surface phase

surface phase

[′sər·fəs ‚fāz]
(geochemistry)
A thin rock layer differing in geochemical properties from those of the volume phases on either side. Also known as volume phase.
References in periodicals archive ?
Closures will be required to complete the final surface phase of the works.
The superscripts indicate that the corresponding physical quantity is associated with the reservoir (R), or a bulk phase (L, V) or a surface phase (SL, SV, LV denoting the corresponding two-phase interfaces).
The Company has completed the near surface Phase I core drilling and is currently completing the reserve reporting requirements and other pre-feasibility requirements to determine the open-pit potential of the Black Fox Project.