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t. e. Plate tectonics (from Latin tectonicus, from Ancient Greek τεκτονικός (tektonikós) 'pertaining to building') [1] is the scientific theory that Earth 's lithosphere comprises a number of large tectonic plates, which have been slowly moving since 3–4 billion years ago. [2][3][4] The model builds on the concept of continental ...
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Attribution and Share-Alike required; Any use of this map...
- List of Tectonic Plates
Plate tectonics map from NASA. This is a list of tectonic...
- Mountain-Building
Thrust and reverse fault movement are an important component...
- Adiabatic
An adiabatic process (adiabatic from Ancient Greek ἀδιάβατος...
- Lithosphere
The tectonic plates of the lithosphere on Earth Earth...
- Divergent
This is an accepted version of this page This is the latest...
- Isostasy
Isostasy (Greek ísos 'equal', stásis 'standstill') or...
- Seafloor Spreading
Seafloor spreading helps explain continental drift in the...
- Earth
Earth is rounded into an ellipsoid with a circumference of...
- File
Earth is rounded into an ellipsoid with a circumference of about 40,000 km. It is the densest planet in the Solar System. Of the four rocky planets, it is the largest and most massive. Earth is about eight light-minutes away from the Sun and orbits it, taking a year (about 365.25 days) to complete one revolution.
Oct 19, 2023 · noun. layer in Earth's mantle between the lithosphere (above) and the upper mantle (below). continent. noun. one of the seven main land masses on Earth. dense. adjective. having parts or molecules that are packed closely together. ductile.
- Types
- Occurrences
- Deposits and Landforms
- Causes
- Hazards and Mitigation
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Mass wasting is a general term for any process of erosion that is driven by gravity and in which the transported soil and rock is not entrained in a moving medium, such as water, wind, or ice. The presence of water usually aids mass wasting, but the water is not abundant enough to be regarded as a transporting medium. Thus, the distinction between ...
On Earth, mass wasting occurs on both terrestrial and submarine slopes.Submarine mass wasting is particularly common along glaciated coastlines where glaciers are retreating and great quantities of sediments are being released. Submarine slides can transport huge volumes of sediments for hundreds of kilometers in a few hours. Mass wasting is a comm...
Mass wasting affects geomorphology, most often in subtle, small-scale ways, but occasionally more spectacularly. Soil creep is rarely apparent but can produce such subtle effects as curved forest growth and tilted fences and telephone poles. It occasionally produces low scarps and shallow depressions. Solifluction produced lobed or sheetlike deposi...
Triggers for mass wasting can be divided into passive and activating (initiating) causes. Passive causes include: 1. Rock and soil lithology. Unconsolidated or weak debris are more susceptible to mass wasting, as are materials that lose cohesion when wetted. 2. Stratigraphy, such as thinly bedded rock or alternating beds of weak and strong or imper...
Mass wasting causes problems for civil engineering, particularly highway construction. It can displace roads, buildings, and other construction and can break pipelines. Historically, mitigation of landslide hazards on the Gaillard Cut of the Panama Canalaccounted for 55,860,400 cubic meters (73,062,600 cu yd) of the 128,648,530 cubic meters (168,26...
Monroe, Wicander (2005). The Changing Earth: Exploring Geology and Evolution. Thomson Brooks/Cole. ISBN 0-495-01020-0.Selby, M.J. (1993). Hillslope Materials and Processes, 2e. Oxford University Press. ISBN 0-19-874183-9.Fundamentals Of Physical Geography (Class 11th NCERT). ISBN 81-7450-518-0Mass movement is the downhill movement of cliff material under the influence of gravity. There are a range of different types of mass movement. These are explored below. Types of mass movement.
Karl W. Birkeland. Mass movement, bulk movements of soil and rock debris down slopes in response to the pull of gravity, or the rapid or gradual sinking of the Earth’s ground surface in a predominantly vertical direction. Formerly, the term mass wasting referred to a variety of processes by which large masses of.
Apr 27, 2024 · 12.2: Mass Movement. Mass movement is the down slope movement of earth materials under the influence of gravity. The detachment and movement of earth materials occurs if the stress imposed is greater than the strength of the material to hold it in place. The slope of the surface determines the amount of stress that occurs on earth materials.
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