Alluvial fan - Wikipedia
网页An alluvial fan is an accumulation of sediments that fans outwards from a concentrated source of sediments, such as a narrow canyon emerging from an escarpment. They are characteristic of mountainous terrain in arid to semiarid climates, but are also found in more humid environments subject to intense rainfall and in areas of modern glaciation.
Alluvial Fan - National Geographic Society
网页2023年10月19日 · An alluvial fan is a triangle-shaped deposit of gravel, sand, and even smaller pieces of sediment, such as silt. This sediment is called alluvium. Alluvial fans are usually created as flowing water interacts with mountains, hills, or …
Alluvial fan | Process, Characteristics & Types | Britannica
网页alluvial fan, unconsolidated sedimentary deposit that accumulates at the mouth of a mountain canyon because of a diminution or cessation of sediment transport by the issuing stream.
Alluvial Fan - All You Need to Know BEFORE You Go (2024) - Tripadvisor
网页The Alluvial Fan was formed when an earthen dam broke up in the mountains, and the water came rushing down the hill. Rocks, trees, and even big boulders were carried by the water and strewn everywhere in its path. The Alluvial Fan is located on Fall River Road, close to where it turns into the unpaved Old Fall River Road.
Alluvial fans - Geosciences LibreTexts
网页2020年8月23日 · Alluvial fans form in areas with a steep gradient from a drainage catchment to the basin floor. Tectonic activity is typically required to maintain steep slopes because they erode to lower slopes through time.
Alluvial Fan - U.S. National Park Service
网页2021年9月14日 · Located off the road to Endovalley, the Alluvial Fan is a beautiful cascade of water flowing down through a boulder field. Reconstructed in 2020, the trail to the Alluvial Fan was designed to be fully accessible.
10.1: Alluvial and Fluvial Systems - Geosciences LibreTexts
网页2024年3月20日 · Alluvial fans are mounds of coarse grained sediments formed when a confined stream disgorges into an unconfined area. They typically occur along the margins of mountain ranges where bedrock incised channels draining uplands spill out on to broad open valley floors.
Alluvial Fans: Geomorphology, Sedimentology, Dynamics
网页2005年1月1日 · Alluvial fans are important sedimentary environments. They trap sediment delivered from mountain source areas, and exert an important control on the delivery of sediment to downstream environments, to axial drainages and …
8.1: Alluvial Fans - Geosciences LibreTexts
网页Alluvial fans - Alluvial fans are cone shaped accumulations of coarse sediment deposited at the transition from confined flow in a canyon to unconfined flow in a basin. This also corresponds to a break in slope.
Alluvial Fan Processes and Forms - SpringerLink
网页This chapter attempts to (a) provide an up-to-date synthesis of the literature on alluvial fans in desert settings, and (b) introduce a framework for their understanding based on concepts that have emerged during the last 120 years of scientific research.