DOI: 10.1306/07121111028
Scopus记录号: 2-s2.0-84857804527
论文题名: Petrological and geochemical investigations of potential source rocks of the central Congo Basin, Democratic Republic of Congo
作者: Sachse V.F. ; Delvaux D. ; Littke R.
刊名: AAPG Bulletin
ISSN: 0149-1793
EISSN: 1558-9523
出版年: 2012
发表日期: 2012
卷: 96, 期: 2 起始页码: 245
结束页码: 275
语种: 英语
Scopus关键词: Biological markers
; Congo basins
; Democratic Republic of Congo
; Depositional environment
; Early Paleozoic
; Flame ionization detection
; Gas generation
; Geochemical investigations
; Heating temperatures
; Mesozoic
; Neoproterozoic
; Organic geochemistry
; Paleozoic
; Potential sources
; Production index
; Rock-Eval
; Total inorganic carbon
; Total Organic Carbon
; Total sulfur
; Vitrinite reflectance
; Anoxic sediments
; Gas chromatography
; Geochronology
; Hydrocarbons
; Hydrogen
; Kerogen
; Mass spectrometry
; Organic carbon
; Sulfur
; Geochemistry
; biomarker
; Carboniferous
; chemical composition
; depositional environment
; economic geology
; inorganic carbon
; kerogen
; Mesozoic
; outcrop
; Paleozoic
; Permian
; petrology
; sediment chemistry
; source rock
; stratigraphy
; total organic carbon
; Congo
; Congo Basin
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Paleozoic and Mesozoic outcrop and core samples (Remina Dekese and Remina Samba wells) covering various strati-graphic intervals from the central Congo Basin were analyzed for total organic carbon (C org), total inorganic carbon (C inorg), and total sulfur content. Rock-Eval analysis and vitrinite reflectance (R o) measurements were performed on the basis of the C org content. Fifteen samples were chosen for molecular organic geochemistry. Nonaromatic hydrocarbons (HCs) were analyzed by gas chromatography (GC)-flame ionization detection and GC-mass spectrometry. Samples of the Alolo shales from the Aruwimi Group (Lindi Supergroup, late Neoproterozoic to early Paleozoic) are in general very poor in C org (most samples <0.5%) and contain a high amount of degraded organic matter (OM). All samples of this group revealed a type III to IV kerogen and cannot be considered as a potential source rock. Permian-Carboniferous sediments from the Lukuga Group (Dekese well and outcrop samples) contain moderate contents of organic carbon (<2%). The Trnax values (heating temperature at which the top peak of S2 occurs) indicate early mature OM, partly also a higher level of maturity because of Rq (0.6-0.7%) and production index values (S 1/S 1 + S 2 < 0.2). All samples contain hydrogen-poor type III to IV kerogen with low HC generation potential, only having a very minor gas generation potential. The kinds of OM, as well as the biological markers, indicate a terrestrial-dominated depositional environment. Copyright © 2012. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84857804527&doi=10.1306%2f07121111028&partnerID=40&md5=01a573df6dcfa9e98ba4d65c58a6686b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13363
Appears in Collections: 过去全球变化的重建 影响、适应和脆弱性 科学计划与规划 气候变化与战略 全球变化的国际研究计划 气候减缓与适应 气候变化事实与影响
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Recommended Citation:
Sachse V.F.,Delvaux D.,Littke R.. Petrological and geochemical investigations of potential source rocks of the central Congo Basin, Democratic Republic of Congo[J]. AAPG Bulletin,2012-01-01,96(2)