Ejecta (from the
Latin: "things thrown", singular
ejectum) refers to
particles ejected from an area. In
volcanology, in particular, the term refers to particles that came out of a
volcanic vent, traveled through the air or under water, and fell back on the ground surface or on the ocean floor. Ejecta can consist of:
- Juvenile particles - (fragmented magma and free crystals)
- Cognate or accessory particles - older volcanic rocks from the same volcano
- Accidental particles - derived from the rocks under the volcano
