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A "drowned" coastline - also called a "submergent" coastline - is an "old" continental edge that has been eroded, and is consequently flatter, with a shallower topography.
It becomes "drowned" as sea levels rise, or as the land subsides - creating features such as large estuaries (Chesapeake Bay, for example) as old river valleys are submerged.
The reason the East Coast is mostly submergent is because the continent is moving West - toward the Pacific and San Juan de Fuca oceanic plates. As the continent collides with these oceanic plates, it creates a new "emergent" coast along the west coast of the US and Canada - with steep mountains and volcanoes. In contrast, the East coast continues to erode over time, as there is no mountain building occurring (no collision with other tectonic plates).
What else can I help you with?
What region has the longest coastline?
Asia is the continent with the longest coastline.
Which country had a longer coastline Jamaica or cuba?
Cuba is much larger than Jamaica and will therefore have a longer coastline. Cuba has a coastline of 3735 km and Jamaica has a coastline of 1022 km.
When was The Coastline created?
The Coastline was created in 1983.
Is there any surf on the Arizona coastline?
No, Arizona is a landlocked state and does not have a coastline. You would need to travel to a state with a coastline, such as California or Hawaii, to find surfing opportunities.
What things are there to do on the coastline in dorset?
you can visit the coastline and much more
When was Drowned Out created?
Drowned Out was created in 2002.
How can you revive a drowned fly?
If the fly already drowned, then it will always be dead. If we had the ability to revive a drowned fly, we would be able to revive a drowned human (but we can't yet).
Who is ben drown?
Ben Drowned is a boy who was drowned by his father ( there is more to the story I recommend listening to it)
What will you do if your friend got drowned?
your friend drowned and i would save him/her
When was Drowned in Sound created?
Drowned in Sound was created in 2000.
When was Drowned Ammet created?
Drowned Ammet was created in 1977.
When was The Drowned World created?
The Drowned World was created in 1962.
When was Drowned in Wine created?
Drowned in Wine was created in 1970.
When was The Feast of the Drowned created?
The Feast of the Drowned was created in 2006.
Is it she drown or she drowned?
She drowned, as in When Sierra tried to swim, she drowned. No offence to anyone named Sierra, but there's one that I REALLY hate.
How many syllables are in the word drowned?
The word drowned has one syllable.
When was Drowned Wednesday created?
Drowned Wednesday was created in 2005-02.
