• Thumbnail for Bedform
    A bedform is a geological feature that develops at the interface of fluid and a moveable bed, the result of bed material being moved by fluid flow. Examples...
    11 KB (1,243 words) - 22:06, 12 July 2023
  • Thumbnail for Cross-bedding
    cross-strata. Cross-bedding forms during deposition on the inclined surfaces of bedforms such as ripples and dunes; it indicates that the depositional environment...
    15 KB (1,983 words) - 09:50, 9 October 2022
  • Hall, Minard; Ramón, Patricio; Dingwell, Donald B. (2013-10-13). "Dune bedforms produced by dilute pyroclastic density currents from the August 2006 eruption...
    5 KB (634 words) - 11:00, 19 August 2024
  • Thumbnail for Antidune
    An antidune is a bedform found in fluvial and other channeled environments. Antidunes occur in supercritical flow, meaning that the Froude number is greater...
    7 KB (909 words) - 11:51, 27 November 2022
  • Thumbnail for Sedimentary structures
    varying speeds and velocities produce different structures, are called bedforms. In the lower flow regime, the natural progression is from a flat bed,...
    13 KB (1,493 words) - 02:38, 4 December 2023
  • Thumbnail for Sedimentary rock
    characteristic of turbidity currents. The surface of a particular bed, called the bedform, can also be indicative of a particular sedimentary environment. Examples...
    63 KB (7,683 words) - 08:39, 25 June 2024
  • Thumbnail for Aeolian processes
    represented by sand-flow maps. These are based on meteorological observations, bedform orientations, and trends of yardangs. They are analogous to drainage maps...
    48 KB (6,008 words) - 20:37, 25 July 2024
  • Thumbnail for Ripple marks
    In geology, ripple marks are sedimentary structures (i.e., bedforms of the lower flow regime) and indicate agitation by water (current or waves) or directly...
    11 KB (1,030 words) - 23:30, 18 March 2024
  • Thumbnail for Martian regolith
    regolith components identified at landing sites. Typical examples include: bedform (a feature that develops at the interface of fluid and a moveable bed such...
    46 KB (4,646 words) - 14:44, 13 August 2024
  • Thumbnail for Dune
    next blows in the dominant direction. Draas are very large-scale dune bedforms; they may be tens or a few hundreds of metres in height, kilometres wide...
    71 KB (7,714 words) - 20:25, 2 August 2024
  • Cyclic steps are rhythmic bedforms associated with Froude super-critical flow instability. They are a type of sediment wave, and are created when supercritical...
    19 KB (2,057 words) - 15:17, 22 August 2024
  • Thumbnail for Fluvial sediment processes
    such as ripples, dunes, or antidunes on the river or stream bed. These bedforms are often preserved in sedimentary rocks and can be used to estimate the...
    11 KB (1,276 words) - 04:32, 26 May 2024
  • Thumbnail for Sandstone
    Lithification Siltation Turbidity currents By structure Sedimentary structures Bedforms cross-bedding duness graded bedding ripple marks Alluvial fan Alluvial...
    35 KB (3,935 words) - 15:39, 24 August 2024
  • Thumbnail for Coast
    with tidal currents. Wave action is much more important for determining bedforms of sediments deposited along mesotidal and microtidal coasts than in macrotidal...
    44 KB (7,189 words) - 17:32, 4 August 2024
  • Thumbnail for Oxbow lake
    slope Stream pool Thalweg Bedrock river Canyon Knickpoint Plunge pool Bedforms Ait Antidune Dune Current ripple Regional processes Aggradation Base level...
    16 KB (1,865 words) - 01:33, 13 July 2024
  • Thumbnail for Rhode Island Sound
    models to make topographical depictions of unknown glacial features and bedforms. Newfound glacial features include an ice-sculptured bedrock surface, residual...
    5 KB (636 words) - 21:40, 13 August 2023
  • Thumbnail for Floodplain
    slope Stream pool Thalweg Bedrock river Canyon Knickpoint Plunge pool Bedforms Ait Antidune Dune Current ripple Regional processes Aggradation Base level...
    32 KB (3,845 words) - 18:12, 8 August 2024
  • R. et al., in press, 'The Role of Bio-physical Cohesion on Subaqueous Bedform Size', Geophysical Research Letters, February, 2016. Malarkey, J., Baas...
    7 KB (749 words) - 02:44, 6 August 2024
  • Thumbnail for Sedimentation
    Lithification Siltation Turbidity currents By structure Sedimentary structures Bedforms cross-bedding duness graded bedding ripple marks Alluvial fan Alluvial...
    10 KB (1,713 words) - 15:11, 16 July 2024
  • Thumbnail for Sastrugi
    Kochanski, K.; Anderson, R.S.; Tucker, G. (2019). "The evolution of snow bedforms in the Colorado Front Range". The Cryosphere. 13: 1267–1281. doi:10.5194/tc-13-1267-2019...
    6 KB (646 words) - 17:25, 17 March 2023
  • Thumbnail for Sediment
    Lithification Siltation Turbidity currents By structure Sedimentary structures Bedforms cross-bedding duness graded bedding ripple marks Alluvial fan Alluvial...
    22 KB (2,812 words) - 01:47, 17 March 2024
  • Thumbnail for Braided river
    23 April 2011. Blodgett, R.H.; Stanley, K.O. (1980). "Stratification, Bedforms, and Discharge Relations of the Platte Braided River System, Nebraska"...
    17 KB (1,956 words) - 16:31, 17 June 2024
  • Thumbnail for Sediment transport
    and viscosity, and can therefore not exert very much shear on its bed. Bedforms are generated by aeolian sediment transport in the terrestrial near-surface...
    56 KB (8,282 words) - 08:15, 25 June 2024
  • Thumbnail for Shallow water marine environment
    grain size, with the smallest grains at the top Ripples: the smallest bedform type Dunes: larger and similar in shape to ripples Carbonaceous sedimentary...
    11 KB (1,229 words) - 15:41, 11 August 2024
  • Thumbnail for Niveo-aeolian deposition
    the surface of a niveo-aeolian deposit typically consists of a rippled bedform of mixed sand and snow. Beneath the surface, the deposits commonly consist...
    6 KB (731 words) - 23:17, 1 January 2022
  • Thumbnail for Climate of Mars
    descend from the polar high to transport ice and create large wavelength bedforms. The spiral shape comes from Coriolis effect forcing of the winds, much...
    114 KB (11,735 words) - 04:14, 29 July 2024
  • Thumbnail for Torres Strait
    Broadcasting Corporation. Retrieved 9 May 2015. Harris, P. T. (1988). "Sediments, bedforms and bedload transport pathways on the continental shelf adjacent to Torres...
    24 KB (2,850 words) - 23:55, 10 July 2024
  • Thumbnail for Avulsion (river)
    slope Stream pool Thalweg Bedrock river Canyon Knickpoint Plunge pool Bedforms Ait Antidune Dune Current ripple Regional processes Aggradation Base level...
    10 KB (1,336 words) - 10:00, 23 June 2024
  • Thumbnail for Drumlin
    ISBN 978-0-902246-04-1. Shaw, John (April 2002). "The meltwater hypothesis for subglacial bedforms". Quaternary International. 90 (1): 5–22. Bibcode:2002QuInt..90....5S....
    28 KB (3,202 words) - 15:38, 17 March 2024
  • Thumbnail for Iron-rich sedimentary rocks
    the form of discontinuous layers. Discontinuous layers likely represent bedforms that were generated by storm waves and currents. Any layers that are thicker...
    16 KB (2,062 words) - 00:10, 14 January 2024