Simple Lithology

pyroclastic material

http://resource.geosciml.org/classifier/cgi/lithology/pyroclastic_material

definition Fragmental igneous material that consists of more than 75 percent of particles formed by disruption as a direct result of volcanic action. more like this
narrower pyroclastic rock
broader pyroclastic material
tephra
broader pyroclastic material
source LeMaitre et al. 2002 more like this
type
Resource
Concept
broader fragmental igneous material
narrower pyroclastic material
in scheme simplelithology
is primary topic of pyroclastic material