geology cies islands
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Geology of Cies Islands
By Francisco, Mateo and Pedro
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Formation
• Cies islands were formed because the movements of tectonic plates, (formingmountains) and with the de-glaciation, thosemountains were sunk. Atlantic islands and the “rias” were formed like this.
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Lagoa dos nenos
• What is a lagoon?
A lagoon is an area of shallow water separated from the sea by sandy dunes or coral reefs.
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Rodas beach
• What is a beach?
An area of sand along a shore.
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Caves
• What is a cave?
A cave is a hollow place in the earth.
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Cliffs
• What is a cliff?
A high, steep rock face precipice
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Tombolo
• What is a tombolo?
A tombolo is a sedimentary landform, which is a narrow spit of land between an island or a large rock away from the coast.
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Dunes
• What is a dune?
A sand hill ridge formed by the wind, usually in deserts or near oceans
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Bay
• Input sea coast, wide and fairly large, but smaller than the Gulf
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Examples of erosion, transportationand sedimentation in cies.
Transportation(waves, wind…)
Erosion
Sedimentation
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Physical wethering in cies
• Takes place when rocks get fragmentated byphysical processes, and it doesn´t changes itscomposition
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Chemical wethering in Cies
• Takes place when the rock is chemicallydisolved or altered
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Biologic wethering in Cies
• Takes plave when a biologic agent brakes oralters the rock
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The End
Thank you!