U.S. Department of EnergyOffice of Scientific and Technical Information
Geochemical study of the organic matter from Querecual formation, Anzoategui State, Venezuela
Abstract
Kerogen and bitumen fractions extracted from twenty-one limestone samples from kind section of Querecual formation (Querecual River, Anzoategui State, Venezuela) were analyzed for their content of Co, Cr, Fe, Mn, Mo, Ni, S, Sr, V and Zn. S and trace-metals content from the kerogen fraction were used to obtain information about paleoenvironmental sedimentation conditions of the Querecual formation. Based on these data, and especially on the V and S content variations plus V/Ni, VIV+Ni and Mo/Mo+Cr ratios, we confirm an ancient-reducer condition on this region according with a sulfur-reducer environment. Trace-metals content variations from the bitumen fraction along the study section were used as possible primary migration indicators. V and Ni were the only elements showing a clear tendency to be used as primary migration indicators. The observed tendency allows us to postulate a vertical migration of the bitumen, from center to the extremes of the section.
- Authors:
-
- Universidad Central de Venezuela, Caracas (Venezuela)
- Publication Date:
- OSTI Identifier:
- 421242
- Report Number(s):
- CONF-9609255-
Journal ID: AABUD2; ISSN 0149-1423; TRN: 96:005770-0231
- Resource Type:
- Journal Article
- Journal Name:
- AAPG Bulletin
- Additional Journal Information:
- Journal Volume: 80; Journal Issue: 8; Conference: American Association of Petroleum Geologists (AAPG) international conferences and exhibition, Caracas (Venezuela), 8-11 Sep 1996; Other Information: PBD: Aug 1996
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 02 PETROLEUM; VENEZUELA; STRATIGRAPHY; PETROLEUM; EXPLORATION; MIGRATION; LIMESTONE; KEROGEN; BITUMENS
Citation Formats
Garban, G, Lopez, L, Lo Monaco, S, and Lira, A. Geochemical study of the organic matter from Querecual formation, Anzoategui State, Venezuela. United States: N. p., 1996.
Web.
Garban, G, Lopez, L, Lo Monaco, S, & Lira, A. Geochemical study of the organic matter from Querecual formation, Anzoategui State, Venezuela. United States.
Garban, G, Lopez, L, Lo Monaco, S, and Lira, A. 1996.
"Geochemical study of the organic matter from Querecual formation, Anzoategui State, Venezuela". United States.
@article{osti_421242,
title = {Geochemical study of the organic matter from Querecual formation, Anzoategui State, Venezuela},
author = {Garban, G and Lopez, L and Lo Monaco, S and Lira, A},
abstractNote = {Kerogen and bitumen fractions extracted from twenty-one limestone samples from kind section of Querecual formation (Querecual River, Anzoategui State, Venezuela) were analyzed for their content of Co, Cr, Fe, Mn, Mo, Ni, S, Sr, V and Zn. S and trace-metals content from the kerogen fraction were used to obtain information about paleoenvironmental sedimentation conditions of the Querecual formation. Based on these data, and especially on the V and S content variations plus V/Ni, VIV+Ni and Mo/Mo+Cr ratios, we confirm an ancient-reducer condition on this region according with a sulfur-reducer environment. Trace-metals content variations from the bitumen fraction along the study section were used as possible primary migration indicators. V and Ni were the only elements showing a clear tendency to be used as primary migration indicators. The observed tendency allows us to postulate a vertical migration of the bitumen, from center to the extremes of the section.},
doi = {},
url = {https://www.osti.gov/biblio/421242},
journal = {AAPG Bulletin},
number = 8,
volume = 80,
place = {United States},
year = {Thu Aug 01 00:00:00 EDT 1996},
month = {Thu Aug 01 00:00:00 EDT 1996}
}
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