The phrase "a layer of earth" is correct and usable in written English.
You can use it when discussing geological layers, soil composition, or environmental contexts.
Example: "The archaeologists discovered a layer of earth that contained ancient artifacts."
Alternatives: "a stratum of soil" or "a bed of earth".
They are part of the biosphere - a layer of Earth just like the atmosphere or lithosphere.
Thomson took 500,000 feet of film and stacked the reels in the pool, covered the reels with boards and leveled the rink with a layer of earth.
The difficulty of digging without disturbing existing graves led to bodies often simply being stacked on top of each other to fit the available space and covered with a layer of earth.
According to Skáldskaparmál, blót were made to them both that included money, and a tumulus was made for Hǫlgi that was built with layers of gold and silver, then covered by a layer of earth and stone.
Radio blackouts can occur when a layer of Earth's atmosphere, called the ionosphere, is bombarded with X-rays or extreme ultraviolet light from solar eruptions.
These cement pipes must be covered by a layer of earth at least 60 centimeters thick below the level of the carriageway.
Ms. Kaplan held a colorful place in a layer of New York society made up of flamboyant, surprising and self-invented people -- she had been a suburban housewife in another life -- who are largely known for being seen.
A double film fabricated by depositing first with a layer of Al-doped ZnO on STN then with a layer of Al, Sc-co-doped ZnO on top top was expressed as SA.
It will be followed on Saturday by "Sweet Smell of Success" (1957), whose score, composed by Elmer Bernstein and played by Chico Hamilton's quartet, epitomizes 1950s cool with a layer of Times Square sleaze; and Orson Welles's "Touch of Evil," whose jazz theme was written by Henry Mancini.
A layer of Au (about 7 nm in the thickness) as a catalyst was first deposited on Si substrates with the area of ~8 mm2 by DC sputtering.
For the TEM image of GAAu-MNP as shown in Figure 3c, it was found that GA-MNP seemed to be covered by a layer of Au nanoparticles.
