Yorktown Formation

Fossil-rich sediment profile with hammer.

Detailed Description

Photo shows the fossil-rich sediments of the mid-Piacenzian warm period (MPWP) that document the rapid warming and sea level rise between about 3.30 and 3.25 million years agao. The hammer is at the conformable boundary between the Rushmere (below) and Morgarts Beach (above) Members of the Yorktown Formation. 


Image Dimensions: 960 x 1280

Date Taken:

Location Taken: US