Journal article
The realm of ultrahigh-pressure metamorphism
Elements (Quebec), Vol.9(4), pp.255-260
08/2013
DOI: 10.2113/gselements.9.4.255
Abstract
The discovery of diamond and coesite in crustal rocks is compelling evidence that continental material has experienced pressures that can only be achieved at mantle depths. At least 20 terranes of unequivocal continental crust containing diamond or coesite are now recognized around the globe; their study constitutes a new field in petrology called ultrahigh-pressure metamorphism. The idea that continents do not subduct has given way to the notion that Earth has been sufficiently cool since the Cryogenian (approximately 850 Ma) to allow density changes to drive continental crust into the mantle during collision. Some of this crust is exhumed to the surface, some pools at the Moho, and the rest sinks into the mantle. In this issue, microscopic observations, phase-equilibrium modeling, geochronology, and geodynamic modeling track the journey of crustal rocks to the mantle and back to Earth's surface.
Details
- Title: Subtitle
- The realm of ultrahigh-pressure metamorphism
- Creators
- Jane A Gilotti - University of Iowa
- Contributors
- Jane A Gilotti (Editor) - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Elements (Quebec), Vol.9(4), pp.255-260
- Publisher
- Mineralogical Society of America and Mineralogical Society of Great Britain and Ireland and Mineralogical Association of Canada and Geochemical Society and Clay Minerals Society
- DOI
- 10.2113/gselements.9.4.255
- ISSN
- 1811-5209
- eISSN
- 1811-5217
- Alternative title
- Continental crust at mantle depths
- Language
- English
- Date published
- 08/2013
- Academic Unit
- Earth and Environmental Sciences
- Record Identifier
- 9984229172902771
Metrics
6 Record Views