| DOI: | 10.1306/11020909072
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| Scopus记录号: | 2-s2.0-78650373278
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| 论文题名: | Delta-front hyperpycnal bed geometry and implications for reservoir modeling: Cretaceous Panther Tongue delta, Book Cliffs, Utah |
| 作者: | Olariu C.; Steel R.J.; Petter A.L.
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| 刊名: | AAPG Bulletin
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| ISSN: | 0149-1932
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| EISSN: | 1558-9662
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| 出版年: | 2010
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| 发表日期: | 2010
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| 卷: | 94, 期:6 | | 起始页码: | 819
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| 结束页码: | 845
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| 语种: | 英语
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| Scopus关键词: | Deepwater
; Depositional environment
; Distributary channels
; Hyperpycnal
; Hyperpycnal flows
; Paleocurrents
; Reservoir modeling
; River deltas
; Short distances
; Anoxic sediments
; Deposits
; Geometry
; Landforms
; Reservoirs (water)
; Sedimentology
; Structural geology
; Turbidity
; Sandstone
; Cretaceous
; deep water
; delta
; depositional environment
; flooding
; fluvial deposit
; geometry
; heterogeneity
; numerical model
; outcrop
; reservoir
; sandstone
; turbidity
; Book Cliffs
; United States
|
| Scopus学科分类: | Energy
; Earth and Planetary Sciences
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| 英文摘要: | The Cretaceous Panther Tongue has an upward-coarsening and -thickening pattern and is well exposed in extensive large outcrops in the Book Cliffs area, west-central Utah. The deposits have been interpreted as having formed in a fluvial-dominated river delta environment that generated highly sediment-concentrated sustained (turbidity) flows during flooding, producing hyperpycnalflow deposits on the delta front despite some resemblance to deep-water turbidites. The facies associations indicate terminal distributary channel, channel mouth, and proximal delta-front and distal delta-front depositional environments. The measured paleocurrents indicate a south-southwest transport of the sediments. The thickness of the hyperpycnal sandstone beds ranges from centimeters to meters. Sandstones are characteristically parallel laminated, sometimes structureless or rarely display inclined strata of cut-and-fill type. The sandstone hyperpycnal beds dominate the delta-front clinoforms and dip southward, consistent with the other paleocurrent indicators. Individual sandstone beds in the clinoforms have dips that range from 0.1° on the distal delta front (lower part of the outcrops) to 3° in the proximal parts (upper part of the outcrops). The hyperpycnal beds can be traced from a proximal mouth-bar environment to the distal delta front over a distance of hundreds of meters. As individual beds extend from mouth bar to distal delta-front environments, they become systematically finer grained and thinner. Over short distances (hundreds of meters), the beds thin with rates ranging between 0.0001 (i.e., dm/km) to 0.02 (i.e., tens of meters per kilometer). The sandstone beds thin to a greater degree in a dip direction than along strike, indicating a relatively strike-elongate (flow-normal) geometry of the hyperpycnal flows and of the delta lobes. The wider than longer geometry of the delta-front beds requires that reservoir development be more focused upon the downdip fades changes (heterogeneities) than the lateral (along strike) heterogeneities. Copyright ©2010. The American Association of Petroleum Geologists. All rights reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-78650373278&doi=10.1306%2f11020909072&partnerID=40&md5=89e3a442f30f0510cca83c4e8674c83e
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/13501
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| 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: | |
Olariu C.,Steel R.J.,Petter A.L.. Delta-front hyperpycnal bed geometry and implications for reservoir modeling: Cretaceous Panther Tongue delta, Book Cliffs, Utah[J]. AAPG Bulletin,2010-01-01,94(6)
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