Biomarkers, carbon isotopic composition and source rock potentials of Awgu coals, middle Benue trough, Nigeria

被引：15

作者：

Adedosu, Taofik A. ^{[1
]}

Sonibare, Oluwadayo O. ^{[2
]}

Tuo, Jincai ^{[3
]}

Ekundayo, Olusegun ^{[2
]}

机构：

[1] Ladoke Akintola Univ Technol, Dept Chem, Ogbomosho, Nigeria

[2] Univ Ibadan, Dept Chem, Petr & Environm Geochem Res Grp, Ibadan, Nigeria

[3] Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Lanzhou 730000, Gansu, Peoples R China

来源：

JOURNAL OF AFRICAN EARTH SCIENCES | 2012年 / 66-67卷

关键词：

Hydrocarbon generation; Source rock; Biomarkers; Coal; Thermal maturity; PALEOENVIRONMENTAL RECONSTRUCTION; GEOCHEMICAL INDICATORS; ORGANIC GEOCHEMISTRY; TERTIARY OILS; PARIS BASIN; CRUDE OILS; SEDIMENTS; MATURITY; ALKANES; SHALES;

D O I：

10.1016/j.jafrearsci.2012.03.006

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Coal and carbonaceous shale samples were collected from two boreholes (BH 94 and BH 120) in Awgu formation of Middle Benue Trough, Nigeria. Source rock potentials of the samples were studied using biomarkers and carbon isotopic composition. Biomarkers in the aliphatic fractions in the samples were studied using Gas Chromatography-Mass Spectrometry (GC-MS). The Carbon isotope analysis of individual n-alkanes in the aliphatic fraction was performed using Gas Chromatography-Combustion-Isotope Ratio Mass Spectrometer (GC-IRMS). The abundance of hopanes, homohopanes (C-31-C-35), and C-29 steranes in the samples indicate terrestrial plant, phytoplankton and cyanobacteria contributions to the organic matter that formed the coal. High (Pr/Ph) ratio (3.04-11.07) and isotopic distribution of individual alkanes showed that the samples consisted of mixed terrestrial/marine organic matter deposited under oxic condition in lacustrine-fluvial/deltaic depositional environment. The maturity parameters derived from biomarker distributions showed that the samples are in the main phase of oil window. (c) 2012 Elsevier Ltd. All rights reserved.

引用

页码：13 / 21

页数：9

共 15 条

[1] Hydrocarbon generation potentials of the Awgu shale, lower Benue Trough, Nigeria
Anyiam, Okwudiri Aloysius
Onuoha, Kalu Mosto
Jolly, Byami Andrew
[J]. JOURNAL OF THE GEOLOGICAL SOCIETY OF INDIA, 2014, 83 (03) : 303 - 310
[2] Hydrocarbon generation potentials of the Awgu shale, lower Benue Trough, Nigeria
Okwudiri Aloysius Anyiam
Kalu Mosto Onuoha
Byami Andrew Jolly
[J]. Journal of the Geological Society of India, 2014, 83 : 303 - 310
[3] Liquid hydrocarbon source-rock potential of mid-Cretaceous coals and coal measures in the Middle Benue Trough of Nigeria
N. G. Obaje
H. Hamza
[J]. International Journal of Earth Sciences, 2000, 89 : 130 - 139
[4] Liquid hydrocarbon source-rock potential of mid-Cretaceous coals and coal measures in the Middle Benue Trough of Nigeria
Obaje, NG
Hamza, H
[J]. INTERNATIONAL JOURNAL OF EARTH SCIENCES, 2000, 89 (01) : 130 - 139
[5] PETROGRAPHIC COMPOSITION AND DEPOSITIONAL-ENVIRONMENTS OF CRETACEOUS COALS AND COAL MEASURES IN THE MIDDLE BENUE TROUGH OF NIGERIA
OBAJE, NG
LIGOUIS, B
ABAA, SI
[J]. INTERNATIONAL JOURNAL OF COAL GEOLOGY, 1994, 26 (3-4) : 233 - 260
[6] Maceral associations, organic maturation and coal-derived hydrocarbon potential in the Cretaceous Awgu Formation, Middle Benue Trough, Nigeria
Obaje, NG
Funtua, II
Ligouis, B
Abaa, SI
[J]. JOURNAL OF AFRICAN EARTH SCIENCES, 1996, 23 (01): : 89 - 94
[7] Paleo-productivity and petroleum source evaluation of the Nkporo and Awgu shales, Lower Benue Trough, Nigeria: Insight from inorganic geochemistry
Madukwe, Henry Yemagu
Adegoke, Adebanji Kayode
Adeleye, Mutiu Adesina
Aturamu, Adeyinka Oluyemi
[J]. ENERGY GEOSCIENCE, 2023, 4 (03):
[8] Hydrocarbon potential of Cretaceous sediments in the Lower and Middle Benue Trough, Nigeria: Insights from new source rock facies evaluation
Akande, Samuel O.
Egenhoff, Sven O.
Obaje, Nuhu G.
Ojo, Olusola J.
Adekeye, Olabisi A.
Erdtmann, Bernd D.
[J]. JOURNAL OF AFRICAN EARTH SCIENCES, 2012, 64 : 34 - 47
[9] Nasara-I well, Gongola Basin (Upper Benue Trough, Nigeria): Source-rock evaluation
Obaje, NG
Wehner, H
Abubakar, MB
Isah, MT
[J]. JOURNAL OF PETROLEUM GEOLOGY, 2004, 27 (02) : 191 - 206
[10] INSTRUMENTAL NEUTRON-ACTIVATION ANALYSIS OF SOME ROCK SAMPLES FROM AKWANA AND ARUFU AREAS, MIDDLE BENUE TROUGH, NIGERIA
DIM, LA
ADETUNJI, J
OKUJENI, CD
[J]. JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES, 1993, 168 (01): : 101 - 106

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