its clay soil n please refer to the link below u will get aal the info regarding soil structures... http://www.pedosphere.com/volume01/pdf/section_03_02_01.pdf
Fertilization
fertile material
Clay is less than 0.002 silt is 0.002 to 0.05 and sand is 0.05 to 2in
its called clay loam. A true loam is approximately 40% each of sand and silt and 20% clay. This mineral mixture should be 92% of your soil and 8% organic material for your best growing mixture.
Loam
Fertilization
fertile material
Clay is less than 0.002 silt is 0.002 to 0.05 and sand is 0.05 to 2in
Clay
Sand. The sand has space between all of the little grains, clay is stuck together with less space.
swamp+sand=clay
mud+sand=clay
Clay is soft and sand is like sand water
Slump
Loam.
Yes if the sand is on the clay it can roll even if the sand was not on the clay.The clay can still roll.
Loam