Continental rifts as a setting for regional metamorphism

Continental rifts as a setting for regional metamorphism

During very high-temperature/low-pressure Hercynian metamorphism in the Pyrenees the crust began to melt at ∼12 km and stable isotopes show that it was flushed by circulating seawater to that depth. There is no evidence for crustal collision and the tectonic setting for this, and maybe all high-temp...

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Veröffentlicht in:Nature (London) 1985-11, Vol.318 (6044), p.330-333
Hauptverfasser: Wickham, Stephen M, Oxburgh, E. Ronald
Format: Artikel
Sprache:eng
Schlagworte:
Crystalline rocks
Earth sciences
Earth, ocean, space
Exact sciences and technology
Humanities and Social Sciences
Igneous and metamorphic rocks petrology, volcanic processes, magmas
multidisciplinary
Science
Science (multidisciplinary)
Tectonics. Structural geology. Plate tectonics
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Zusammenfassung:During very high-temperature/low-pressure Hercynian metamorphism in the Pyrenees the crust began to melt at ∼12 km and stable isotopes show that it was flushed by circulating seawater to that depth. There is no evidence for crustal collision and the tectonic setting for this, and maybe all high-temperature/low-pressure metamorphism, is a zone of continental rifting.
ISSN:0028-0836
1476-4687
DOI:10.1038/318330a0