OSL (optically stimulated luminescence) dates on soils above ice age strata show pre-Clovis is at least older than 14,000.May 2002 — Geologists find new profile showing ancient soil lying between Clovis and pre-Clovis, confirming the age of ice age soils between 16,000 - 20,000 years.Radiocarbon tests of carbonized plant remains where artifacts were unearthed last May along the Savannah River in Allendale County by University of South Carolina archaeologist Dr.

optically stimulated luminescence dating laboratory-82

The absolute age is not known." The revelation of an even older date for Topper is expected to heighten speculation about when man got to the Western Hemisphere and add to the debate over other pre-Clovis sites in the Eastern United States such as Meadowcroft Rockshelter, Pa., and Cactus Hill, Va.

In October 2005, archaeologists will meet in Columbia for a conference on Clovis and the study of earliest Americans.

For five years, Goodyear continued to add artifacts and evidence that a pre-Clovis people existed, slowly eroding the long-held theory by archaeologists that man arrived in North America around 13,000 years ago.

Last May, Goodyear dug even deeper to see whether man's existence extended further back in time.

The conference will include a day trip to Topper, which is sure to dominate discussions and presentations at the international gathering. Al Goodyear and his team dig up to a meter below the Clovis level and encounter unusual stone tools up to two meters below surface.

May 1999 — Team of outside geologists led by Mike Waters, a researcher at Texas A&M, visit Topper site and propose a thorough geological study of locality.

May 2000 — Geology study done by consultants; ice age soil confirmed for pre-Clovis artifacts.

May 2001 — Geologists revisit Topper and obtain ancient plant remains deep down in the Pleistocene terrace.

Goodyear developed his interest in archaeology in the 1960s as a member of the F1orida Anthropological Society and through avocational experiences along Florida's central Gulf Coast.