tephra

English - English

Definition of tephra in English English dictionary

The solid material thrown into the air by a volcanic eruption that settles on the surrounding areas

Any rock material produced by a volcano (Source: Carbon Dioxide Information Analysis Center, 1990)

loose material, e g , ash and pumice, deposited by volcanic eruptions; mantles extensive areas of the central North Island Terrace: flat to gently sloping alluvial surface, elevated above floodplain level

fragments thrown into the air by a volcanic eruption

Particles of volcanic rock that are launched from a volcanic vent These can range in size from dust-sized particles to pieces that are many feet across

Rock fragments ejected by a volcanic eruption

A collective term for all clastic volcanic materials that are ejected from a vent during an eruption and transported through the air, including ash (volcanic), blocks (volcanic), cinders, lapilli, scoria, and pumice Tephra is a general term which, unlike many volcaniclastic terms, does not denote properties of composition, visicularity, or grain size

(Geology) Volcanic material; ash-fall

a general term covering all fragmental material expelled from a volcano (ash, bombs, cinders, etc )

Pyroclastic materials that fly from an erupting volcano through the air before cooling, and range in size from fine dust to massive blocks

The general term used by volcanologists for fragments of volcanic rock and lava of any size expelled from a volcano

Fragmented rock material ejected by a volcanic explosion Also called pyroclastic material

Hyphenation

teph·ra

Etymology

[ 'te-fr& ] (noun.) 1944. New Latin, from Greek, ashes; akin to Sanskrit dahati it burns; more at FOMENT.