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a. A type of single-tube core barrel made from thin-wall tubing with the
lower end notched into points, which are intended to pick up a sample of
granular or plastic rock material by bending in on striking the bottom of
the borehole or a solid layer. Also used as a fishing tool to recover an
article lost or dropped into a borehole. Syn: basket core lifter;
sawtooth barrel. CF: calyx
b. Wire-mesh strainer in the top of a core barrel to strain out bits of
debris, which might clog up the water ports in the core barrelhead.
Long
Source:
Dictionary of Mining, Mineral, and Related Terms
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