Pebble tools

Note the excellent control exhibited in the shaping of this tool. Also note that all of the cortex has been removed. Finally, compare the amount of effective cutting edge on this tool to the amount of effective cutting edge on the large pebble chopper illustrated in that section. This technique is clearly an improvement in efficiency as well as technique. The Acheulean Handaxes were made in very much the same way that the other two types of tools were manufactured.

That is, they were produced by bifacial flaking using the hard hammer technique for initial shaping. A soft hammer technique was then used for final shaping and to produce a thin, sharp cutting edge.

The last step was more common in the latter portion of the time period when these tools were being manufactured. If you are working on Assignment , then you should return to the Exercise menu, by clicking on the "Main" button below, to continue at this point.

You have just been introduced to the basic principles of lithic technology. The techniques and the major tool types illustrated in this exercise have all been found in the deposits at Olduvai Gorge. We hope that this introduction will help you in the exercises that follow. Contents 2. Introduction 3. Fracture Mechanics 4. Flake Morphology 5. World's Greatest Pools. Check out award winning pools from our annual World's Greatest Pools competition showcase.

Play Video. Beauty that Lasts. Expertly designed aggregate, delivering exquisite water colors Careful and consistent sourcing and screening We never compromise on quality. Finding Your Finish. Video: High Desert Design. Follow the Mac manual installation instructions. Download the relevant package: Linux bit Linux bit. Install the SDK by following the manual installation instructions.

However, you can choose from alternative strategies to develop watchfaces and watchapps on Windows, which are detailed below. CloudPebble is the official online development environment for writing Pebble apps.