Keywords

Pyroclastic (rock)



Keyword Definition

Fragmental igneous rock that consists of greater than 75 percent fragments produced as a direct result of eruption or extrusion of magma from within the earth onto its surface. Includes autobreccia associated with lava flows and excludes deposits reworked by epiclastic processes.

based on LeMaitre et al. 2002

Parents: Fragmental igneous rock (112); Pyroclastic material (206)

Children: Ash tuff, lapillistone, and lapilli tuff (22); Tuff-breccia, agglomerate, or pyroclastic breccia (260)

[Description taken from GeoSciML SimpleLithology201012.rdf]



Hierarchical classification

Sample >> Lithosphere >> Rock >> Whole >> Rock >> Igneous >> Fragmental >> Pyroclastic

Children

Ash tuff, lapillistone, and lapilli tuff | Tuff-breccia, agglomerate, or pyroclastic breccia


Category: Analysed material

The different kinds of sample material collected in the field have been classified hierarchically. Examples: “till”, “soil”, “vegetation”. Taken from the “Sample_Types_SHARED” database table.


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