DOI: 10.1306/07130909013
Scopus记录号: 2-s2.0-76749108114
论文题名: Allochthonous prodeltaic sediment facies in the lower cretaceous at the tantallon M-41 well: Implications for the deep-water Scotian Basin
作者: Piper D.J.W. ; Noftall R. ; Pe-Piper G.
刊名: AAPG Bulletin
ISSN: 0149-1954
EISSN: 1558-9684
出版年: 2010
发表日期: 2010
卷: 94, 期: 1 起始页码: 87
结束页码: 104
语种: 英语
Scopus关键词: Debris flows
; Deep Water
; Early Cretaceous
; Hyperpycnal flows
; Landsliding
; Lithofacies
; Lower Cretaceous
; Microfossils
; Piston cores
; Sea floor
; Sediment deformation
; Sediment facies
; Sedimentary structure
; Shallow-water
; Through channel
; Turbidity current
; Bathymetry
; Debris
; Fading channels
; Ocean currents
; Sandstone
; Sediment transport
; Turbidity
; Sedimentology
; allochthon
; Cretaceous
; debris flow
; deep water
; deformation
; depositional environment
; facies
; landslide
; microfossil
; mudstone
; sandstone
; seafloor
; turbidity
; water depth
; Scotland
; United Kingdom
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Lower Cretaceous shelf-margin deltas in the Scotian Basin prograded across a deep outer-shelf platform and may have supplied sand to the deep-water Scotian margin. Conventional core from the Tantallon M-41 well was used to evaluate sediment faciès and evidence for the transfer of deltaic sand to deep water. Two cores with shallow-water lithofacies show sediment deformation structures, resulting from surficial debris flow and deeper seated landsliding of deltaic sediment, interpreted by a comparison with modern sea-floor piston cores. Both massmovement types produced a basal strongly foliated mudstone. Such allochthonous blocks create potential pitfalls in interpretation of paleowater depth from sedimentary structures in conventional core and microfossils in ditch cuttings. Autochthonous sediment on the deep outer-shelf platform is a distinctive red-brown mudstone with rare turbidite sandstone beds. The deepest core consists of thin-bedded sandstone turbidites showing Bouma Tb-c-d intervals and fading ripples characteristic of overbank settings, deposited on a high adjacent to 50-150-m (160-500-ft)-deep channels. These sandstones provide direct evidence that sand was transferred through channels into deep water in the Early Cretaceous. Sandy turbidity currents were sourced both by prodeltaic failure and transformation and by hyperpycnal flow from the mountainous rivers that supplied sediment to the Scotian Basin. ©Her Majesty the Queen in Right of Canada 2010. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-76749108114&doi=10.1306%2f07130909013&partnerID=40&md5=dfbd1a22a056be63e98fe504ee2cb694
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13523
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:
Piper D.J.W.,Noftall R.,Pe-Piper G.. Allochthonous prodeltaic sediment facies in the lower cretaceous at the tantallon M-41 well: Implications for the deep-water Scotian Basin[J]. AAPG Bulletin,2010-01-01,94(1)