Deposition
No, they are examples of deposition, not erosion.
Both form weather dune is has sand delta water
deltas
The "sand dunes and deltas" are similar to that they are both "formed by weathering".
Sand dunes and deltas are different in their formation and environment. Sand dunes are primarily formed by the accumulation of sand through wind action in arid or coastal regions, creating mounds or ridges. In contrast, deltas are formed at the mouth of rivers where sediment is deposited as the river flows into a larger body of water, typically creating a fan-shaped landform. While both are shaped by sediment movement, their locations and the processes that create them are distinct.
Deltas and dunes are alike in a couple ways. One way is that they were both formed by the process of moving sand. Another way is that they can be both found near, under, or above water.
The formation of sand dunes and deltas involves different processes and environments. Sand dunes form primarily through the accumulation and wind-driven transportation of loose sand in arid or coastal regions, where the wind shapes the sand into mounds or ridges. In contrast, deltas form at river mouths where sediment carried by the river is deposited as the water slows down when entering a larger body of water, creating a fan-shaped landform. Thus, while both involve sediment deposition, sand dunes are shaped by wind, whereas deltas are shaped by water flow and sedimentation.
Erosion and Depositionerosion causes dunes and valleysdepostion causes deltas
Deltas are formed by the deposition of sediment carried by rivers, dunes are shaped by the wind through the accumulation of sand grains, and canyons are typically carved out by the erosive force of flowing water over time.
some examples are sand dunes,mudslides,or earthquakes.
Examples of geologic deposition include the accumulation of sediment in river deltas, the formation of carbonate rocks like limestone from the remains of marine organisms, and the deposition of volcanic ash from volcanic eruptions settling on land or in bodies of water.
Huge piles of sand are called sand dunes. Sand dunes typically form in deserts or coastal areas where there are strong winds that shape and move the sand into these large structures.