Deposition Landforms: Spits and Bars Flashcards
What is the first step in the formation of a spit?
The prevailing wind pushes the waves at an angle towards the shore.
What is the second step in the formation of a spit?
These waves pick up sediments and swash it up the beach at an angle.
What is the third step in the formation of a spit?
When the waves retreat down the beach at an angle it drags sediment as backwash.
What is the fourth step in the formation of a spit?
This process continues in zig zag movement called longshore drift - This moves sediment along the beach.
What is the fifth step in the formation of a spit?
Where a river enters the sea it slows down the waves and causes deposition of sediment to occur.
What is the sixth step in the formation of a spit?
The deposited sediment builds up to form a spit with a curved end because wind pushes the sediment inland.
What is the last step in the formation of a spilt?
Behind the spit a salt marsh can form.
What is a lagoon?
An area of water dammed by the bar.
What is an area of water dammed by the bar?
A lagoon.
How is a bar formed?
A spit grows across a bay and joins two headlands.
How will the lagoon eventually be infilled?
With deposition.
What happens to the lagoon as of deposition?
It will eventually be infilled.
