Isostasy (Leaving Cert Geography): Flashcards

A change in sea level

The Earth's crust lifting up

To cut deeper

To make young again

Lowest level a river can erode its channel to

Areas of flat land

Balance of crust rising/sinking due to weight changes

Solid part of Earth's crust

Semi-molten upper mantle

Balance between lithosphere & asthenosphere

Crust forced down by weight (e.g. ice)

Crust floats back up (isostatic uplift)

Causes eustatic movement (sea level change)

Fluvial and coastal features