The foraminiferal content of two clay samples, one from the quick clay at Bekkelaget (sample nr. 1142) and one from the underlying deposit (sample nr. 1145), was examined for stratigraphic determination of the deposits. The quick clay appeared to be of Post-Glacial age (Isocardia-clay), whereas the underlying one was of Late-Glacial age.
The stratigraphic position of the quick clay at Bekkelaget, Oslo.