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Weathering, erosion, and deposition are examples of gradual geological processes, taking place over large sections of the geologic time scale. In the rock cycle , rocks are continually broken down, transported, and deposited, cycling through three main rock types: sedimentary , metamorphic , and igneous .
Very intense chemical weathering, leaching, and erosion in warm and humid regions where soil does not freeze; Climate directly affects the rate of weathering and leaching. Wind moves sand and smaller particles (dust), especially in arid regions where there is little plant cover, depositing it close to [55] or far from the entrainment source. [56]
Honeycomb weathering – Form of cavernous weathering and subcategory of tafoni; Impact crater – Circular depression in a solid astronomical body formed by the impact of a smaller object; Joint valley – Landscape originates from the erosion of joints in the bedrock, leaving out small plateaus or ridges in between. Common in Fennoscandia.
Weathering: the chemical or physical forces breaking apart the solid materials that are potentially transported. Erosion: The movement of material due to weathering forces that have freed materials for movement. Deposition: The material settles on a horizontal plane either through chemical or physical precipitation.
These sedimentary structures are remnants of burrows and tunnels excavated by marine organisms that live on the ocean floor. [1] These organisms churn and burrow through mud and sand a process called bioturbation. [1] They ingest the sediment, digest the organic matter, and leave behind the remnants which fills the burrow. [1] Tidal bundle
In geology, a bed is a layer of sediment, sedimentary rock, or volcanic rock "bounded above and below by more or less well-defined bedding surfaces". [1] A bedding surface or bedding plane is respectively a curved surface or plane that visibly separates each successive bed (of the same or different lithology ) from the preceding or following bed.
Sediment is a solid material that is transported to a new location where it is deposited. [1] It occurs naturally and, through the processes of weathering and erosion, is broken down and subsequently transported by the action of wind, water, or ice or by the force of gravity acting on the particles.
Thermal stress weathering is an important mechanism in deserts, where there is a large diurnal temperature range, hot in the day and cold at night. [14] As a result, thermal stress weathering is sometimes called insolation weathering, but this is misleading. Thermal stress weathering can be caused by any large change of temperature, and not ...