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.
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.
Subtypes on Earth
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