Table of Contents
Is a deposit of sediments formed where a stream leaves a mountain range?
Ch 8 Erosion and Deposition Vocabulary
| A | B |
|---|---|
| Alluvial fan | A wide, sloping deposit of sediment formed where a stream leaves a mountain range. |
| Delta | A landform made of sediment that is deposited where a river flows into an ocean or lake. |
| Groundwater | Water that fills the cracks and pores in underground soil and rock layers. |
What is stream deposited sediment called?
When a river enters standing water, its velocity slows to a stop. The stream moves back and forth across the region and drops its sediments in a wide triangular-shaped deposit called a delta.
What is it called when a river deposits sediment?
When rivers flood, sediment gets deposited on the floodplain. This sediment is called overbank deposits.
What is the sediments deposited directly by a glacier?
Glacial till (also known as glacial drift) is the unsorted sediment of a glacial deposit; till is the part of glacial drift deposited directly by the glacier. Its content may small silt-sized particles to sand, gravel, as well as boulders.
Where earth materials are deposited when a river enters an ocean?
As a river meets the sea, the sediment it carries is deposited in a fan-like formation called a delta. As longshore drift picks up and transports the sediment, it can be carried and deposited down current to form shoreline sediment features such as sand bars, spits, and barrier islands.
Where does a stream deposit sediment?
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.
What is a sediment deposit?
mineral deposits formed during the accumulation of sediment on the bottom of rivers and other bodies of water. According to their place of formation they are divided into river, swamp, lake, sea, and ocean deposits.