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  2. Landslide classification - Wikipedia

    en.wikipedia.org/wiki/Landslide_classification

    The difference between these two concepts is subtle but important. The landslide causes are the reasons that a landslide occurred in that location and at that time and may be considered to be factors that made the slope vulnerable to failure, that predispose the slope to becoming unstable. The trigger is the single event that finally initiated ...

  3. Mass wasting - Wikipedia

    en.wikipedia.org/wiki/Mass_wasting

    A landslide, also called a landslip, [10] is a relatively rapid movement of a large mass of earth and rocks down a hill or a mountainside. Landslides can be further classified by the importance of water in the mass wasting process. In a narrow sense, landslides are rapid movement of large amounts of relatively dry debris down moderate to steep ...

  4. Landslide - Wikipedia

    en.wikipedia.org/wiki/Landslide

    A landslide in which the sliding surface is located within the soil mantle or weathered bedrock (typically to a depth from few decimeters to some meters) is called a shallow landslide. Debris slides and debris flows are usually shallow. Shallow landslides can often happen in areas that have slopes with high permeable soils on top of low ...

  5. Downhill creep - Wikipedia

    en.wikipedia.org/wiki/Downhill_creep

    Downhill creep, also known as soil creep or commonly just creep, is a type of creep characterized by the slow, downward progression of rock and soil down a low grade slope; it can also refer to slow deformation of such materials as a result of prolonged pressure and stress.

  6. Colluvium - Wikipedia

    en.wikipedia.org/wiki/Colluvium

    Colluvium (also colluvial material or colluvial soil) is a general name for loose, unconsolidated sediments that have been deposited at the base of hillslopes by either rainwash, sheetwash, slow continuous downslope creep, or a variable combination of these processes.

  7. Earthflow - Wikipedia

    en.wikipedia.org/wiki/Earthflow

    It is an intermediate type of mass wasting that is between downhill creep and mudflow. The types of materials that are susceptible to earthflows are clay, fine sand and silt, and fine-grained pyroclastic material. [1] When the ground materials become saturated with enough water, they will start flowing (soil liquefaction). Its speed can range ...

  8. List of landslides - Wikipedia

    en.wikipedia.org/wiki/List_of_landslides

    The deadliest and one of the largest landslides in Canadian history. [66] [67] 15 Jan 1905 Lovatnet, Norway: 0.35 MCM 61 Slid 500 metres (1,640 ft) down the slope of the mountain Ramnefjellet into the lake Lovatnet, generating a megatsunami with a height of up to 40.5 metres (133 ft). [68] 13 Apr 1907 Chryszczata, Bieszczady Mountains, Poland ...

  9. Geology of Virginia - Wikipedia

    en.wikipedia.org/wiki/Geology_of_Virginia

    The geology of Virginia began to form at least 1.8 billion years ago. The oldest rocks in the state were metamorphosed during the Grenville orogeny , a mountain-building event beginning 1.2 billion years ago in the Proterozoic , which obscured older rocks.

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