This picture shows a 30 micrometer thick rock section of a gabbro from the Rum Layered Intrusion (Scotland). Large clinopyroxene crystals are enclosed in a foliated fine grained groundmass of plagioclase and olivine. The clinopyroxene core crystallized at an early stage, at 1160°C. They were partly molten at 1200°C during successive hot magma injections and subsequently recrystallized, enclosing h ...[Read More]
Imaggeo on Mondays: Cooking crystals in the Earth cauldron
Cooking crystals in the Earth cauldron. Credit: Julien Leuthold (distributed via imaggeo.egu.eu)