Basalt Wedge (image) Vanderbilt University Share Print E-Mail Caption A very small faceted basalt wedge. Basalt is a local material. This tool, also found at MVI, was made 15,000-16,000 years ago. It would have been used for woodworking. Credit (Courtesy Tom Dillehay) Usage Restrictions (Courtesy Tom Dillehay) Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.