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1. n. [Geophysics]

The geometrical pattern of groups of geophones relative to the seismic source. The output from a single shot is recorded simultaneously by the spread during seismic acquisition. Common spread geometries include in-line offset, L-spread, split-spread and T-spread.

See: acquisitionaperturearrayextended spreadgeophonegroupin-lineoffsetperpendicular offsetshotpoint