Fjords Flashcards
1
Q
Post Glacial Period
A
Last Glacial Maximum was 21000 yrs ago
Ice melted 6000 yrs ago - SL is now 125m higher
2
Q
Fjords
A
Submerged U-shaped valley
Over deepened inland by rivers + glaciers
Rock lip threshold at sea entrance (glacial till)
3
Q
Rias
A
Drowned V-shaped valley
Done by river erosion - outside LGM extent
4
Q
Sognefjorden, Norway
A
Largest fjord system in Norway - 200km inland
Aligned to fracture system in bedrock - exploited by rivers + glaciers
Main fjord Basin - 800m bsl (deepest is 1308 bsl)
Entrance at sea end is shallow - 100-150m
