The phrase "a thin layer of sand" is correct and usable in written English.
It can be used to describe a small, superficial covering of sand on a surface, often in contexts related to geology, construction, or environmental descriptions.
Example: "The beach was covered with a thin layer of sand, making it perfect for sunbathing."
Alternatives: "a light coating of sand" or "a fine layer of sand."
Everybody died, including the driver, and Oumar buried them under a thin layer of sand.
Zinsou is talking about how the city is plagued by flooding, because it lies below sea level and is built on a thin layer of sand.
They must have felt it, because underneath there was already a layer of corpses, over which was spread a thin layer of sand".
Wait until it has frozen, then add a thin layer of sand or flat stones to help keep it that way.
Considering the application of geosynthetics in reinforced slopes and walls with low-permeable backfill soils, a suitable geosynthetic with a thin layer of sand cushion is recommended.
Garbage, packed down tight and then covered with a thin layer of sand, is used to raise the floors of houses that flood regularly in the brief but intense summer rainy season, and it is packed into the dusty streets that otherwise become canals.
The reason might be that a thin layer of fine sand acted as rollers for the rolling of the gravel, leading to the reduction of effective friction resistance during the movement; the interactions between particles became more complicated than they just acted as a single-row roller to lubricate the gravel when excessive amount of fine sand was involved.
The reason might be that a thin layer of fine sand acted as rollers for the rolling of the gravel, leading to the reduction of effective friction resistance during the movement; when excessive amount of fine sand was involved, these rollers were thrown into disarray so that the particles were either blocked or forced into sliding.
A thin layer of fine sands were placed onto the nylon cloth to shelter the macropores and ensure that water infiltrates the soil through the matrix only.
The coastal zone is extensive and benthic substrates consists primarily of a thin layer of slightly silted sand.
With regard to dual-bed configuration, where HZSM-5 was packed below Na Fe3O4 and separated by a thin layer of inert quartz sand, the distance between iron-based and acid sites got larger.
