What could account for chronologically older artifacts being found above younger artifacts in a stratigraphic sequence?

How does sediment generally enter rockshelters?

Sediments deposited primarily through the action of gravity on geological material lying on hillsides are called

The footprints at Laetoli were remarkably well-preserved because:

Mary Leakey’s discovery of fossil footprints in volcanic ash at Laetoli was important because:

How could an archaeologist tell if flowing water rather than human behavior was responsible for the deposition of artifacts at an archaeological site?

Soil development occurs:

The age of the Laetoli footprints was determined by:

A B horizon is:

Reverse stratigraphy would result from which of the following situations?