Lava spine

A lava spine at the summit of Mount Pelée in 1902

A lava spine is a vertically growing monolith of viscous lava that is slowly forced from a volcanic vent, such as those growing on a lava dome (Bates & Jackson, 1987). It may also be considered a kind of dome called a spiny dome (Fink & Anderson, 2000). In February 1983, the dome activity of Mount St. Helens culminated in a spine that reached a height of about 100 ft before collapsing after two weeks, but another lava spine called the Whaleback never collapsed. A diatreme may also be referred to as a lava spine, such as the example of Mount Pelee in 1902. [1] [2] [3]

See also


  1. Bates, Robert L. (1987). Jackson, Julia A., ed. Glossary of Geology (3rd ed.).
  2. Sigurdsson, H; B. F. Houghton (2000). Encyclopedia of Volcanoes. San Diego: Academic Press. pp. 310–311.
  3. "History- Mt. St. Helens". Retrieved October 2, 2011.
Wikimedia Commons has media related to Lava spines.
This article is issued from Wikipedia - version of the 6/17/2014. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.