Lost Circulation Refers to the loss or escape of drilling fluid into permeable zones made up of fractured or porous rock encountered during drilling.

Mafic A geological term referring to igneous rocks that are equivalent to basalt and diorite in composition.

Magma Molten rock typically having a temperature between 800° and 1100° C (~1500-2000° F). Magma is the source of high-grade geothermal energy in conventional resources.