DOI: 10.1306/10200909146
Scopus记录号: 2-s2.0-79951536138
论文题名: Migrated oil on Novaya Zemlya, Russian Arctic: Evidence for a novel petroleum system in the eastern Barents Sea and the Kara Sea
作者: Van Koeverden J.H. ; Nakrem H.A. ; Karlsen D.A.
刊名: AAPG Bulletin
ISSN: 0149-1930
EISSN: 1558-9660
出版年: 2010
发表日期: 2010
卷: 94, 期: 6 起始页码: 791
结束页码: 817
语种: 英语
Scopus关键词: Barents sea
; Geochemical characteristic
; Geochemical data
; Index values
; Isoprenoids
; Isotope values
; Kara Sea
; Marine shales
; Microbial degradation
; Migrated oil
; n-Alkanes
; Oleanane
; Organic matter
; Organic sources
; Paleozoic rocks
; Paleozoic strata
; Petroleum migration
; Petroleum systems
; Regional scale
; Sedimentary basin
; Source rocks
; Steranes
; Terpanes
; Tertiary source rocks
; Vitrinite reflectance
; Biodegradation
; Geochemistry
; Isotopes
; Lipids
; Petroleum geology
; Rocks
; Paraffins
; alkane
; biodegradation
; carbon isotope
; Cretaceous
; data set
; geochemical survey
; heterogeneity
; hydrocarbon
; isoprenoid
; organic matter
; Paleozoic
; petroleum
; sedimentary basin
; Tertiary
; vitrinite
; Arctic Ocean
; Arkhangelsk [Russian Federation]
; Barents Sea
; Kara Sea
; Novaya Zemlya
; Russian Federation
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: In this article, we present evidence for the migration of Cretaceous or younger oil into Paleozoic strata on the islands of Novaya Zemlya, Russian Arctic, originating from the surrounding basins of the Barents Sea and the Kara Sea. We thus suggest a novel petroleum system for the greater Barents Sea and Kara Sea regions. Organic geochemical data reveal that medium mature petroleum is hosted in overmature Paleozoic rocks onshore Novaya Zemlya. This petroleum likely migrated from the surrounding offshore sedimentary basins of the Kara and Barents seas into the onshore strata on a broad front, covering 400 km (248 mi) along the archipelago. Thus, the findings describe the remnants of petroleum migration on a regional scale. High maturities of the examined onshore strata (vitrinite reflectance [Ro] of 1.9-4.0% and conodont color alteration index values of 4-6) render the indigenous origin of the medium mature petroleum unlikely. Organic geochemical characteristics of the migrated hydrocarbons lead us to suggest the existence of a hitherto undescribed marine shale source rock with some contribution of terrigeneous organic matter. The δ13C isotope values varying within a range of 5%o for bulk extracts as well as for individual n-alkanes and isoprenoids suggest isotopic heterogeneity of the organic source facies. The source rock units are inferred to have released hydrocarbons mostly at oil window maturities (higher than 0.6% Ro). The occurrence of n-alkanes and isoprenoids, as well as abundant and partially degraded tricyclic terpanes indicates mixed undegraded and heavily biodegraded oil. This suggests several petroleum charges with varying degrees of microbial degradation. Occurrences of oleanane, high ratios of C 28 to C29 steranes and elevated 24-norcholestane and 24-nordiacholestane ratios suggest Cretaceous or Tertiary source rocks. Copyright ©2010. The American Assodation of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-79951536138&doi=10.1306%2f10200909146&partnerID=40&md5=39ed88adaf329c51568e908063645c28
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13499
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:
Van Koeverden J.H.,Nakrem H.A.,Karlsen D.A.. Migrated oil on Novaya Zemlya, Russian Arctic: Evidence for a novel petroleum system in the eastern Barents Sea and the Kara Sea[J]. AAPG Bulletin,2010-01-01,94(6)