1. a coarse-grained metamorphic rock composed primarily of garnet and pyroxene, formed under high pressure and temperature conditions
Usage: geology

Examples

• The geologist identified the dark green rock as eclogite based on its mineral composition.
• Eclogite forms deep within the Earth’s crust under extreme pressure.
• The mountain range contained outcrops of eclogite that had been brought to the surface.
• Scientists study eclogite to understand processes occurring in the Earth’s mantle.
• The eclogite sample showed the characteristic red garnet crystals embedded in green pyroxene.
• This eclogite likely formed at depths of 50 kilometers or more beneath the surface.