a decrease in the speed of the agent of erosion occurs
A decrease in water velocity usually causes more sediments to be deposited at a location in a stream. This can happen when the stream widens, the channel gradient decreases, or obstacles such as rocks or vegetation slow down the flow of water.
Sediments in outwash are typically well-sorted and composed of sand and gravel, deposited by meltwater streams flowing from glaciers. In contrast, sediments in moraines are unsorted and contain a mix of various sizes of rocks, debris, and till that has been directly deposited by the glacier. Outwash sediments are usually sorted by size and shape, while moraine sediments are unsorted and show a wider range of material types.
Many sediments end up in the ocean, where they are deposited on the seafloor. Others may accumulate in lakes, rivers, or on land. Over time, these sediments can become compressed and cemented together to form sedimentary rocks.
Sediments like sand and gravel are typically deposited first in a stream channel due to their heavier weight and larger size compared to finer particles like silt and clay. These sediments settle out when the stream's velocity decreases, usually in areas with reduced flow or obstacles that disrupt the current.
Alluvial soil is developed from silt and clay deposited by a flooding river. It is usually rich in nutrients and very fertile, making it suitable for agriculture.
A decrease in water velocity usually causes more sediments to be deposited at a location in a stream. This can happen when the stream widens, the channel gradient decreases, or obstacles such as rocks or vegetation slow down the flow of water.
Common minerals that end up as sediments include quartz, feldspar, clay minerals, calcite, and gypsum. These minerals are usually weathered from rocks and transported by water or wind to be deposited as sediments in various environments such as river deltas, beaches, or ocean floors.
Sediments in outwash are typically well-sorted and composed of sand and gravel, deposited by meltwater streams flowing from glaciers. In contrast, sediments in moraines are unsorted and contain a mix of various sizes of rocks, debris, and till that has been directly deposited by the glacier. Outwash sediments are usually sorted by size and shape, while moraine sediments are unsorted and show a wider range of material types.
Decrease in stream velocity
Many sediments end up in the ocean, where they are deposited on the seafloor. Others may accumulate in lakes, rivers, or on land. Over time, these sediments can become compressed and cemented together to form sedimentary rocks.
Sediments like sand and gravel are typically deposited first in a stream channel due to their heavier weight and larger size compared to finer particles like silt and clay. These sediments settle out when the stream's velocity decreases, usually in areas with reduced flow or obstacles that disrupt the current.
Alluvial soil is developed from silt and clay deposited by a flooding river. It is usually rich in nutrients and very fertile, making it suitable for agriculture.
Terrigenous sediment consists of particles eroded from the Earth's crust, such as sand, silt, and clay. These particles are transported by wind, water, or ice and eventually deposited on the seafloor. Terrigenous sediments are a major component of deep-sea sediment and can provide valuable information about Earth's past climate and tectonic activity.
Decrease in stream velocity
A stream's sediment load is typically deposited, eroded, and redeposited many times in a stream channel, especially during climatic variations such as flooding. Sediments are deposited throughout the length of the stream as bars or floodplain deposits. At the mouth of the stream, the sediments are usually deposited in alluvial fans or deltas, which represent a lower-energy, more "permanent" depositional environment that is less susceptible to changes in the stream flow. i got this from clift notes
Shoals are formed by the deposition of sediments and materials transported by water currents, usually in shallow areas of water bodies such as rivers, lakes, or oceans. Continuous movement of water carries sediments and deposits them in specific areas, creating shoals. Over time, the accumulation of sediments solidifies and shapes the shoal.
Sediments are usually found in layers because they are deposited gradually over time, with newer sediments settling on top of older ones. Different sediment types can produce distinct layers based on factors such as grain size, mineral composition, or changing environmental conditions. This layering process helps to provide a historical record of the Earth's geologic and environmental changes.