| DOI: | 10.1306/05071514025
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| Scopus记录号: | 2-s2.0-84947421954
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| 论文题名: | Stratigraphic architecture of fluvial deposits from borehole images, spectral-gamma-ray response, and outcrop analogs, Piceance Basin, Colorado |
| 作者: | Keeton G.I.; Pranter M.J.; Cole R.D.; Gustason E.R.
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| 刊名: | AAPG Bulletin
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| ISSN: | 0149-1457
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| EISSN: | 1558-9187
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| 出版年: | 2015
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| 发表日期: | 2015
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| 卷: | 99, 期:10 | | 起始页码: | 1929
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| 结束页码: | 1956
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| 语种: | 英语
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| Scopus关键词: | Stratigraphy
; Architectural element
; Architectural Element Types
; Fluvial deposits
; Fluvial reservoirs
; Spectral gamma rays
; Stratigraphic architecture
; Stratigraphic data
; Upper Cretaceous
; Gamma rays
; borehole logging
; channel flow
; core analysis
; Cretaceous
; dune formation
; fluvial deposit
; gamma ray spectrometry
; lithofacies
; lithostratigraphy
; outcrop
; spectral analysis
; Colorado
; Piceance Basin
; United States
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| Scopus学科分类: | Energy
; Earth and Planetary Sciences
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| 英文摘要: | Lithofacies, architectural-element abundance, and estimates of dune-bedform height and channel sinuosity from borehole images (BHIs) and well-exposed outcrops allow for an expanded interpretation of the fluvial stratigraphic architecture of the Upper Cretaceous Williams Fork Formation. Sedimentologic and stratigraphic data from outcrops and detailed core descriptions of the Williams Fork Formation, Piceance Basin, Colorado, were used to compare attributes of fluvial architectural elements to BHI characteristics and spectral-gamma-ray (SGR) log motifs. Results show a distinct set of criteria based on BHIs that aid in the interpretation of lithofacies and fluvial reservoir architecture. In contrast, a practical correlation does not exist between outcrop- and core-derived SGR log motifs or thorium and potassium abundances and fluvial lithofacies or architectural elements. Four electrofacies based on BHI characteristics (e.g., dip type, dip pattern, and color scheme) represent the most common fluvial lithofacies and are identified through comparison of paired, calibrated BHIs and core. Cross-bed-set thickness values from BHIs are used to calculate dune height as a proxy for flow energy. The lower and middle Williams Fork Formation represent low-energy meandering and higher energy braided systems, respectively, as evident by changes in channel sinuosity and architectural-element type. The upper Williams Fork Formation is divided into two intervals based on lithofacies, architectural elements, channel sinuosity, and net-to-gross ratio. The subdivision for the upper Williams Fork Formation represents a change from a lower energy, meandering fluvial system to a higher energy, lower sinuosity braided system as related to changes in accommodation through time. © 2015. The American Association of Petroleum Geologists. All rights reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84947421954&doi=10.1306%2f05071514025&partnerID=40&md5=a4adb29debf9865b7c163d4cbe4a976b
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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/13028
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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: | |
Keeton G.I.,Pranter M.J.,Cole R.D.,et al. Stratigraphic architecture of fluvial deposits from borehole images, spectral-gamma-ray response, and outcrop analogs, Piceance Basin, Colorado[J]. AAPG Bulletin,2015-01-01,99(10)
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