deep layer

deep lay·er

in a stratified structure, the stratum that lies beneath all others, farthest from the surface. See: deep layer of levator palpebrae superioris, deep layer of temporal fascia.
Synonym(s): lamina profunda [TA], deep lamina
References in classic literature ?
Along the tops of the bars were deep layers of dust--a further indication that the passage had lain long unused.
With war spears they loosened the thick, black loam and the deep layers of rotting vegetation.
A deep layer of wood shavings combined with hay will provide the perfect material to allow your gerbil to do some burrowing.
0 and higher earthquakes a year although they often occur in a deep layer of the earth or offshore so we do not feel them as strongly, according to UDN.
Assistant curator Jay Haywood, said: "We make sure we always keep a deep layer of gravel in the giraffe paddock so it keeps their hooves in a good condition.
During The Construction Of The Canals, From The Mid 1700~S To Mid 1800~S, It Was Placed In A Single Deep Layer Using Local Soils Wherever Possible To Minimise Haulage Of Materials.
Lay down a deep layer of homemade compost or bark mulch over the root zone now to trap in summer warmth.
This is the first report of ventilation event in a deep layer of a Patagonian fjord.
This deep layer additionally involves small blood vessels which the laser coagulates leading to much less bruising put up operatively.
The thick, deep layer that then circulates outward, known as North Atlantic Deep Water, has a strong influence on global ocean circulation and climate.
The survivors have been demanding the construction of houses at a safe location and retrieval of corpses from the deep layer of mud.
Drenched in red juice with seeds and pulp in their hair, festival-goers hurled fistfuls of tomato gloop at one another and bathed in a deep layer of mush left in the street -- 130 tonnes (286 pounds) of tomatoes overall.