A sample of rock, ice, snow, soil or sediment obtained by driving a hollow tube into the undisturbed medium and withdrawing it with its contained sample or core.
Cylindrical core retrieved from a hollow steel pipe that is drilled into rock or sediment and brought to the surface for study.
n: 1. a small portion of a formation obtained by using a core barrel and core bit in an existing wellbore. See core bit. 2. a spot sample of the contents of an oil or oil product storage tank usually obtained with a thief, or core sampler, at a given height in the tank.
Cylindrical sample of rock taken from the ground by drilling for research and exploration purposes.
Cylindrical portion of rock measuring a few centimetres wide and several metres long taken from the subsoil.
An undisturbed sample of soil, rock, peat or ice, obtained by driving a hollow metal tube into the material and withdrawing it in the form of a tubular section or core. ___________________________________________________________________________________________________
The long cylinder of rock, about one inch or more in diameter recovered by diamond drilling during exploration.
A cylindrical sample of rock or soil recovered from a borehole.
A cylindrical sample taken from a formation for geological analysis. Typically, a conventional core barrel is substituted for the drill bit and procures a sample as it penetrates the formation.
A cylindrical section of rock usually 5 to 10 cm in diameter and several feet in length that has been extracted from the earth by a core bit for further examination in the laboratory showing cross sections of the strata from depth.
a piece of rock, soil, or ice that is carved, or cut, from the ground using a piece of equipment that works a lot like an
a roughly cylindrical piece of subsurface material removed by a special drill and brought to the surface for examination
A cylinder sample generally 1-5" in diameter drilled out of an area to determine the geologic and chemical analysis of the overburden and coal.
A cylindric rock sample generally 1-5" in diameter drilled out of an area. These samples are then examined geologically and if warranted sent for chemical analysis.
A sample of wood extracted from a trunk or branch, using an increment borer tool. The resulting core can be analyzed for characteristics of growth, structure, and decay, and for species identification.
A sample of the medium obtained to represent the entire bed depth when the bed is being analyzed for capacity or usefulness. A hollow tube is sent down through the bed to extract the sample.
A core sample is a cylindrical section of a naturally occurring medium consistent enough to hold a layered structure.