DOI: 10.1306/10191515029
Scopus记录号: 2-s2.0-84968756825
论文题名: Sandstone provenance and insights into the paleogeography of the McMurray Formation from detrital zircon geochronology, Athabasca Oil Sands, Canada
作者: Benyon C. ; Leier A.L. ; Leckie D.A. ; Hubbard S.M. ; Gehrels G.E.
刊名: AAPG Bulletin
ISSN: 0149-1427
EISSN: 1558-9157
出版年: 2016
发表日期: 2016
卷: 100, 期: 2 起始页码: 269
结束页码: 287
语种: 英语
Scopus关键词: Deposition
; Deposits
; Geochronology
; Lead
; Oil fields
; Oil sands
; Sandstone
; Silicate minerals
; Zircon
; Athabasca oil sands
; Canadian shields
; Eastern north america
; Fluvial channel deposits
; Lower Cretaceous
; McMurray formations
; Sandstone samples
; Sedimentary provenance
; Zircon deposits
; bitumen
; chronostratigraphy
; Cretaceous
; deposition
; fluvial deposit
; geochronology
; lead
; paleogeography
; sampling
; sandstone
; uranium
; zircon
; Alberta
; Athabasca
; Athabasca Oil Sands
; Canada
; Cordillera
; Paraguay
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: The Lower Cretaceous McMurray Formation of northeastern Alberta hosts most of the bitumen resources of the Athabasca Oil Sands. Despite its importance, the sedimentary provenance and corresponding Early Cretaceous paleodrainage system associated with these fluvial deposits remain poorly understood. We collected 18 sandstone samples from five cored wells drilled in the McMurray Formation and analyzed these for detrital zircon uranium-lead (U-Pb) geochronology. Together, these samples yield detrital zircon U-Pb age populations of less than 250, 300-600, 1000-1200, 1800-1900, and 2600-2800 Ma. Almost all of the samples contain detrital zircons with ages of 300-600 and 1000-1200 Ma, which were originally derived from the Appalachian and Grenville provinces, respectively, of eastern North America. Lowermost strata of the McMurray Formation are characterized by relatively small fluvial channel deposits and detrital zircon ages of 1800-1900 and 2600-2800 Ma, which suggest a limited paleodrainage area that includes the adjacent Canadian shield. In contrast, channel deposits in the middle-upper part of the formation are relatively large and contain abundant Appalachian- and Grenville-derived detrital zircons. These data suggest that the paleodrainage system of the McMurray Formation evolved over time, increasing in size between deposition of the lowermost units and the middle-upper deposits. Detrital zircons from the Appalachian and Grenville regions may have been transported directly to western Canada during the Cretaceous or recycled multiple times prior to their deposition. Detrital zircons from the Cordillera (<250 Ma) are restricted to the northern part of the study area, which suggests that a tributary may have joined the main trunk fluvial system in this area. © Copyright 2016. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84968756825&doi=10.1306%2f10191515029&partnerID=40&md5=08eccd38ca802acd6224c75980026fcd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/12998
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:
Benyon C.,Leier A.L.,Leckie D.A.,et al. Sandstone provenance and insights into the paleogeography of the McMurray Formation from detrital zircon geochronology, Athabasca Oil Sands, Canada[J]. AAPG Bulletin,2016-01-01,100(2)