Coesite in clinopyroxene in the Caledonides and its implications for geodynamics
Abstract
Coesite is reported for the first time from the Caledonide orogen. It occurs as inclusion in clinopyroxene in the dolomite-eclogite at Grytting, Norway, and provides valuable new evidence supporting the hypothesis of extremely high pressure in certain Norwegian eclogites. This finding has implications for the geodynamics and kinetics of the concepts of microscale intracrystalline tectonic overpressure and of macroscale local or regional tectonic overpressures, and for hypotheses of subduction and obduction involving a more than 100 km vertical component of transport.
- Publication:
-
Nature
- Pub Date:
- August 1984
- DOI:
- 10.1038/310641a0
- Bibcode:
- 1984Natur.310..641S
- Keywords:
-
- Coesite;
- Eclogite;
- Geodynamics;
- Mineralogy;
- Pyroxenes;
- Tectonics;
- Crystal Structure;
- Dolomite (Mineral);
- Earth Crust;
- Mountains;
- Norway;
- Overpressure;
- Phase Transformations;
- Subduction (Geology);
- Geophysics