Category Archives: eclogites

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

Exciting extraterrestrial eclogites

Eclogites are beautiful rocks that on Earth are associated with the process of subduction – where pieces of crust sink into the deep mantle region. A recent paper by Makoto Kimura and 5 other Japanese authors, describes the first ever evidence … Continue reading

Categories: eclogites, geochemistry, subduction

A deeper look at the geology of diamonds

The geology of diamonds is fascinating in itself, but they also give insights into wider geological processes and history. Up until 1725, diamonds were only known from India. That all changed when Brazilians panning river sediments for gold, instead found diamonds. Recent … Continue reading

Categories: diamonds, eclogites, geochemistry, subduction