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Convergent active margins are the most common type of active margin. Transform active margins are more rare, and occur when an oceanic plate and a continental plate are moving parallel to each other in opposite directions. These transform margins are often characterized by many offshore faults, which causes high degree of relief offshore ...
Most of these conventions are supported by active groups of map makers, and have been created and improved through long and serious discussions. The main intentions are: to display efficiently selected data; to create screen, web, print, creation & share friendly maps; to create a wiki style free of nationalism issues.
If the template has a separate documentation page (usually called "Template:template name/doc"), add [[Category:Map templates]] to the <includeonly> section at the bottom of that page. Otherwise, add <noinclude>[[Category:Map templates]]</noinclude> to the end of the template code, making sure it starts on the same line as the code's last ...
Active margins characterized by a significant proportion of fine-grained sediment within the incoming section, such as northern Antilles and eastern Nankai, exhibit thin taper angles, whereas those characterized by a higher proportion of sandy turbidites, such as Cascadia, Chile, and Mexico, have steep taper angles. Observations from active ...
The driver for seafloor spreading in plates with active margins is the weight of the cool, dense, subducting slabs that pull them along, or slab pull. The magmatism at the ridge is considered to be passive upwelling, which is caused by the plates being pulled apart under the weight of their own slabs.
Passive continental margins such as most of the Atlantic coasts have wide and shallow shelves, made of thick sedimentary wedges derived from long erosion of a neighboring continent. Active continental margins have narrow, relatively steep shelves, due to frequent earthquakes that move sediment to the deep sea.
The following 15 pages use this file: Central America Volcanic Arc; Continental arc; EarthScope; Earth materials; Geology; Geology of the Rocky Mountains
Townscape scale maps to show 'on-the-ground' features (zoom 15/16) Caerleon Roman Fortress and Baths; Isca Augusta (Roman Fortress at Caerleon) Burrium (Roman fortress at Usk) Nidum (Roman auxilliary fortress at Neath) Leucarum (Roman auxilliary fortress at Loughor) Banwen (Roman and other sites)