Depth (centimeter)

Age (Cal BC/AD years)

Geochemical zones

Character of geochemical zone

0 - 60

900-2000 Cal AD

BGK-7

Organic material, Ca-, Na-, Mg-content maximum with a burned K-rich horizon

60 - 110

1000 Cal BC-900 Cal AD

BGK-6

Organic material, Na-, K-content and mineral calcite maximum

110 - 150

Lateglacial period

BGK-5

Inorganic material maximum, increasing organic material, Kand Na-content

150 - 210

Lateglacial period

BGK-4

Significant inorganic substance, Ca-, Mg-, Fe-content significant

210 - 240

Lateglacial period

BGK-3

Maximum inorganic substance, no organic material, significant water-soluble Ca-, Fe-, Mg-content, carbonate content significant

240 - 250

Lateglacial period

BGK-2

Maximum inorganic substance, no organic material, significant mineral carbonate content

250 - 260

Lateglacial period

BGK-1

Maximum inorganic substance, minimal organic material content