General terms:
* Debris: This is a general term for any loose fragments of rock, dirt, or other material.
* Regolith: This refers to the layer of unconsolidated material covering bedrock, which can include rocks, minerals, soil, and dust.
* Sediment: This is material that has been transported and deposited by natural forces like wind, water, or ice.
Specific terms based on size:
* Gravel: This refers to larger rock fragments, typically between 2 mm and 75 mm in diameter.
* Sand: This is a granular material with particles between 0.0625 mm and 2 mm in diameter.
* Silt: This is a fine-grained sediment, typically with particles between 0.002 mm and 0.0625 mm in diameter.
* Clay: This is a very fine-grained sediment, with particles smaller than 0.002 mm in diameter.
* Dust: This refers to very fine particles of rock and dirt, typically suspended in the air.
Other terms:
* Soil: This is a mixture of rock fragments, organic matter, air, and water, capable of supporting plant life.
* Rock fragments: This is a general term for pieces of broken rock.
The most appropriate term depends on the specific situation and the size of the rock and dirt fragments.
