Agricultural soils from the North of France		Clay	Fine silt	Coarse silt	Fine sand	Coarse sand	Organic Carbon	Total Nitrogen	CaCO3	pH water
Origin site	Nature	g/kg	g/kg	g/kg	g/kg	g/kg	g/kg	g/kg	g/kg
Liévin	Loess silt	205	255	457	74	9	22.31	1.53	1	6.6
Airon-Saint-Vaast	Reconstituted sands on glaze	111	109	200	341	239	11.71	1.17	16	8
Dompierre-sur-Helpe	Silty alluvium	380	321	268	22	9	37.9	4.03	< 1	5.5
Steenwerck	Alluvions from Lys plain	312	260	293	102	33	12.49	1.36	< 1	7.5
Marcq-en-Ostrevent	Loess	194	236	446	112	12	12.4	1.22	3	7.9