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Journal Article
Journal: Geology
Published: 24 June 2021
Geology (2021)
...Bernhard Salcher; Günther Prasicek; Sebastian Baumann; Florian Kober Glaciers exert a major control on the shape of mountain topography. They tend to reduce relief above and scour troughs below the equilibrium line altitude (ELA). While many studies report this dichotomy, relief-limiting effects...
Journal Article
Published: 14 May 2021
Journal of Sedimentary Research (2021) 91 (5): 495–506.
... on wind-scoured stoss-side exposures of seven crescentic dunes with heights ranging from 1.7 m to 11.2 m. Dozens of grainflow thickness measurements were taken along transverse-oriented strata normal to the crest on each dune. The results show that grainflow thickness averages from 1 cm to 4 cm...
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Journal Article
Published: 19 April 2021
Quarterly Journal of Engineering Geology and Hydrogeology (2021) qjegh2020-154.
... the hydraulic erodibility of rock. It should be noted that in this paper, we consider the terms ‘erodibility’, ‘scour’ and ‘hydraulic erosion’ as being synonymous technical terms that describe the significant localized erosion of rock when the rock is submitted to hydraulic erosive power. Van Schalkwyk et al...
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Journal Article
Published: 20 January 2021
Environmental and Engineering Geoscience (2021) 27 (2): 167–178.
... frequency, scour potential, and the vulnerability of the pipeline to break if impacted by boulders. The approach can be adapted to other landslide geohazards so that different geohazard locations can be evaluated with a common metric. Steep creek process frequency is estimated based on field observations...
Journal Article
Published: 10 December 2020
Quarterly Journal of Engineering Geology and Hydrogeology (2021) 54 (3): qjegh2019-145.
... by Berry (1979 , ‘Late Quaternary scour-hollows and related features in central London’, QJEG , 12 , 9–29, https://doi.org/10.1144/GSL.QJEG.1979.012.01.03 ), producing a resource for both engineering projects and academic research. Fifty-four additional drift-filled hollows have been identified...
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Journal Article
Journal: Geology
Published: 21 July 2020
Geology (2020) 48 (12): 1149–1153.
... they represent the subaqueous and shoreline clinoform pair), and (3) distinct facies described herein, though both types of delta have highly bioturbated mudstone and siltstone bottomsets. Tide-dominated deltas have muddy foresets with tidal scours containing tidal rhythmites or inclined heterolithic strata...
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Journal Article
Journal: Interpretation
Published: 11 May 2020
Interpretation (2020) 8 (3): SM39–SM52.
..., dominated the sediment transport and deposition at the shallow-water delta front, where the effluent flow mixes with lake water. The distributary channels show characteristics of repeatedly occurred erosion, scouring, filling, and reoccupation. We argue that the depositional characteristics are associated...
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Journal Article
Published: 01 December 2019
South African Journal of Geology (2019) 122 (4): 555–560.
... ) because this model suffers from little evidence of redeposition of removed material in and around the studied potholes ( Figure 1 ; see also Boudreau, 1992 ; Latypov et al., 2015 ). In addition, mechanical scouring by magma or crystal-rich mush may be expected to excavate meandering channels whereas...
FIGURES
Journal Article
Published: 19 November 2019
Petroleum Geoscience (2019) 25 (4): 519–531.
...God'spower I. Onyenanu; Gary J. Hampson; Peter J. R. Fitch; Matthew D. Jackson Abstract The reservoir properties of distal lower-shoreface and distal wave-dominated delta-front deposits, which consist of sandstone beds with locally scoured bases and mudstone interbeds, are poorly understood...
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Journal Article
Published: 21 October 2019
Journal of Sedimentary Research (2019) 89 (10): 919–934.
... in scouring the June Lake basin, including a prominent abraded bedrock shoal and an adjacent overdeepened depression. The seismic survey reveals four acoustically distinct stratigraphic units that reflect the history of sedimentation following glacial scouring. The youngest of these is represented...
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Journal Article
Published: 27 August 2019
Journal of Sedimentary Research (2019) 89 (8): 741–760.
... the dune field evolves. Mapping of outcrop-scale surfaces and sets of cross-strata between these surfaces for the Jurassic Page Sandstone near Page, Arizona, USA, demonstrates that the stratigraphic signature of autogenic behavior is captured by variable scour depths and subsequent fillings, whereas...
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Journal Article
Published: 17 July 2019
Scottish Journal of Geology (2019) 55 (2): 155–165.
... of large glaciers then occupying the adjacent valleys of Loch Broom and Little Loch Broom. The second much larger and more prominent deposit, in Applecross, is composed of bouldery Torridonian sandstone till emplaced on to glacially scoured bedrock; the only feasible source location for this material...
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Journal Article
Published: 12 March 2019
Journal of Sedimentary Research (2019) 89 (3): 199–206.
... southern Australia, to describe middle Eocene to Recent contourites deposited in an overall carbonate-dominated succession. These deposits comprise large (100 m wavelength by up to 50 m tall) bedforms and deep (10–90 m), wide (up to 3 km) erosional scours. The scours are particularly well developed at one...
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Journal Article
Published: 28 September 2018
Petroleum Geoscience (2019) 25 (2): 235–248.
... scours and the effective vertical-to-horizontal permeability ratio ( k v / k h ) of such intervals. The proportion of sandstone is controlled by sandstone-bed and mudstone-interbed thickness, and by parameters that describe the geometry, dimensions and lateral-stacking density of sandstone-filled scours...
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Journal Article
Journal: Geology
Published: 12 July 2018
Geology (2018) 46 (8): 707–710.
... (allogenic) drivers such as climate and tectonics. However, intrinsic (autogenic) river dynamics can also create a rich stratigraphic architecture in the absence of allogenic changes. Here, we outline scaling relationships for the expected depth and length scales of autogenic scour resulting from non-uniform...
FIGURES
Journal Article
Published: 14 February 2018
Environmental and Engineering Geoscience (2018) 24 (1): 121–136.
... seepage through the glacial outwash foundation as well as through a network of open joints within the left bedrock abutment. Seepage in the bedrock abutment could erode/scour the dam embankment at the bedrock contact, potentially leading to dam failure. To lower this potential risk of dam failure...
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Journal Article
Published: 17 October 2017
Journal of Sedimentary Research (2017) 87 (10): 1049–1059.
.... The cores also show several mud-rich (9–18%) poorly sorted sands, probably indicating deposition from more cohesive flows. The high-resolution bathymetry shows large sectors of the seafloor sculpted by elaborate bedforms and scours. The overbank area north of the channel exhibits the most numerous...
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Journal Article
Published: 01 August 2017
Environmental and Engineering Geoscience (2017) 23 (3): 221–241.
...William L. Niemann; Isaac W. Wait; Jeffrey R. Keaton Abstract Based on an assessment of rock scour at 15 bridges across West Virginia, a risk-based screening strategy is proposed that accounts for both mode of scour and stream power. The proposed strategy is a result of research conducted to 1...
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Journal Article
Published: 01 May 2017
Earthquake Spectra (2017) 33 (2): 709–728.
... place at depths between ∼4 m and ∼8 m in rather thin layers. This is a site where no evidence of liquefaction and lateral spreading was found and, if it occurred, the surface evidence was likely altered by tsunami waves, which also caused scour here. The site subsided and the V S -based...
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Journal Article
Published: 01 August 2016
Journal of Sedimentary Research (2016) 86 (8): 929–943.
... but wide scour structures showing evidence of lateral expansion by sand injection. The scours commonly occur at the base of beds made up of a basal clean sandstone overlain by argillaceous sandstone containing abundant mudstone clasts and locally large substrate rafts (up to 20 meters long). These strata...
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