Metamorphism: Pressure-Temperature-time paths

Schematic P-T-t paths for Barrovian metamorphism

Pressure-Temperature-time paths This post is in the middle of a series on metamorphism. Concepts such as metamorphic facies or grade all allow us to link a metamorphic rock to a particular set of conditions, under which it was metamorphosed. This is a simplification, of course. Hold a piece of schist in your hand: we know… Continue reading Metamorphism: Pressure-Temperature-time paths

Accretionary Wedge – 37: Sexy Geology

Accretionary Wedge #37 called for examples of ‘Sexy Geology’.  Here’s mine: You always remember your first time. I was a young man, freshly graduated and I’d somehow persuaded the government to give me (just) enough money to spend three years studying for a geology doctorate. Once spring arrived I eagerly set off for my field… Continue reading Accretionary Wedge – 37: Sexy Geology