Subglacial bedrock welding associated with glacial earthquakes

M Bestmann, Alexander Hugh Neville Rice, F Langenhorst, Bernhard Grasemann, F Heidelbach

Publications: Contribution to journalArticlePeer Reviewed

Abstract

A 1130 °C) to cause partial frictional welding of the deformed quartzitic bedrock beneath an ice-loaded clast. These results support suggestions that glacial seismicity is due to episodic very rapid shifts of large ice masses over the substrate (stick-slip movement). They also indicate that significant effective normal stresses occur at the base of glaciers.
Original languageEnglish
Pages (from-to)417-420
Number of pages4
JournalJournal of the Geological Society
Volume163
Issue number3
Publication statusPublished - 2006

Austrian Fields of Science 2012

  • 1051 Geology, Mineralogy

Cite this