Reconstructing large-scale remobilisation of deep-water deposits and its impact on sand-body architecture from cored wells: The Lower Cretaceous Britannia Sandstone Formation, UK North Sea

Eggenhuisen, Joris T.; McCaffrey, William D.; Haughton, Peter D. W.; Butler, Robert W.; Moore, Ian; Jarvie, A. W. P.; Hakes, William G.

doi:10.1016/j.marpetgeo.2010.04.005

Cited by 23 publications

(24 citation statements)

References 22 publications

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“…They also include beds in which clast-rich muddy sandstones pass laterally over 10s to 100s m into clean sandstones with isolated or nests of mudstone clasts, or into clean sandstones devoid of mudstone clasts. The H3 divisions show significant lateral heterogeneity and none have sand-speckled mudstones ("starry night" textures) associated with well-mixed and far-travelled debris flows (Barker, 2008;Eggenhuisen et al, 2010). Mechanisms involving either simultaneous triggering of turbidity currents and debris flows from proximal slopes or partial transformation of a debris flow to a turbidity current are therefore ruled out in these cases.…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

Short length-scale variability of hybrid event beds and its applied significance

Fonnesu

Haughton

Felletti

et al. 2015

Marine and Petroleum Geology

107

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Please cite this article as: Fonnesu, M., Haughton, P., Felletti, F., McCaffrey, W., Short length-scale variability of hybrid event beds and its applied significance, Marine and Petroleum Geology (2015), doi: 10.1016/j.marpetgeo.2015.03.028. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

Short length-scale variability of hybrid event beds and its applied significance

Fonnesu

Haughton

Felletti

et al. 2015

Marine and Petroleum Geology

107

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“…8a), indicating a two-stage formation that reworks the banded slurry facies described above. Lowe et al (2003) and Eggenhuisen et al (2010b) suggested that the reworking of the banded slurry facies happened by post-depositional creep rather than processes associated with turbidity current activity. This original interpretation cannot be ruled out, largely because of the scale of remobilization and the limitations of well-core in constraining lateral variations in bed structure.…”

Section: Mixed Slurry Faciesmentioning

confidence: 99%

Interpreting syndepositional sediment remobilization and deformation beneath submarine gravity flows; a kinematic boundary layer approach

Butler

Eggenhuisen

Haughton

et al. 2015

JGS

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Turbidite sandstones and related deposits commonly contain deformation structures and remobilized sediment that might have resulted from post-depositional modification such as downslope creep (e.g. slumping) or density-driven loading by overlying deposits. However, we consider that deformation can occur during the passage of turbidity currents that exerted shear stress on their substrates (whether entirely pre-existing strata, sediment deposited by earlier parts of the flow itself or some combination of these). Criteria are outlined here, to avoid confusion with products of other mechanisms (e.g. slumping or later tectonics), which establish the synchronicity between the passage of overriding flows and deformation of their substrates. This underpins a new analytical framework for tracking the relationship between deformation, deposition and the transit of the causal turbidity current, through the concept of kinematic boundary layers. Case study examples are drawn from outcrop (Miocene of New Zealand, and Apennines of Italy) and subsurface examples (Britannia Sandstone, Cretaceous, UK Continental Shelf). Example structures include asymmetric flame structures, convolute lamination, some debritic units and injection complexes, together with slurry and mixed slurry facies. These structures may provide insight into the rheology and dynamics of submarine flows and their substrates, and have implications for the development of subsurface turbidite reservoirs.

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“…To better understand accommodation space as a function of MTD geometry and internal structure, the interaction between MTDs and turbidity currents has been documented in a number of studies based on outcrop analogues (e.g., Shultz et al 2005;Lucente and Pini 2008;Jackson and Johnson 2009), seismic data (e.g., Kertznus 2009;Bernhardt et al 2012;Masalimova et al 2015;Ortiz-Karpf et al 2015;Kneller et al 2016), bathymetric data (Corella et al 2016), well and core data (Eggenhuisen et al 2010;Corella et al 2016), and numerical models (Stright et al 2013). These studies have shown that turbidity flows can deposit upstream and above MTDs (e.g., Bernhardt et al 2012;Ortiz-Karpf et al 2015;Corella et al 2016), or, instead, can be erosive to create large-scale scours above MTDs (e.g., Shultz et al 2005).…”

Section: Introductionmentioning

confidence: 99%

The Role of Mass Wasting In the Progressive Development Of Submarine Channels (Espírito Santo Basin, Se Brazil)

Qin

Alves

Constantine

et al. 2017

Journal of Sedimentary Research

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ABSTRACT:A Pliocene-Quaternary submarine channel system, influenced by a localized mass wasting, is investigated in this work using high-resolution 3D seismic data from offshore Espírito Santo Basin, SE Brazil. Three abandoned channels, a channel belt and an mass-transport deposit (MTD) are recognized in the channel system within a confluence region confined by salt diapirs. In this confluence region, the cross-sectional area (CSA) of the channel system can be up to 1.2 km 2 , i.e., 4 to 10 times larger than CSA in other parts of the channel system. Such significant changes in the architecture and morphology of the channel system resulted from the interaction between mass-wasting processes and turbidity flows. We postulate that a basal erosional scar was created by mass-wasting processes and was filled with an MTD. This basal scar was then used as a preferential pathway for turbidity flows, which were captured by its headwall and lateral margins. The interpreted data shows that the captured turbidity flows greatly widened the basal scar, but caused only small modifications in scar height. Part of the MTD within the basal scar was removed downslope by turbidity flows, and was replaced by channel-fill deposits. This paper shows a flow-capture process occurred in a confluence region on continental slope. Basal scars can capture turbidity flows and facilitate flow channelization, which is a key process for submarine-channel initiation. The replacement of MTD by channel-fill deposits has profound implications for reservoir volumes and net-to-gross ratios in channel systems and partly depends on the turbidity-flows properties, such as their erosive ability and frequency. The more erosive and frequent flows are captured by the basal scar, the larger is the accommodation space created for succeeding sand-prone turbidites.

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Reconstructing large-scale remobilisation of deep-water deposits and its impact on sand-body architecture from cored wells: The Lower Cretaceous Britannia Sandstone Formation, UK North Sea

Cited by 23 publications

References 22 publications

Short length-scale variability of hybrid event beds and its applied significance

Short length-scale variability of hybrid event beds and its applied significance

Interpreting syndepositional sediment remobilization and deformation beneath submarine gravity flows; a kinematic boundary layer approach

The Role of Mass Wasting In the Progressive Development Of Submarine Channels (Espírito Santo Basin, Se Brazil)

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