http://inspire.ec.europa.eu/codelist/LithologyValue/tephraINSPIRE Registry teamJRC-INSPIRE-SUPPORT@ec.europa.euhttp://inspire.ec.europa.eu/registry2015-08-18 18:05 PM CEST2015-08-18 18:05 PM CESTtephraUnconsolidated pyroclastic material in which greater than 75 percent of the fragments are deposited as a direct result of volcanic processes and the deposit has not been reworked by epiclastic processes. Includes ash, lapilli tephra, bomb tephra, block tephra and unconsolidated agglomerate.http://inspire.ec.europa.eu/codelist/LithologyValue/ashAndLapilli2015-08-18 18:01 PM CEST2015-08-18 18:01 PM CESTash and lapilliTephra in which less than 25 percent of fragments are greater than 64 mm in longest dimensionhttp://inspire.ec.europa.eu/codelist/LithologyValue/ashBrecciaBombOrBlockTephra2015-08-18 18:01 PM CEST2015-08-18 18:01 PM CESTash breccia, bomb, or block tephraTephra in which more than 25 percent of particles are greater than 64 mm in largest dimension. Includes ash breccia, bomb tephra and block tephra of Gillespie and Styles (1999)