What is Ophiolite?

Ophiolites

Large sheets of mafic to ultramafic rocks.

 

1. Found at the ancient subduction zone or mountain orogeny (after erosion)
2. UM peridotites has major rocks as; Harzburgite, Dunite, subordinate amounts of Lherzolite, wherlite and pyroxenite.
3. Mineralogy is dominated by olivine, opx, cpx and lesser amounts of plagioclase + oxides (magnetite, ilmenite and chrome rich spinel)
4. Represents mantle up to 7km only.