Row

Factor

Moderate sediments

1

Surface geology

・ rocks

・ crumpled or moderately weathered stones

・ moderately fractured stones

・ granites (igneous)

・ fine limy stones

・ conglomerate

・ lime stone with thick layers

2

Soils

・ moderate texture

・ dispersed boulder

・ limy layers

・ pebble texture

3

Weather

・ moderate rainfalls

・ frequent thunders