one of the three main rock types; formed through the cooling and solidification of magma or lava From Wikipedia, the free encyclopedia ...

BAS, M. J. LE 2001. Report of the Working Party on the classification of the lunar igneous rocks. Meteoritics & Planetary Science, Vol. 36, Issue. 9, p. 1183.

Freya Castle is believed to be a metamorphic rock, which if true could give more detailed information about Mars' volcanic ...

Standing on the summit, surrounded by jagged hunks of rock, I looked out over a seemingly endless forest of crimson, gold and ...

Graphic texture is commonly created by exsolution and devitrification and immiscibility processes in igneous rocks. It is called 'graphic' because the exsolved or devitrified minerals form lines and ...

Commenters discussed how it resembles granite, gneiss ... or metamorphic processes could have created its stripes.” Igneous rocks are connected to volcanic processes while metamorphic rocks ...

Todd Braun is a well-known stone artist whose work is found in many public places and private gardens in Manitoba. Perhaps ...

IN the middle of the last century much interest was shown in the problem of the genesis of igneous rocks, and especially in the manner of origin of diverse rock-types from a common stock or from a ...