what are the characteristics of Gravel
From the edges and corners of the gravel, gravel cemented into a breccia. Particle size greater than 2 mm round
sub-round gravel accounted for more than 30% of the total rock clastic rock
which by the better roundness of the gravel, pebbles cemented into a conglomerate
Glutenite is composed of more than 50% of the diameter of more than 2 mm of particles of the composition of the rock