Author Archives: Metageologist

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

Dinosaurs and the dangers of pedantism

Did you click here because of the word pedantism in the title? If so, you’ll like this (perhaps) apochryphal exchange between a married couple I know. Person A: ” You’re always correcting me! Your pedantism is really getting me down.” … Continue reading

Categories: etymology

Six amazing facts about what’s under your feet

Just 100s km away from you are right now there is a place where rocks can flow, where once-living matter is turned in jewels, from where deadly plumes once killed nearly all life on earth. We can never visit this place … Continue reading

Categories: Deep earth, diamonds, subduction

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