Origin of fragmental
Examples from the Web for fragmental
Historical Examples of fragmental
The absence of fragmental ejecta (broken rock that are thrown out) is extraordinary.The Wonder Book of Volcanoes and Earthquakes
Edwin J. Houston
Clastic, klas′tik, adj. breaking into fragments, fragmental.
Fragmental rocks are often quite indurated—the matrix being as hard as the included stones.
When a fragmental rock is composed chiefly of rocks belonging to the acidic group, we say it is felspathic.
These are overlaid by a series of alternating beds of crystalline (c) and fragmental (t) igneous rocks.