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Erosional vacuity
| Словарь стратиграфических терминов |
A term used by wheeler (1958b, p. 1057), later replaced by “degradation vacuity” (wheeler, 1964, p. 602).
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Erosional, английский
Erosional unconformity, английский
Erosional velocity, английский
Vacuity, английский
See degradation vacuity and total vacuity. z zone. a stratigraphic unit in many categories of stratigraphic classification.
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.
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Prostratigraphy, английский
A term used for “preliminary stratigraphy” including lithologic and paleontologic studies without consideration o f the time factor (schindewolf, 1954a, p. 25).
Baselap, английский
A term describing termination o f strata along the lower boundary o f a depositional sequence, used only where discrimination between onlap and downlap is difficult or impossible (mitchum, 1977, p. 205). bed. a layer of sediments or sedimentary rocks bounded above and below by more or less well-defined bedding surfaces. a bed is the smallest formal unit in the hierarchy of sedimentary lithostratigraphic units. used commonly as a synonym of “stratum” and “layer” (see section 5.c.4 and
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