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Rootless Cone/Vent

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  • First Online:
Encyclopedia of Planetary Landforms

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Definition

Rootless vents are volcanic exit points of fragmented particles (pyroclasts) derived from an explosion that is not directly connected to vertical conduit and magma source (Bruno et al. 2004; Keszthelyi and Self 1998; Lanagan et al. 2001; Self et al. 1996; Sheth et al. 2004). The fragmented pyroclastic deposits accumulating around the rootless vent is the rootless cone.

Synonyms

Pseudocrater; Secondary vent

Description

Rootless cones and vents are referring only to the fact that the volcanic landform associated with them has not been fed directly by vertical magmatic feeder networks. The type of lateral feeding and style of magma fragmentation therefore determine the texture of deposits, size, and general volcanic architecture of the rootless cone.

Morphometry

Rootless cones are generally smaller than cinder cones. They are most commonly in the same size range as lava spatter cones.

Subtypes on Earth

  1. (1)

    Hornito: lava flow surface morphology features that are formed when...

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Authors and Affiliations

  1. Institute of Agriculture and Environment, Volcanic Risk Solutions, Massey University, Palmerston North, New Zealand

    Károly Németh

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  1. Károly Németh
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Correspondence to Károly Németh .

Editor information

Editors and Affiliations

  1. NASA Ames Research Center/NPP, Moffett Field, CA, USA

    Henrik Hargitai

  2. Konkoly Thege Miklos Astronomical Institute, Research Centre for Astronomy and Earth Sciences, Budapest, Hungary

    Ákos Kereszturi

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Németh, K. (2015). Rootless Cone/Vent. In: Hargitai, H., Kereszturi, Á. (eds) Encyclopedia of Planetary Landforms. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-3134-3_529

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