The phrase "a shallow layer of" is correct and usable in written English.
It can be used to describe a thin or superficial amount of something, often in a physical or metaphorical context.
Example: "The archaeologists discovered a shallow layer of soil that contained ancient artifacts."
Alternatives: "a thin layer of" or "a superficial layer of".
The frequent mowing prevents flowering, and all that is visible is a shallow layer of grass.
Pour a shallow layer of water in the bottom of a roasting tin.
The cathode in such a cell is a shallow layer of mercury flowing across the bottom of the vessel; graphite anodes extend down into the brine electrolyte.
In addition, some species, such as the striped mud turtle (K. baurii), survive drought periods through estivation (dormancy) under a shallow layer of mud.
This produces the very warm, dry conditions above a shallow layer of oceanic stratus clouds found in the eastern extremes of the subtropical Atlantic and Pacific ocean basins.
Rainfall-triggered landslides are a recurring problem in Korea due to a combination of mountainous terrain, a shallow layer of alluvial soil, and associated weather conditions (Hungr et al. 2001; Park et al. 2013).
The thick UC in this tile, which is covered by a very shallow layer of Sed (Figure 2), is predicted to give a signal of ( {7.6}_{-1.4}^{+1.5} ) TNU.
Neglecting mechanical support in such cases gives results which are fairly accurate, but limited by the presence at the top of the sediment of a shallow layer in which mechanical support is significant.
Based on the data presented in [44, 45] for soil bacterium Bacillus subtilis, the following parameter values for these microorganisms are used: Dm = 1.3 × 10-10 m2/s, Ds = 2.12 × 10-9 m2/s, Δρ = 100 kg/m3, n 0 * = 10 15 cells/m 3, θ = 10-18 m3, and H = 2.5 × 10-3 m (or 2.5 mm, this is a typical depth of a shallow layer; this size is also typical for a microdevice).
Prepare for pumping by first adding an initial shallow layer of hot foundation water to the bottom of the lauter tun that just covers the false bottom.
The layer with the lower velocity is assumed to be the basement layer in the static correction, which provides an image of shallow layers, because a shallow layer usually has a lower velocity property than that in the layers below them.
