Transcurrent Fault (Strike-Slip Fault)

Transcurrent Fault (Strike-Slip Fault)

Vertically dipping fault that results from horizontal shear stress. Slip movement during an earthquake is sideways rather than up or down.

Geothermal Glossary

Word of the Week – Hydrothermal Eruption

Word of the Week – Hydrothermal Eruption

Hydrothermal Eruption Rare explosive discharge of hot water and steam that is powerful enough to excavate a crater and lift rock fragments and its pulverized equivalents into the air to produce an apron deposit around the eruption vent.

Word of the Week – Illite

Word of the Week – Illite

Illite A potassium-bearing mica-like clay mineral that is a product of hydrothermal alteration. It commonly replaces feldspars and other alumino-silicate minerals and it forms above ~220°C. It also reflects a weakly acidic pH condition in hydrothermal fluids.

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