Search results
Results from the WOW.Com Content Network
In a classic map of the world (with north at the top), the southern ends of the continental landmasses appear to "drip" downward. Continental drip is the observation that southward-pointing landforms are more numerous and prominent than northward-pointing landforms.
Modern scholarship has determined that in early AD 536 (or possibly late 535), an eruption ejected massive amounts of sulfate aerosols into the atmosphere, which reduced the solar radiation reaching the Earth's surface and cooled the atmosphere for several years. In March 536, Constantinople began experiencing darkened skies and lower temperatures.
Erosional submarine canyons slope downward and lead to alluvial fan valleys with increasing depth. [2] It is in this zone that sediment is deposited, forming the continental rise. Alluvial fans such as the Bengal Fan, which stretches 3,000 kilometers (1,900 miles), make up one of the largest sedimentary structures in the world. [1]
Subsided house, called The Crooked House, the result of 19th-century mining subsidence in Staffordshire, England Mam Tor road destroyed by subsidence and shear, near Castleton, Derbyshire Subsidence is a general term for downward vertical movement of the Earth's surface, which can be caused by both natural processes and human activities.
He proposed that the continents had once formed a single landmass, called Pangaea, before breaking apart and drifting to their present locations. [ 32 ] Wegener was the first to use the phrase "continental drift" (1912, 1915) [ 5 ] [ 18 ] ( German : "die Verschiebung der Kontinente" ) and to publish the hypothesis that the continents had ...
Also called Indianite. A mineral from the lime-rich end of the plagioclase group of minerals. Anorthites are usually silicates of calcium and aluminium occurring in some basic igneous rocks, typically those produced by the contact metamorphism of impure calcareous sediments. anticline An arched fold in which the layers usually dip away from the fold axis. Contrast syncline. aphanic Having the ...
The border between the continental slope and the abyssal plain usually has a more gradual descent, and is called the continental rise, which is caused by sediment cascading down the continental slope. [citation needed] The mid-ocean ridge, as its name implies, is a mountainous rise through the middle of all the oceans, between the continents.
Panhole: a shallow depression or basin eroded into flat or gently sloping, cohesive rock. [2] Collapse-related: Sinkhole: a depression formed as a result of the collapse of rocks lying above a hollow. This is common in karst regions. Kettle: a shallow, sediment-filled body of water formed by melting glacial remnants in terminal moraines. [3]