Border horizon
Boundary horizon describes a characteristic stratum boundary found in Central European moors between older, more strongly decomposed black peat and the younger and less decomposed white peat above it . Botanists , geologists and climatologists attribute the emergence of the border horizon to climate changes. In the peat archeology of the border horizon is an important tool for stratigraphic dating embedded in mud archaeological finds .
The term border horizon was coined by the German botanist Carl Albert Weber and is also used in other languages in German spelling.