Relative dating of the pennsylvanian period tommy lee dating 2016


16-Jan-2018 20:50

relative dating of the pennsylvanian period-23

Adult chat amercan girls

In the late 1790's, an English canal builder, William Smith (1769 - 1839), discovered the most important tool for relative age dating.

Links to references for material in this list can be found at the KGS earth history web site.

Hence the age of a layer of rock could be determined by its characteristic faunal content.