core sample


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core sample

[′kȯr ‚sam·pəl]
(geology)
A sample of rock, soil, snow, or ice obtained by driving a hollow tube into the undisturbed medium and withdrawing it with its contained sample or core.

core

core, 6
1. The center of a plywood or crossbanded construction; it may consist of lumber (solid or glued) or particleboard; serves as a base for veneer.
2. The internal structure in a hollow-core door.
3. The wood chips cut from a mortise.
4. The metal bar to which a handrail is attached.
5. The internal structure which serves as a base for complex plasterwork.
6. The molded open space in a concrete masonry unit.
7. The filling within a thick hollow stone wall.
8. The filling between a lintel and relieving arches.
9. A cylindrical sample of hardened concrete or rock obtained by means of a core barrel and drill.
10. A part of a multistory building, containing a variety of service and utility functions, as elevators, stairwells, etc.
11. That part of a magnetic circuit (usually steel or iron laminations) about which are wound coils in electromagnetic devices such as transformers, solenoids, relays, etc.; a magnetic core.
12. (Brit.) The conductor of a cable with its insulation, but not including any outer protective covering.
13. That portion of a grille, 2 contained within the frame.
14. Of gypsum board, the hardened material filling the space between a face paper and a back paper; consists primarily of gypsum with additives.
15. (British) Same as blockout.
References in periodicals archive ?
Physical properties are very similar for borehole core samples and surface analogues.
Also, the pressure difference due to gravity and vertical orientation of the core sample is negligible compared to the pressure difference between the injector and the producer.
Rather than using models, array sensor readings or personal expertise to decide where to make a series of test holes, geologists can now utilize this instrument to rapidly access the mineral makeup of the core samples as soon as they are extracted.
For example, acoustopolariscopy has shown that the presence of significant heterogeneity and a high degree of manifestation of effect of the linear acoustic anisotropy of absorption distinguish core samples of the SD-3 rocks.
Corell, assistant director for Geosciences of the National Science Foundation, said the core samples are the strongest evidence yet that an asteroid impact caused the extinction.
The team, on board the survey vessel Greatship Maya, will gather core samples, some of which will reach down to 150m (490ft) below the seabed.
The Minister said there had been a 300 per cent increase in viewing of core samples over the past 10 years.
Core samples have shown that some North American dune fields that scientists thought had been frozen since the last ice age actually have been on the move during the past few centuries.
During its first 90 days on Mars, the rover will stick close to the lander, gathering samples, included core samples it will drill from solid rock, as quickly and efficiently as possible.
When university botanist Paul Buck takes core samples of sugar maple trees, there's a good chance his work might be interrupted by the buzzing posterior of a diamondback rattlesnake or the midsummer tantrum of a buffalo bull.
Contract notice: Ct-scanner with multi-focus transmission tube for cylindrical core samples with sample positioning system.