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Craton
| Diamond Glossary (алмазы и бриллианты - глоссарий терминологии) |
- A large, ancient, and geologically stable portion of the continental lithosphere that has been little deformed for a prolonged period of geologic time. in diamond geol- ogy, a craton is the archean portion of a much larger cra- tonic block, in which diamondiferous kimberlites are located on-craton. non-diamondiferous kimberlites are lo- cated off-craton.
- A part of the earth`s crust that has attained stability, and has been minimally deformed for a prolonged period. the term is now restricted to continental areas of largely precambrian rocks. gg
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Continental, английский
- Limits, united states границы континентальной части сша
- Континентальный
Lithosphere, английский
- The rigid outer layer of the earth comprising the continental and oceanic crust and a portion of the upper mantle. it is divided into twelve major plates, the boundaries of which are zones of intense geological activity. see also atmosphere, hydrosphere.
- The solid outer portion of the earth, consisting of the crust and upper mantle, that is approximately 100 km thick. longshore (or littoral) current
- That part of the earth consisting of the crust and the upper mantle to a
Diamondiferous, английский
Any substance containing diamonds; generally applied to rock or alluvial material containing diamonds but also may be used in referring to other diamond-impregnated substances, such as the crown of a diamond-impregnated bit.
Restricted, английский
Placed on a list that dictates that the trader may not maintain positions, solicit business, or provide indications in a stock, but may serve as broker in agency trades after being properly cleared. traders are so restricted due to investment bank involvement with the company on nonpublic activity (i.e., mergers and acquisitions defense), affiliate ownership, or underwriting activities; signified on the quotron by a flashing "r." a restricted list and the stocks on it should never be conveyed to anyone outside of the trading areas, much less outside the firm. see: grey list.
Precambrian, английский
Geological, английский
Геологический
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Geothermal gradient, английский
- The rate of increase of temperature with depth in the earth, with an average value of approxi- mately 25°c per km.
- The rate of temperature increase in the earth as a function of depth. temperature increases an average of 1° fahrenheit for every 75 feet in descent.
- The rate of temperature change with increasing depth into earth.
- Rate at which the earth’s temperature increases with depth, indicating heat fl owing from the earth’s warm interior to its colder parts. global warming potential (gwp): gwp is an index, based upon radiative properties of well-mixed greenhouse gases, measuring the radiative forcing of a unit mass of a given well-mixed greenhouse gas in today’s atmosphere integrated over a chosen time horizon, relative glossary, acronyms, chemical symbols and prefi xes annex i to that of co. the gwp represents the combined effect of the differing lengths of time that these gases remain in the atmosphere and their relative effectiveness in absorbing outgoing infrared radiation. the kyoto protocol ranks greenhouse gases on the basis of gwps from single pulse emissions over subsequent -year time frames. see also climate change and co- equivalent emission.
Alluvial, английский
- A sorted or semi-sorted sediment deposited during comparatively recent geologic time by a stream or other moving body of water, and which occasionally contains concentrations of valuable minerals.
- A term commonly, although incorrectly, used by some drillers as a synonym for overburden. see overburden.
- Relating to deposits made by flowing water.
- Pertaining to material or processes associated with transportation and/or subaerial deposition by concentrated running water. compare - colluvial. gsst
- Of or pertaining to alluvium; alluvial soil.
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