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The trench effect became known because of the scientific investigation of the King's Cross fire, which occurred on the London Underground in 1987. The fire started on an escalator (containing wood and years of built-up grease) between the Piccadilly line platforms and the ticket hall at King's Cross St Pancras tube station. Many eyewitnesses ...
The oceanic Philippine Sea plate subducts beneath the Eurasian plate at the Ryukyu Trench. The oceanic Pacific plate subducts under the oceanic Philippine Sea plate forming the Mariana Trench. The oceanic Philippine Sea plate is subducting under the Philippine Mobile Belt forming the Philippine Trench and the East Luzon Trench.
[11] [12] Marianas Trench is an example of a deep slab, thereby creating the deepest trench in the world established by a steep slab angle. [13] Slab breakoff occurs during a collision between oceanic and continental lithosphere, [14] allowing for a slab tear; an example of slab breakoff occurs within the Himalayan subduction zone. [4]
The risk of cave-in increases from surcharge load, which is any weight placed outside the trench near its edge. These loads include the spoil pile (soil excavated from the trench) or heavy equipment. These add extra stress to the walls of the trench. Inability to escape the trench because of steep and unstable walls, which may be difficult to ...
Pages in category "Unsolved problems in geometry" The following 48 pages are in this category, out of 48 total. This list may not reflect recent changes. A.
At the triple junction each of the three boundaries will be one of three types – a ridge (R), trench (T) or transform fault (F) – and triple junctions can be described according to the types of plate margin that meet at them (e.g. fault–fault–trench, ridge–ridge–ridge, or abbreviated F-F-T, R-R-R).
This is a list of algebraic geometry topics, by Wikipedia page. Classical topics in projective geometry. Affine space; Projective space; Projective line, cross-ratio;
One good example is the Mariana forearc, where scientists have done extensive research. In this setting there is an erosive margin and forearc slope which consists of 2 km high and 30 km diameter serpentine- mud volcanoes. The erosive properties of these volcanoes are consistent with the metamorphic grades (blueschists) expected for this region ...