stratum (plural strata)
A layer characterized by certain unifying characteristics, properties, or attributes distinguishing it from adjacent layers.
stress ...
stratum : A horizontal layer of geologic material of similar composition, especially one of several parallel layers arranged one on top of another.
streambed : The channel through which a natural stream or river runs or once ran through.
Stratum, pl. strata: A layer within the earth's crust that generally consists of the same kinds of soils or rock material.
From research vessel surveys, for separate species of fish, each average catch per tow, determined from a series of tows, in each geographic stratum of a region is multiplied by that area (square nautical miles) of the stratum in which the tows are ...
mesolimnion the central stratum between the epilimnion and hypolimnion in a stratified lake; metalimnion; the region occupied by the thermocline
mesothermy phenomenon in .
Also known as a water table or water-bearing-stratum, an aquifer is made up of porous rocks with tiny holes-which is why it is able to store water. There are two types of aquifers: replenishable and non-replenishable fossil aquifers.
Aquifer - A water-bearing stratum of permeable rock, sand, or gravel.
B
Babble - To make a continuous low, murmuring sound, as flowing water.
Confined aquifer. A water-bearing subsurface stratum that is bounded above and below by formations of impermeable, or relatively impermeable soil or rock.
 See also: Spring, Air, Table, Condition, Lakes
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