Welding slag

from Wikipedia, the free encyclopedia

Welding slag ( cinder or scoria ) is an older, terminologically incorrect term for a special form of pyroclastic deposition . It consists of thrown out, in contrast to the thrown slag, glowing liquid lava fragments that stick together on the crater rim , that is, are "welded together" and thus contribute to its structure and growth. The term 'slag' is just as misleading as volcanic ash , as neither has anything to do with residual products of combustion.

In the more recent terminology of pyroclasts or pyroclastic deposits, welding slag is one of the agglomerates , since it consists of more than 75% volcanic bombs .

literature

  • Roger Walter Le Maitre: Igneous rocks: IUGS classification and glossary; recommendations of the International Union of Geological Sciences, Subcommission on the Systematics of Igneous Rocks. 2nd ed., 236 pp., New York, Cambridge University Press 2002, ISBN 0-521-66215-X
  • Hans Murawski & Wilhelm Meyer: Geological dictionary. 10., rework. u. exp. Ed., 278 p., Enke Verlag, Stuttgart 1998 ISBN 3-432-84100-0 .