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Degradation vacuity
| Словарь стратиграфических терминов |
The space-time value o f the degradationally removed part o f a transgressive-regressive depositional succession; the part o f a lacuna resulting from the degradation o f formerly existing rocks at an unconformity (wheeler, 1964, p. 602).
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Degradation, английский
- Dégradation
- The progressive failure of a machine or lubricant.
- Disintegration of a paint film by heat, moisture, sunlight, or natural causes.
- Debasement and disgrace. the suspension of a petty officer from his station; and also the depriving an officer or soldier of his arms previous to his being delivered over to the civil power for execution.
- In computer systems, a reduction in level of performance or service. degradation in microcomputer performance is indicated by slow response times or frequent pauses for disk access because memory is insufficient to hold an entire program plus the data the program is using.
- The loss of desirable physical properties by a textile material as a result of some process or physical/chemical phenomenon.
Degradation, английский
Degradation factor, английский
Коэффициент снижения производительности; степень деградации
Degradation failure, английский
Постепенный отказ
Degradation mechanism, английский
Механизм ухудшения характеристик
Degradation of cellulose, английский
Degradation of radar defense system, английский
Система постановки (активных и пассивных) радиолокационных помех
Degradation product, английский
Degradation screens, английский
Degradation [geomorphology], английский
The wearing down or away, and the general lowering of the land surface by natural processes of weathering and erosion (e.g., the deepening by a stream of its channel) and may infer the process of transportation of sediment. compare - destructional. gg
Degradation, image quality loss, английский
Loss of image quality or definition for any number of reasons including intentional ones. quote: i don`t like forced development and flashing. because i do like a fairly rich negative with good blacks, i`m not keen on the strong use of fog filters, although on occasion i use them. i don`t like the effect they produce. [also] you`re going to have to make a dupe negative. so you`re into a degradation with the dupe. then any opticals . . . give you further degradation. then . . . the projector is not so good; it hasn`t got a very sharp lens or there`s not enough light. at every stage along the line, the picture`s going to deteriorate . . . so i`m very reluctant to have a degraded negative in the first instance. i think you`re cheating your audience. they`ve got a right to see what`s on the screen. - billy williams [ml].
Degradative ability, английский
Способность разлагать
Vacuity, английский
See degradation vacuity and total vacuity. z zone. a stratigraphic unit in many categories of stratigraphic classification.
Transgressive, английский
Regressive, английский
A регрессивный (ант. progressive) assimilation, dissimilation
Depositional, английский
Succession, английский
- A line of happenings, one after the other she had a succession of miscarriages.
- The orderly progression of changes in a community composition that occurs during development of vegetation in any area; from initial colonization to the attainment of the climax typical of a particular geographic area. micro s.: a dying tree, for example forced by winds to break causes a successional chain of events (also known as degrative succession. - see mosaic climax). autotropic s.: a temporal succession of species location principally involving plants. allogenic s.: a temporal succession of species at a location that is driven by external influences which alter conditions (contrary to autogenic); e.g. silt deposits changes a marshland to woodland. autogenic s.: a temporal succession of species at a location that is driven by processes operating with the community (contrary to allogenic), e.g. primary and secondary succession, that occur on newly exposed land. degraditive s.: degradable resources (feces, dead organisms) are utilized successively by a number of species; there is a link between succession on plant litter and soil formation. heterotrophic s.: a temporal succession of species at a location, principally involving animals. primary s.: soon after a region is denuded, a variety of pioneer species begin to colonize the bare ground and they modify the environmental conditions (e.g. a retreating glacier, early organisms provide the soils needed by succesing organisms - facilitation). secundary s.: follows major changes to an established ecosystem. catastrophic weather events, fire, or human activities all disturb the environment. after such an event on land, well-developed soil remains, giving pioneer species an easy foothold, but also on abandoned agricultural areas. order of s.: once an ecosystem is established, succesion does still take place on a smaller, slower, more complex scale. • degrative oos.: dead organic matter (feces etc ) trigger a succesional change of decomposing organisms until substance is completely recycled. • interactive oos.: interaction between species, e.g. herbivores in an habit; birds feed on caterpillar - too many caterpillars feeding on leaves can decrease competitiveness of plant, in which the bird lives. theories of s.: disturbances in ecosystems open up an area with the following scenarios: • facilitated: only certain pioneer species are capable of becoming established in the open space, but if certain species can exist and establish as adults under prevailing conditions, so that either can be: • tolerated: modification of the environment by early occupants has little or no effect on subsequent recruitment of later successional species, or • inhibited: occupants by early organisms make it less suitable for recruitment of late successional species, e.g. ulva sp.
- The passing of property or legal rights after death. the word commonly refers to the distribution of property under a state’s intestate succession laws, which determine who inherits property when someone dies without a valid will. when used in connection with real estate, the word refers to the passing of property by will or inheritance, as opposed to gift, grant, or purchase.
Unconformity, английский
- A surface of erosion between rock bodies, representing a significant hiatus or gap in the stratigraphic succession. unconformities result from the subaerial or subaqueous exposure of rocks below the unconformity and erosion with loss of part of the older rocks (see section 6.b.2).
- A substantial break or gap in the geologic record where a unit is overlain by another that is not in stratigraphic succession. compare - conformity, discontinuity. gg part 629 - glossary 629-83 (430-vi-nssh, 2008)
- A surface of erosion which separates rocks of two substantially different
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Type locality, английский
The specific geographic locality in which the unit-stratotype of a layered stratigraphic unit or the boundary-stratotype of a boundary between layered units is situated; or lacking a designated stratotype, the locality where the unit or boundary were originally defined or named.
Polarity chronozone, английский
The rocks o f a specified primary polarity; the fundamental unit of worldwide polarity-chronostratigraphic classification (north american stratigraphic code, 1983, p. 870).
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