Which preposition to use with stratify

in Occurrences 1%

Continuing our course along the river west till 1.55 p.m., when it turned north, and at 2.20 p.m. north-west; at 3.0 p.m. the banks of the stream became very high, and stratified in a remarkable manner, the lower rocks in thin beds dipping to the east, while the superincumbent rocks of red sandstone were horizontal.

with Occurrences 1%

Animal remains, stratified with porous earth or the sweepings of cities, and disposed in long heaps or walls, protected from rain, but exposed to the prevailing winds, soon form nitrous salts, and a large space covered with these deposits carefully tended forms a saltpetre plantation.

Which preposition to use with  stratify