Sand and lss (a fine earthy deposit) had accumulated above it to a thickness of seventy feet.
According to Penck and Brckner, therefore, the lss is of interglacial age.
In effect, the type of Solutr is assigned to the newer (jngerer) lss deposits.
The lss is intimately associated with accumulations, the glacial and fluvio-glacial origin of which cannot be doubted.
Here we have a sheet of lss which bears no apparent relation to the valley-systems of the region in which it occurs.
I think it helps us better to explain the well-known fact that land-shells are more or less commonly distributed through the lss.
There are different kinds of lss or lss-like deposits, however, and all need not have been formed in the same way.
There can be little doubt, however, that lss does not belong to any one particular horizon.
And it is quite possible that the upper portion of much of the lss of the lower-grounds may have been re-worked in the same way.
All that we know of the lss and its fossils compels us to include this accumulation as a product of the Pleistocene period.