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Data sets Publications Expeditions Thesaurus
shirasu  search
RTamorphous materials
 ignimbrite
 Kyushu
 pumice
 pyroclastic flows
 pyroclastics
 volcanic ash
 volcanic glass
 volcanic rocks
SNVolcanic materials. Added to Thesaurus in 1993.
Shirasu River  search
BTnshu
 .Shirasu River
SNStream NW of Tokyo in central Honshu. Before 1993, also search Shirasu. Added to Thesaurus in 1993.