Ash and lapilli
Tephra in which less than 25 percent of fragments are greater than 64 mm in longest dimension
Schmid 1981; LeMaitre et al. 2002
Parents: Tephra (249)
[Description taken from GeoSciML SimpleLithology201012.rdf]
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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