Judging age by degree of weathering - NE vs SW

Here in New England, the more weathered something is the older it is judged to be. It occurs to me that in an environment like dried glacial lakeshore in Nevada this principle could be wrong. Suppose older stone tools were buried and protected under sedimentation. Then desiccation would gradually expose materials with the younger ones exposed to weathering longer.

In accord with this, desert varnish would build up in reverse chronological order for places that were buried. It is a cautionary tale!