date created:: 2024-11-16 18:57
date modified:: 2024-11-23 11:51
status:: 🌲evergreen

1.1 Magma is molten rock within the Earth's crust

Magma is rock within the earth that is completely melted. This happens between 800 and 1300* C, depending on the pressure and the rock's composition.

Source: Earle, S (2015) Physical Geology#Chapter 3 Intrusive Igneous rocks

See: 1.1a Lava is magma that has emerged onto the Earth's surface for the difference between magma and lava

See: 1.1c magma is formed at three plate tectonic settings for places where magma is formed

See: 1.1b The composition of magma ranges from ultramafic to felsic for the various different types of magma