How Glaciation Causes Isostatic Movement (Leaving Cert Geography): Flashcards
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Eustatic movement
Eustatic movement
A change in sea level
Isostatic uplift
Isostatic uplift
The Earth's crust lifting up
Incised
Incised
To cut deeper
Rejuvenation
Rejuvenation
To make young again
River's base level
River's base level
Lowest level a river can erode its channel to
Peneplains
Peneplains
Areas of flat land
Isostasy
Isostasy
Balance of crust rising/sinking due to weight changes
Lithosphere
Lithosphere
Solid part of Earth's crust
Asthenosphere
Asthenosphere
Semi-molten upper mantle
Isostatic equilibrium
Isostatic equilibrium
Balance between lithosphere & asthenosphere
Isostatic readjustment
Isostatic readjustment
Crust forced down by weight (e.g. ice)
What happens when glacial ice melts?
What happens when glacial ice melts?
Crust floats back up (isostatic uplift)
How isostasy affects sea level
How isostasy affects sea level
Causes eustatic movement (sea level change)
Features affected by isostasy
Features affected by isostasy
Fluvial and coastal features