decrease in the D/O peak width ratio, and a shift of both peaks toward higher wave numbers. Second-order Raman peaks, though less intensive, also show systematic peak shifting as a function of Ro. These empirical results underscore the high potential of Raman spectrometry as a fast and reliable geothermometer of mature to supermature hydrocarbon source rocks, and as an indicator of thermal maturity levels within the anchizone. |
| Genre: | Article |
| ProdID: | 70020417 |
| Citation Author: | Spotl, C.; W. , Houseknecht, D.; Jaques, R. C. |
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| Citation End Page: | 542 |
| Citation Issue: | 9-10 |
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| Citation Language: | English |
| Citation Larger Work Title: | Organic Geochemistry |
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| Citation Number Of Pages: | 8 |
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| Citation Publisher: | Elsevier Sci Ltd |
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| Citation Search Results Text: | Kerogen maturation and incipient graphitization of hydrocarbon source rocks in the Arkoma Basin, Oklahoma and Arkansas: A combined petrographic and Raman spectrometric study; 1998; Article; Journal; Organic Geochemistry; Spotl, C.; W. , Houseknecht, D.; Jaques, R. C. |
| Citation Start Page: | 535 |
| Citation Volume: | 28 |
| Citation Year: | 1998 |
| Type: | citation/reference |
| Text: | Kerogen maturation and incipient graphitization of hydrocarbon source rocks in the Arkoma Basin, Oklahoma and Arkansas: A combined petrographic and Raman spectrometric study; 1998; Article; Journal; Organic Geochemistry; Spotl, C.; W. , Houseknecht, D.; Jaques, R. C. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1016/S0146-6380(98)00021-7 |
| Date Other: | Thu, 1 Jan 1998 00:00 -0600 |
| Publisher: | Elsevier Sci Ltd |
