Thickness of clay deck

The card thickness of clay deck is also a product for the peat thickness map compiled by Alterra Wageningen UR (2016) on behalf of the province of South Holland. For the determination of the thickness of the clay deck, profile descriptions also used for the peat thickness map (De Vries, 1999). And if no profiles were known, “average” layer thicknesses were observed according to the legend of the Soil Card. Because the Soil Card provides information up to 120 cm, clay packets that are thicker in a separate class (>=120 cm) are classified. The thickness of the clay deck is important for the oxidation of underlying peat. The thickness of the clay deck indicates the vulnerability of oxidation of underlying peat by groundwater work, deep processing by (agricultural) machinery.