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 spreading ridges and hot spots (e.g., Hawaii and Iceland). The intrusive coarsely crystalline igneous rock equivalent is called gabbro.

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Word of the Week – Tephra

Word of the Week – Tephra

Tephra Airborne particles of rock and ash produced by an explosive volcanic eruption. Tephra commonly deposits as a blanket that drapes over the underlying topography.

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Word of the Week – THMC

Word of the Week – THMC

THMC Acronym that stands for thermal, hydrological, mechanical, and chemical effects that is evaluated simultaneously when running numerical simulations of reservoir behavior during...

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