• Thumbnail for Cross-bedding
    In geology, cross-bedding, also known as cross-stratification, is layering within a stratum and at an angle to the main bedding plane. The sedimentary...
    15 KB (1,983 words) - 09:50, 9 October 2022
  • Thumbnail for Bedding
    Bedding, also called bedclothes or bed linen, is the materials laid above the mattress of a bed for hygiene, warmth, protection of the mattress, and decorative...
    17 KB (1,443 words) - 00:49, 11 August 2024
  • Thumbnail for Sedimentary structures
    meters or multiple meters thick. Sedimentary structures such as cross-bedding, graded bedding, and ripple marks are utilized in stratigraphic studies to indicate...
    13 KB (1,493 words) - 02:38, 4 December 2023
  • Thumbnail for Sedimentary rock
    structure called cross-bedding. Cross-bedding is characteristic of deposition by a flowing medium (wind or water). The opposite of cross-bedding is parallel...
    63 KB (7,683 words) - 08:39, 25 June 2024
  • Thumbnail for Conglomerate (geology)
    types of sedimentary structures, e.g., tabular and trough cross-bedding and graded bedding. Fanglomerates are poorly sorted, matrix-rich conglomerates...
    16 KB (1,817 words) - 23:38, 19 July 2024
  • Thumbnail for Hummocky cross-stratification
    Hummocky cross-stratification is a type of sedimentary structure found in sandstones. It is a form of cross-bedding usually formed by the action of large...
    5 KB (644 words) - 20:46, 28 February 2023
  • Thumbnail for Sandstone
    Sand grains of quartz with hematite coating providing an orange colour Cross-bedding and scour in sandstone of the Logan Formation (Lower Carboniferous)...
    35 KB (3,935 words) - 15:39, 24 August 2024
  • Thumbnail for Coquina
    compose them. As a result, they typically exhibit well-developed bedding or cross-bedding, close packing, and good orientation of the shell fragments. The...
    24 KB (2,840 words) - 17:19, 2 August 2024
  • Thumbnail for Ripple marks
    Flow Regime. Ripple cross-laminae forms when deposition takes place during migration of current or wave ripples. A series of cross-laminae are produced...
    11 KB (1,030 words) - 23:30, 18 March 2024
  • Thumbnail for The Wave (Arizona)
    funneled into and through these troughs. The Wave exposes large-scale sets of cross-bedded eolian sandstone composed of rhythmic and cyclic alternating grainflow...
    18 KB (2,041 words) - 22:57, 5 January 2024
  • Thumbnail for Aeolian processes
    are preserved in the geologic record as sandstone with large sets of cross-bedding and many reactivation surfaces. Draas are very large composite transverse...
    48 KB (6,008 words) - 20:37, 25 July 2024
  • surface; cross-bedding, etc. Unconformities - Clear angular unconformities provide unequivocal evidence of the relative age of two rock sequences. Cross-bedding...
    8 KB (1,045 words) - 12:03, 30 July 2024
  • Thumbnail for Mount Vesuvius
    have buried Pompeii. Surges are identified in the deposits by dune and cross-bedding formations, which are not produced by fallout. Another study used the...
    68 KB (7,620 words) - 14:42, 15 August 2024
  • Thumbnail for Sedimentation
    Turbidity currents By structure Sedimentary structures Bedforms cross-bedding duness graded bedding ripple marks Alluvial fan Alluvial river Fault Fold Paleocurrent...
    10 KB (1,713 words) - 15:11, 16 July 2024
  • Thumbnail for Eruption of Mount Vesuvius in 79 AD
    and buried Pompeii. Surges are identified in the deposits by dune and cross-bedding formations, which are not produced by fallout. The eruption is considered...
    48 KB (5,563 words) - 20:35, 24 August 2024
  • Thumbnail for Dune
    perpendicular to the wind, which moves them forwards, producing the cross-bedding shown here. Seif dunes are common in the Sahara. They range up to 300 m...
    71 KB (7,714 words) - 20:25, 2 August 2024
  • barrier dune. The sedimentary structures include parallel bedding and low-angle cross-bedding.  This article incorporates public domain material from Dictionary...
    788 bytes (118 words) - 01:38, 28 June 2021
  • Thumbnail for The Bahamas
    sea level, causing wind blown oolite to form sand dunes with distinct cross-bedding. Overlapping dunes form oolitic ridges, which become rapidly lithified...
    141 KB (12,380 words) - 14:06, 20 August 2024
  • resulting bedding is not horizontal, but dips in the direction of current flow toward deeper water. A cross-section of a delta shows the cross bedding in the...
    1 KB (165 words) - 00:45, 24 July 2023
  • Thumbnail for Palo Duro Canyon
    environment consisting of siltstones and shales with ripple marks and cross bedding, that alternated with dry tidal flats indicated by satin spar gypsum...
    24 KB (2,618 words) - 23:14, 23 August 2024
  • Thumbnail for Zion National Park
    environmental technology, including windcatchers for passive cooling and cross ventilation, which bring the center's temperature down during hot summer...
    59 KB (5,436 words) - 06:07, 21 August 2024
  • Thumbnail for Uluru
    rusty colour. Features related to deposition of the sediment include cross-bedding and ripples, analysis of which indicated deposition from broad shallow...
    53 KB (5,464 words) - 03:34, 14 August 2024
  • Thumbnail for Esker
    pebble/cobble-sized material with occasional boulders. Bedding may be irregular but is almost always present, and cross-bedding is common. There are various cases where...
    13 KB (1,452 words) - 21:36, 26 September 2023
  • Thumbnail for Yorkstone
    friendly builds. Yorkstone often shows features such as laminations with cross bedding, and rusty Liesegang bands. Bargate stone Brownstone List of stone Old...
    5 KB (462 words) - 14:30, 29 September 2023
  • heterolithic bedding are flaser, wavy, and lenticular. Starved ripples and cross bedding with flasers can also be considered forms of heterolithic bedding. Differentiating...
    4 KB (528 words) - 15:11, 4 June 2024
  • Thumbnail for Geology of the Zion and Kolob canyons area
    slow-moving streams, ponds and large lakes. Evidence for this is in cross-bedding of the sediments and large numbers of fish fossils. The upper member...
    36 KB (4,494 words) - 15:46, 26 May 2024
  • Thumbnail for The Pinnacles (Western Australia)
    only a metre or so in height and width resembling short tombstones. A cross-bedding structure can be observed in many pinnacles where the angle of deposited...
    9 KB (1,025 words) - 05:17, 1 May 2024
  • Thumbnail for Brimham Rocks
    and quartz pebbles. Deposition from moving water has resulted in the cross-bedding which is very evident in most of the outcrops. Brimham Rocks has been...
    80 KB (8,911 words) - 08:24, 1 August 2024
  • Thumbnail for Geology
    environments supports this generalization (although cross-bedding is inclined, the overall orientation of cross-bedded units is horizontal). The principle of...
    87 KB (9,655 words) - 06:54, 21 August 2024
  • Thumbnail for Bed (geology)
    Where bedding surfaces occur as cross-sections, e.g., in a 2-dimensional vertical cliff face of horizontal strata, are often referred to as bedding contacts...
    14 KB (1,573 words) - 01:43, 17 February 2024