Category Archives: tectonics

A new paradigm for Barrovian metamorphism?

The phrase ‘new paradigm’ is a little shop-worn but it still catches the eye. To see it used in a “discussion and reply” on a dry-looking metamorphic petrology paper is really something unusual. Tracing through these articles really shows how … Continue reading

Categories: eclogites, metamorphism, mountains, Scotland, tectonics

Metamorphic petrology: under pressure and getting stressed?

High pressure (HP) terranes are areas containing eclogites and other eclogite-facies rocks found within many mountains belts, including the Himalaya and the Alps. HP rocks were¬†metamorphosed at extreme pressures, up to 3 or even 4 billion Pascals (or GPa. Atmospheric … Continue reading

Categories: eclogites, metamorphism, mountains, subduction, tectonics

A world without subduction

The greatest achievement of the generation of Earth Scientists now retiring is the concept of plate tectonics. The insight that the earth’s surface is made up of rigid plates that move has shed light on all aspects of Earth Science, … Continue reading

Categories: eclogites, impacts, metamorphism, subduction, tectonics

The Himalaya: mountains made from mountains

Good building stones get reused. Sometimes the only traces of very old buildings are their stones, built into more modern ones. It’s the same with rocks and mountain belts. Stone that now forms parts of the Himalaya was once part … Continue reading

Categories: geochemistry, Himalaya, metamorphism, mountains, open access, tectonics