Complete melting of target material produced by the shock of a meteoric impact. Different minerals will experience certain shock effects at different pressures and temperatures. For example, dense target rocks like A phaneritic, intrusive igneous rock made with a modal composition (i.e. volume%) > 90% plagioclase feldspar of undefined composition (anorthitic to albitic, or combination thereof), and a small mafic component between 0 - 10% such as pyroxene, ilmenite, magnetite, and olivine 1. The name anorthosite is derived from the calcium-rich Click on Term to Read More will typically experience whole rock melting above 50 to 60 GPa, while chondritic rocks require more than 70 to 75 GPa. At these pressures, the target rock will experience a near instantaneous rise of temperature of at least 1500 K. Above ~100 GPa most all rocks will vaporize.