Oilfield Glossary
Oilfield Glossary
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abyssal

Profile of continental margin to abyss
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1. adj. [Geology]
Pertaining to the depositional environment of the deepest area of the ocean basins, the abyss. The depositional energy is low, the abyssal plain is flat and nearly horizontal, and fine-grained sediments are deposited slowly by waning turbidity currents or from suspension in the water. The water is thousands of meters deep (> 2000 m) [6520 ft], so the water is cold and sunlight is minimal.