Drill Core

Drill Core

Intact cylindrical shaped sample of rock obtained during drilling with a special coring bit. Although commonly narrow in diameter (e.g., 1-4″ or 25-100 mm), it preserves a geological record that makes it possible to interpret the sequence of mineral formation, fracturing, and vein filling.

Geothermal Glossary

Word of the Week – Adularia

Word of the Week – Adularia

Adularia Hydrothermal potassium bearing feldspar that forms in volcanic hosted geothermal reservoirs and is a favorable indicator of boiling and permeable conditions.

Word of the Week – Aquifer

Word of the Week – Aquifer

Aquifer Porous and permeable rock unit or unconsolidated layer in the subsurface in which all the pores and voids are filled with water. Water supply for wells comes from aquifers.

Word of the Week – Basalt

Word of the Week – Basalt

Basalt Dark grey fine grained volcanic rock composed of plagioclase, pyroxene and olivine, with relatively low silica (45-52 wt %). The composition reflects an upper mantle origin. Basalt is the most common type of volcanic rock on Earth, and it erupts from mid-ocean...

Utah FORGE

Advancing innovative technologies to unlock Earth’s limitless geothermal energy.