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Alluvial fans have also been found on Mars and Titan, showing that fluvial processes have occurred on other worlds. Some of the largest alluvial fans are found along the Himalaya mountain front on the Indo-Gangetic plain. A shift of the feeder channel (a nodal avulsion) can lead to catastrophic flooding, as occurred on the Kosi River fan in 2008.
An alluvial fan could have been deposited and formed outside of a mountain range, however, thrusting of the mountain belt could cause the alluvial fan to become broken up by the new mountain forming. Thus, the alluvial fan would be split with the fan on either side of the new mountain range development and could change the steepness of the fan. [1]
Abyssal (or submarine) fans are formed from turbidity currents. These currents begin when a geologic activity pushes sediments over the edge of a continental shelf and down the continental slope, creating an underwater landslide. A dense slurry of muds and sands speeds towards the foot of the slope, until the current slows. The decreasing ...
Mojave has alluvial fans that look remarkably similar to landforms in the Mojave Desert in the American southwest. Fans inside and around the outsides of the crater are closely similar to Earth's alluvial fans. As on Earth, the largest rocks are near the mouths of the fans.
alluvial fan A fan-shaped deposit formed where a fast flowing stream flattens, slows, and spreads typically at the exit of a canyon onto a flatter plain. alluvium Soil or sediments deposited by a river or other running water. amber Fossilized resin or tree sap that is appreciated for its vivid colour, usually reddish-orange to gold or yellow ...
alluvial fan A distinctly triangular or fan-shaped deposit of sediment transported by water, often referred to as alluvium . Alluvial fans usually form at the base of mountains , where high-velocity rivers or streams meet a relatively flat area and lose the energy needed to carry large quantities of sediment, which ultimately spreads out in all ...
Ubehebe Crater in Springtime. Geologists call the resulting large steam explosions hydrovolcanic or phreatic eruption and the pits created are known as maars.Ubehebe was the last and largest in a series of similar eruptions in the immediate area (its eruption exceeded the tensile strength of the bedrock by 10 times).
Process-debris is transported by small streams or snow avalanches from valley walls and deposited at the break in valley wall slopes. [1] A debris cone consists of debris deposited in a conical shape with a surface slope greater than 10 degrees (perpendicular to contours), usually transported by small streams or snow avalanches. A debris cone ...