No title but please read question?

Question

When I was younger (not so long ago) I read that there was a ridge in the atlantic. Apparently this ridge was hundreds of metres in depth??
Does anyone what I am talking about? And more importantly does anybody know the name of this?
Any answers appreciated.

Answer 1

The Mid-Atlantic Ridge. Good old Wikipedia

Answer 2

The Mid-Atlantic Ridge is a mostly underwater mountain range of the Atlantic Ocean and Arctic Ocean that runs from 87°N (about 333 km South of the North Pole) to subantarctic Bouvet Island at 54°S. The highest peaks of this mountain range extend above the water mark, to form islands. The Mid-Atlantic Ridge forms part of the global mid-oceanic ridge system and, like all mid-oceanic ridges, is thought to result from a divergent boundary that separates tectonic plates: the North American Plate from the Eurasian Plate in the North Atlantic, and the South American Plate from the African Plate in the South Atlantic. These plates are still moving apart, so the Atlantic is growing at the ridge, at a rate of about 5-10 centimeters per year in East-West direction.

Answer 3

Dis ridge is called the mid-atlantic ridge.
It stretches across the whole atlantic ocean;
beside the whole length of north n south america.
Its depth is about 3000 metres.

Answer 4

BOUNDARIES AND SIZE:

The Atlantic Ocean is essentially an S-shaped north-south channel, extending from the Arctic Ocean in the north to Antarctica in the south and situated between the eastern coast of North and South America and the western coasts of Europe and Africa.

The Atlantic Ocean proper has a surface area of about 82 million sq km (about 31,660,000 sq mi). Including its marginal seas—the Gulf of Mexico-Caribbean Sea, the Arctic Ocean, and the North, Baltic, Mediterranean, and Black seas—the total area is about 106,190,000 sq km (41 million sq mi).

The boundary between the North Atlantic and the Arctic Ocean is arbitrarily designated as lying along a system of submarine ridges that extend between the land masses of Baffin Island, Greenland, and Scotland. More clearly defined is the boundary with the Mediterranean Sea at the Strait of Gibraltar and with the Caribbean Sea along the arc of the Antilles.

The South Atlantic is arbitrarily separated from the Indian Ocean on the east by the 20° east meridian and from the Pacific on the west along the line of shallowest depth between Cape Horn and the Antarctic Peninsula.



GEOLOGICAL FORMATION AND STRUCTURAL FEATURES:

The Atlantic began to form during the Jurassic period, about 150 million years ago, when a rift opened up in the supercontinent of Gondwanaland, resulting in the separation of South America and Africa. The separation continues today at the rate of several centimetres a year along the Mid-Atlantic Ridge.

Part of the midoceanic ridge system that girdles the world, it is a submarine ridge extending north to south in a sinuous path midway between the continents. Roughly 1,500 km (930 mi) wide, the ridge has a more rugged topography than any mountain range on land, and is a frequent site of volcanic eruptions and earthquakes. The ridge ranges from about 1 to 3 km (0.6 to 2 mi) above the ocean bottom.

Along the American, Antarctic, African, and European coasts are the continental shelves—embankments of the debris washed from the continents. Submarine ridges and rises extend roughly east-west between the continental shelves and the Mid-Atlantic Ridge, dividing the eastern and western ocean floors into a series of basins, also known as abyssal plains.

The three basins on the American side of the Mid-Atlantic Ridge are more than 5,000 m (16,400 ft) deep: the North American Basin, the Brazil Basin, and the Argentina Basin. The Eurafrican side is marked by several basins that are smaller but just as deep: the Iberia, Canaries, Cape Verde, Sierra Leone, Guinea, Angola, Cape, and Agulhas basins. The large Atlantic-Antarctic Basin lies between the southernmost extension of the Mid-Atlantic Ridge and Antarctica.

The Atlantic Ocean has an average depth of 3,926 m (12,881 ft). At its deepest point, in the Puerto Rico Trench, the bottom is 8,742 m (28,681 ft) below the surface.

Answer 5

I dont think it has a name just the Atlantic ridge its roughly 11300km long and 4000 metres high

Answer 6

The mid-atlantic ridge? I believe that's the area in the atlantic where the plates are separating, forming new land. On other parts of the world you will find subduction zones, where the land is folding under itself and plates are coming together. Neat, huh?

Answer 7

The Mid-Atlantic Ridge is a mostly underwater mountain range of the Atlantic Ocean and Arctic Ocean that runs from 87°N (about 333 km South of the North Pole) to subantarctic Bouvet Island at 54°S. The highest peaks of this mountain range extend above the water mark, to form islands. The Mid-Atlantic Ridge forms part of the global mid-oceanic ridge system and, like all mid-oceanic ridges, is thought to result from a divergent boundary that separates tectonic plates: the North American Plate from the Eurasian Plate in the North Atlantic, and the South American Plate from the African Plate in the South Atlantic. These plates are still moving apart, so the Atlantic is growing at the ridge, at a rate of about 5-10 centimeters per year in East-West direction.

The ridge was discovered by Bruce Heezen and Marie Tharp in the 1950s. The discovery of this ridge led to the theory of seafloor spreading and general acceptance of Wegener's theory of continental drift.

Contents [hide]
1 Relation to other ridges and trenches
2 Islands on the Mid-Atlantic Ridge, from North to South
3 Geology
4 See also
5 References



[edit]
Relation to other ridges and trenches
At the South end near Bouvet Island, the Mid-Atlantic Ridge turns into the Atlantic-Indian-Ridge and continues further East through the Crozet Plateau to the Southwest Indian Ridge, while in the West it is followed by the Scotia Ridge.

Near the equator, the Mid-Atlantic Ridge is dissected into the North Atlantic Ridge and the South Atlantic Ridge by the Romanche Trench, a narrow submarine trench with a maximum depth of 7758 m, one of the deepest locations of the Atlantic Ocean.

[edit]
Islands on the Mid-Atlantic Ridge, from North to South
The islands are, from North to South , with their respective highest peaks, elevations in m, and location:

Northern Hemisphere (North Atlantic Ridge):

Jan Mayen (Beerenberg, 2277 m, at 71°06'N, 08°12'W), in the Arctic Ocean
Iceland (Hvannadalshnúkur in the Vatnajökull, 2109.6 m, at 64°01'N, 16°41'W)
Azores (Ponta do Pico or Pico Alto, on Pico Island, 2351 m, at 38°28′0″N, 28°24′0″W)
Bermuda (Town Hill, on Main Island, 76 m, at 32°18′N, 64°47′W) (Bermuda was formed on the ridge, but is now considerably west of it)
Saint Peter and Paul Rocks (Southwest Rock, 22.5 m, at 00°55′08″N, 29°20′35″W)
Southern Hemisphere (South Atlantic Ridge):

Ascension Island (The Peak, Green Mountain, 859 m, at 07°59'S, 14°25'W)
Tristan da Cunha (Queen Mary's Peak, 2062 m, at 37°05'S, 12°17'W)
Gough Island (Edinburgh Peak, 909 m, at 40°20'S, 10°00'W)
Bouvet Island (Olavtoppen, 780 m, at 54°24'S, 03°21'E)
[edit]
Geology
For a general explanation of mid-oceanic ridges, see mid-oceanic ridge and seafloor spreading
These mountain ranges are where tectonic plates move apart along a divergent boundary as magma rises from the Earth's mantle. Heat from the magma causes the crust on either side of the rifts to expand, forming the ridges.

The ridge actually sits on top of the mid-Atlantic rise which is a progressive bulge that also runs the length of the Atlantic Ocean with the ridge resting on the highest point of this linear bulge. This bulge is thought to be caused by upward convective forces in the asthenosphere pushing the oceanic crust and lithosphere.

This divergent boundary first formed in the Triassic period when a series of three-armed grabens coalesced on the supercontinent Pangaea to form the Ridge. Usually only two arms of any given three-armed graben become part of a divergent plate boundary. The failed arms are called aulacogens and the aulacogens of the Mid-Atlantic Ridge eventually became many of the large river valleys seen along the Americas, and Africa (including the Mississippi River, Amazon River and Niger River).

[edit]
See also
Atlantis Massif

Answer 8

Puerto Rico Trench

Answer 9

i think that ur talking about the mid-atlantic ridge
im pretty sure that that is where u plates are spliting, which would explain the depth...

Answer 10

GREAT ATLANTIC RIDGE...... ABOUT 500 MILES NSW OF AMERICA