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Transform Faults
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∙ 13y ago
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Along the axis of some segments of the oceanic ridge system are deep down structured called?
Rift Valleys
Where are the youngest rocks on the ocean floor typically found?
fault line
What major island mass lies on the axis of the mid-atlantic ridge?
Iceland
Why does the elevation gradually decrease away from the ridge axis?
Hot material ascends at the ridge axis form the mantle. It partially melts. The basaltic melts ascend and form 6-7 km of oceanic crust. The seafloor and the underlying mantle then move away from the ridge axis. The material cools from top down. As it does it contracts thermally and becomes more dense. The vertical contraction of the material and the increased load on the underlying mantle causes the seafloor to subside. The weight of the overlying water also causes subsidence. To the first order, the predicted depth to the seafloor increases with the square root of age from the ridge axis. This in fact occurs and was strong evidence for the reality of seafloor spreading in the late 1960s. Note that Lord Kelvin was on the trans-Atlantic cable project. He crossed the Charlie-Gibbs fracture zone rather than the ridge axis. The square-root relationship was not evident. Wegener also considered the process to some extent, but ended up with continents moving as rafts rather than with seafloor spreading. See paper for technical derivation and some early references. 2011 Sleep, N. H., Small-scale convection beneath oceans and continents. Chi. Sci. Bull., 56(13), 1292-1317, DOI: 10.1007/s11434-011-4435-x.
Where Germany on the allies or axis power during world war 2?
Germany was the ,if you want to call it, ruler of the axis powers.In fact,its his fault the war started in the first place!
What type of fault created the Rio Grande Rift Valley?
A rift valley is a graben. A German word. A graben geological structure in cross section looks like a V with a wide bottom, more like a U with sloped sides. The earth is pulled apart creating normal faults on either side and the center part sinks. The opposite structure, where the center rises is called a horst. Look up graben on wikipedia.
The huge trough down the center of the mid-ocean ridge is where?
The huge trough running down the center of the mid-ocean ridge is a Rift Valley. A Rift Valley is a deep linear valley extending along the axis of the ridge.
How cyclone moves around?
When a tropical cyclone crosses the subtropical ridge axis, its general track around the high-pressure area is deflected significantly by winds moving ...
What observation has been about the age of the basalt that forms a mid ocean ridge?
New magma of basalt composition emerges at and near the axis because of decompression melting in the underlying Earth's mantle.
What observation has been made about the age of the basalt that forms a mid ocean ridge?
New magma of basalt composition emerges at and near the axis because of decompression melting in the underlying Earth's mantle.
What are the places who lies in the Mid-Atlantic ridge?
The Mid-Atlantic Ridge is an underwater ridge lying along the north-south axis of the Atlantic Ocean. It is an immensely long mountain chain (ten thousand miles) that extends in a curving chain from the Arctic Ocean to the Southern Tip of Africa. It is equidistant from the continents on either side and the mountains forming the ridge reach a width of 1,000 miles. These mountains occasionally appear above sea level as islands eg Azores, Ascention, St. Helena and Tristan da Cunha.
Can you find me a picture or an example of axis?
Yes I can. If you ignore the rest there is a good picture of the earth's axis on this site. http://mysteryoftheinquity.wordpress.com/2011/03/14/us-west-coast-fault-zone-warned-near-%E2%80%9Ctotal-failure%E2%80%9D/
