Deep-Water Sandstones, Brushy Canyon Formation, West Texas

Beaubouef, R. T.; Rossen, Christine; Zelt, F. B.; Sullivan, Morgan D.; Mohrig, David; Jennette, David C.; Bellian, Jerome A.; Friedman, S. J.; Lovell, R. W.; Shannon, D. S.

doi:10.1306/ce40695

Cited by 82 publications

(32 citation statements)

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“…The silt lenses with current ripples are interpreted as a draped erosion surface (sensu Stevenson et al, 2015), with discontinuous lags of coarse-grained sediment, i.e. aligned floating pebbles interbedded with fine-grained facies (Beaubouef et al, 1999). The draped erosion surface is often observed veneering an erosional basal surface of scourand channel-form bodies (Stevenson et al, 2015, and references within).…”

Section: G6mentioning

confidence: 99%

Processes and typology in Gilbert-type delta bottomset deposits based on outcrop examples in the Corinth Rift

Rubi

Rohais

Bourquin

et al. 2018

Marine and Petroleum Geology

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Middle Pleistocene Gilbert-type delta in the Gulf of Corinth, Greece, has been investigated combining field methods and photo acquisition by drone to generate a high-resolution 3D model. This study case can be used to document four different dynamics in Gilbert-type bottomset deposits, each one of which is characterized by a specific range of facies, facies associations and geometries: (1) the sandy-gravelly bottomset, (2) the erosionalbypass stage, (3) the fine-grained bottomset and (4) the massive-sandy bottomset. By comparing the typologies of the bottomset, we propose a conceptual model that predicts the occurrence of these four different bottomset stage dynamics depending on the stratigraphic context. During highstand normal regression, the gravelly bottomset develops under subcritical flow. The supercritical flow undergoes a stationary hydraulic jump in the toeset due to the slope break. As a result, a low-relief channellevees system is formed in the bottomset. The channels are filled/reworked by backstepping conglomeratic lenses interbedded with silty concave-up and concave-down levees. During normal regression, the foreset beds are steeper than during previous stage and scoured in the upper part. In the bottomset, significant erosion recording sediment bypass downstream toward the pro-delta can be observed. During lowstand normal regression, a starved fine silt to shale bottomset onlaps onto the major erosional surface. The bulk of the coarsegrained sediments is stored in the delta topset and foreset. During the transgressive to highstand stage, the former topset and foreset are eroded by high-density turbidity currents and massive-sandy turbidites are deposited in the bottomset, which onlap onto the foreset beds and form a slope apron geometry in the delta toe. The stratigraphic model improves the prediction for the sand distribution within the various parts of the bottomset. This approach is particularly relevant for clastic depositional systems with high sediment discharge and a high accommodation rate.

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Section: G6mentioning

confidence: 99%

Processes and typology in Gilbert-type delta bottomset deposits based on outcrop examples in the Corinth Rift

Rubi

Rohais

Bourquin

et al. 2018

Marine and Petroleum Geology

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“…, 1994; Sullivan et al. , 2004), the Permian Brushy Canyon Formation, West Texas, USA (Beaubouef et al. , 1999; Carr & Gardner, 2000), the Permian Skoorsteenberg Formation, South Africa (Johnson et al.…”

Section: Introductionmentioning

confidence: 99%

Evolution, architecture and hierarchy of distributary deep‐water deposits: a high‐resolution outcrop investigation from the Permian Karoo Basin, South Africa

2009

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Sea floor and shallow seismic data sets of terminal submarine fan lobes can provide excellent planform timeslices of distributive deep-water systems but commonly only limited information on cross-sectional architecture. Extensive outcrops in the Tanqua depocentre, south-west Karoo Basin, provide these three-dimensional constraints on lithofacies distributions, stacking patterns, depositional geometries and the stratigraphic evolution of submarine lobe deposits at a scale comparable with modern lobe systems. Detailed study (bed-scale) of a single-lobe complex (Fan 3) over a 15 km by 8 km area has helped to define a four-fold hierarchy of depositional elements from bed through to lobe element, lobe and lobe complex. The Fan 3 lobe complex comprises six distinct fine-grained sandstone packages, interpreted as lobes, which display compensational stacking patterns on a 5 km scale. Between successive lobes are thin-bedded, very fine-grained sandstones and siltstones that do not change lithofacies over several kilometres and therefore are identified as a different architectural element. Each lobe is built by many lobe elements, which also display compensational stacking patterns over a kilometre scale. Thickness variations of lobe elements can be extremely abrupt without erosion, particularly in distal areas where isopach maps reveal a finger-like distal fringe to lobes. Lobe deposits, therefore, are not simple radial sheet-dominated systems as commonly envisaged.

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“…This model has provided a conceptual framework for exploration for hydrocarbon reservoirs in deepwater basins for the past15 years or so.This model has also been discussed and applied to a remarkable number of canyon settings worldwide (e.g. Rasmussen, 1994;Poulsen et al, 1998;Beauboeuf et al, 1999;Fulthorpe et al, 2000), but has recently been challenged with evidence suggesting that large volumes of mass-wasting deposits are transported down canyons throughout the entire relative sea level cycle (McHugh & Olson, 2002;.…”

Section: Introductionmentioning

confidence: 99%

3D seismic analysis of slope‐confined canyons from the Plio–Pleistocene of the Ebro Continental Margin (Western Mediterranean)

Bertoni

Cartwright

2005

Basin Research

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This paper documents the importance of three‐dimensional (3D) seismic data for integrated stratigraphic–morphological analysis of slope systems. Furthermore, it contributes to the general understanding of the evolutionary mechanisms of slope‐confined submarine canyons on continental margins and their significance in a sequence stratigraphic framework. Recently acquired 3D seismic data from the Ebro Continental Margin (Western Mediterranean) have been used to study a series of remarkably well‐imaged submarine canyons in the Plio‐Pleistocene succession. Detailed mapping shows that these canyons are restricted to the slope, and thus can be compared with slope‐confined canyons observed on the present day seabed of many continental margins. The slope‐confined canyons are typically 0.5–2 km wide, 10–15 km long, and incise more than 50 m into the slope units. Their most striking characteristic is an upslope branching geometry in the head region involving up to three orders of bifurcation, with downslope development of a single incisional axis. The submarine canyons are characterized by a nested stacking pattern, undergoing alternating phases of cutting and filling. Limited parts of the upper and middle slope remain outside the canyon system, confined in sharp depositional ridges. The canyons are observed on closely spaced surfaces and exhibit a geometry that allowed the construction and discussion of a local sequence stratigraphic model for their evolution. In general, active incision of the canyons is observed at times throughout almost the entire cycle of base‐level change. However, erosional activity is more significant during the later stages of the relative sea level rise and the entire falling stage, with the timing of maximum erosion observed at the end of the cycle. The minimum erosional activity of the canyons is linked instead to the earliest part of the relative sea level rise.

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Deep-Water Sandstones, Brushy Canyon Formation, West Texas

Cited by 82 publications

References 0 publications

Processes and typology in Gilbert-type delta bottomset deposits based on outcrop examples in the Corinth Rift

Processes and typology in Gilbert-type delta bottomset deposits based on outcrop examples in the Corinth Rift

Evolution, architecture and hierarchy of distributary deep‐water deposits: a high‐resolution outcrop investigation from the Permian Karoo Basin, South Africa

3D seismic analysis of slope‐confined canyons from the Plio–Pleistocene of the Ebro Continental Margin (Western Mediterranean)

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