Gravel is a geological term, referring to loose, unconsolidated rock fragments larger than sand (generally between 2 mm and 75 mm in diameter) but smaller than cobbles.

The specific composition and origin of gravel varies depending on the location and geological processes that formed it.

Therefore, instead of a single scientific name, gravel is described by its characteristics:

* Size: The size range of the fragments (e.g., fine gravel, coarse gravel)

* Composition: The type of rock fragments (e.g., limestone gravel, granite gravel)

* Origin: How the gravel was formed (e.g., alluvial gravel, glacial gravel)

For example, a geologist might refer to "glacial till" or "alluvial gravel" to describe a specific type of gravel based on its origin.