The Henryville Bed of the New Albany shale—I. Preliminary characterization of the nickel and vanadyl porphyrins in the bitumen
Identifieur interne : 001248 ( Main/Exploration ); précédent : 001247; suivant : 001249The Henryville Bed of the New Albany shale—I. Preliminary characterization of the nickel and vanadyl porphyrins in the bitumen
Auteurs : Gary J. Van Berkel [États-Unis] ; J. Martin E. Quirke [États-Unis] ; Royston H. Filby [États-Unis]Source :
- Organic Geochemistry [ 0146-6380 ] ; 1989.
Abstract
The nickel, vanadium, Ni(II) porphyrin and VO(II) porphyrin concentrations in the bitumen of an organic rich sample of the Henryville Bed of the New Albany shale (Mississippian-Devonian; Indiana, U.S.A.) were determined. The bitumen contains 1776 μg nickel/g and 1550 μg vanadium/g bitumen. The porphyrin concentrations of 9900 μg/g and 9100 μg/g, respectively, are higher than those reported in most source rock bitumens or crude oils. The similar abundances of Ni(II) and VO(II) porphyrins indicates a depositional environment for this sample that is transitional between strongly anoxic (VO(II) porphyrins dominant) and less anoxic in which Ni(II) porphyrins dominate. The Ni(II) and VO(II) porphyrins in the bitumen occur as etioporphyrin (etio), deoxophylloerythroetioporphyrin (DPEP), and tetrahydrobenzo-DPEP (THBD) species in the order of abundance: etio>DPEP>THBD for Ni(II) and DPEP>etio>THBD for VO(II) porphyrins. The DPEP/etio ratios of 1.4 for the VO(II) series and 0.91 for the Ni(II) series and a Vitrinite reflectance of 0.5–0.6% are consistent with the organic matter in the New Albany shale being of intermediate maturity. The carbon-number distributions of the etio, DPEP, and THBD porphyrins of the two metals are very similar. This similarity and the fact that carbon numbers of both Ni(II) and VO(II) porphyrins extend at least to C36 suggests that the Ni(II) and VO(II) porphyrins have originated via similar geochemical pathways in the New Albany shale. The major pathway appears to be release of the porphyrins during kerogen catagenesis.
Url:
DOI: 10.1016/0146-6380(89)90066-1
Affiliations:
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Filby</name><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Chemistry and Nuclear Radiation Center, Washington State University, Pullman, WA 99164-1300</wicri:regionArea><placeName><region type="state">Washington (État)</region></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Organic Geochemistry</title><title level="j" type="abbrev">OG</title><idno type="ISSN">0146-6380</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1989">1989</date><biblScope unit="volume">14</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="119">119</biblScope><biblScope unit="page" to="128">128</biblScope></imprint><idno type="ISSN">0146-6380</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0146-6380</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The nickel, vanadium, Ni(II) porphyrin and VO(II) porphyrin concentrations in the bitumen of an organic rich sample of the Henryville Bed of the New Albany shale (Mississippian-Devonian; Indiana, U.S.A.) were determined. The bitumen contains 1776 μg nickel/g and 1550 μg vanadium/g bitumen. The porphyrin concentrations of 9900 μg/g and 9100 μg/g, respectively, are higher than those reported in most source rock bitumens or crude oils. The similar abundances of Ni(II) and VO(II) porphyrins indicates a depositional environment for this sample that is transitional between strongly anoxic (VO(II) porphyrins dominant) and less anoxic in which Ni(II) porphyrins dominate. The Ni(II) and VO(II) porphyrins in the bitumen occur as etioporphyrin (etio), deoxophylloerythroetioporphyrin (DPEP), and tetrahydrobenzo-DPEP (THBD) species in the order of abundance: etio>DPEP>THBD for Ni(II) and DPEP>etio>THBD for VO(II) porphyrins. The DPEP/etio ratios of 1.4 for the VO(II) series and 0.91 for the Ni(II) series and a Vitrinite reflectance of 0.5–0.6% are consistent with the organic matter in the New Albany shale being of intermediate maturity. The carbon-number distributions of the etio, DPEP, and THBD porphyrins of the two metals are very similar. This similarity and the fact that carbon numbers of both Ni(II) and VO(II) porphyrins extend at least to C36 suggests that the Ni(II) and VO(II) porphyrins have originated via similar geochemical pathways in the New Albany shale. The major pathway appears to be release of the porphyrins during kerogen catagenesis.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country><region><li>Floride</li><li>Tennessee</li><li>Washington (État)</li></region></list><tree><country name="États-Unis"><region name="Washington (État)"><name sortKey="Van Berkel, Gary J" sort="Van Berkel, Gary J" uniqKey="Van Berkel G" first="Gary J." last="Van Berkel">Gary J. Van Berkel</name></region><name sortKey="Filby, Royston H" sort="Filby, Royston H" uniqKey="Filby R" first="Royston H." last="Filby">Royston H. Filby</name><name sortKey="Quirke, J Martin E" sort="Quirke, J Martin E" uniqKey="Quirke J" first="J. Martin E." last="Quirke">J. Martin E. Quirke</name><name sortKey="Van Berkel, Gary J" sort="Van Berkel, Gary J" uniqKey="Van Berkel G" first="Gary J." last="Van Berkel">Gary J. Van Berkel</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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