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In the cooling mantle half-space model developed in 1974, [4] the seabed (top of crust) height is determined by the oceanic lithosphere and mantle temperature, due to thermal expansion. The simple result is that the ridge height or seabed depth is proportional to the square root of its age. [4]
The fireplace mantel or mantelpiece, also known as a chimneypiece, originated in medieval times as a hood that projected over a fire grate to catch the smoke. The term has evolved to include the decorative framework around the fireplace , and can include elaborate designs extending to the ceiling.
When hanging shelves on a wall, home designers generally try to ensure that the shelf should be no wider than 1.4 x bracket's width and no wider than 1.2 x bracket's height. [ citation needed ] Spacing brackets for a long shelf should be no more than 4 x shelf-breadth between each bracket - this holds true for normal materials used at home.
The age of the oceanic crust can be used to estimate the (thermal) thickness of the lithosphere, where young oceanic crust has not had enough time to cool the mantle beneath it, while older oceanic crust has thicker mantle lithosphere beneath it. [19] The oceanic lithosphere subducts at what are known as convergent boundaries. These boundaries ...
It is a dome-shaped region approximately 10 miles (16 km) across and rising about 14,000 feet (4,267 m) from the sea floor. It is located at approximately 30°8′N latitude 42°8′W longitude; just east of the intersection of the Mid-Atlantic Ridge with the Atlantis Transform Fault. The highest point of the massif is around 700 metres (2,297 ...
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