Horizon 1
Horizon 1 :
(1) (n). Geology. An informal term used to denote a surface in or of rock, or a distinctive layer of rock that might be represented by a reflection inseismic data. The term is often used incorrectly to describe a zone from which hydrocarbons are produced. See: hardground. (2) (n). Geophysics. An interface that might be represented by a seismic reflection, such as the contact between two bodies of rock having differentseismic velocity, density, porosity, fluid content or all of those. See: fluid contact, lithologic contact, reflection
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