Polygenetic volcanic field

Polygenetic volcanic field

A polygenetic volcanic field is a volcanic field of scattered volcanic vents. These volcanic fields, containing numerous polygenetic volcanoes, are noted for having more than one eruptive event from the same vent(s), rather than the more common monogenetic volcanic field. Polygenetic volcanic fields generally occur where there is a high-level magma chamber. These volcanic fields may show lithological discontinuities due to major changes in magma chemistry, volcanotectonic events, or long erosional intervals, and may last >10 million year period.

Unlike monogenetic volcanic fields, volcanoes in polygenetic fields reach massive sizes, such as Mauna Loa, which is the world's largest active volcano.

Some types of volcanoes include shield volcanoes, stratovolcanoes, complex volcanoes, somma volcanoes and calderas.


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • Volcanic field — A volcanic field is a spot of the earth s crust that is prone to localized volcanic activity. They usually contain 10 to 100 volcanoes, such as cinder cones and are usually in clusters. Lava flows may also occur. They may occur as a monogenetic… …   Wikipedia

  • Monogenetic volcanic field — A monogenetic volcanic field is a volcanic field of small, scattered volcanic vents. These volcanic fields, containing numerous monogenetic volcanoes, are noted for having only one short eruptive event at each volcano, as opposed to regular… …   Wikipedia

  • Mormon volcanic field — Mormon Mountain Volcanic Field Elevation 1,500 to 2,530 m (4,920 to 8,300 ft) [1] Location …   Wikipedia

  • Mount Edziza volcanic complex — Mount Edziza, one of the main volcanoes of the Mount Edziza volcanic complex Elevation …   Wikipedia

  • List of mountain types — Mountains can be characterized in several ways. Some mountains are volcanoes and can be characterized by the type of lava and eruptive history. Other mountains are shaped by glacial processes and can be characterized by their shape. Finally, many …   Wikipedia

  • Portal:Volcanoes — Wikipedia portals: Culture Geography Health History Mathematics Natural sciences People Philosophy Religion Society Technology …   Wikipedia

  • Mount Cayley — The Mount Cayley volcanic complex in August 13, 2005. Summits left to right are Pyroclastic Peak and Mount Cayley. Elevation 2,377 m (7,799 ft) …   Wikipedia

  • Craters of the Moon National Monument and Preserve — For other uses, see Craters of the Moon (disambiguation). Craters of the Moon National Monument and Preserve IUCN Category III (Natural Monument) …   Wikipedia

  • Mount Garibaldi — as seen from Squamish Elevation 2,678 m (8,786 ft)  …   Wikipedia

  • Mount Fee — as seen from the northeast Elevation …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”