Metamorphic rock is the result of the transformation of a pre-existing rock type, the protolith, in a process called metamorphism, which means "change in form". The protolith is subjected to heat and ...

A RICH store of observations especially on the metamorphic rocks of Great Britain, numerous excellent drawings of rock sections as seen in the microscope and admirable clarity of statement are the ...

Serpentinite, a metamorphic rock of modest appearance, has not only been a material revered by ancient cultures, but modern science points to it as the possible setting for the planet’s first ...

A rock is intriguing scientists on Mars. The Perseverance rover has discovered a unique striped formation in the Jezero crater. This 8-inch (20 cm) block, named "Freya Castle," is raising questions ...