The scratches visible on the flaked base, or flute, of this obsidian point ... Flaked from a stone core carried as source material, blades were fashioned into knives, scrapers, and other tools.

Blade cores provided a portable source of stone or obsidian for manufacturing different ... Blade flakes were "pre-forms" that could be fashioned into knives, hide scrapers, spear tips, drills ...

Over about 11,500 years, the stone has been fashioned into deadly knives, razor-sharp spear points, arrowheads and darts for atlatls, or spear-throwers. The obsidian columns of Yellowstone have ...

It's important to keep your kitchen knives sharp, but what tool should you use to do so? Here are the pros and cons of ...

Usually basalt, chert and especially obsidian (the black glassy rock ... Remember that usually only stone preserves and is recovered by archaeologists. Stone knife blades (as pictured in Figure 20) ...

The Imperial Valley has been recognized as one of the most unique places for geological study. It may not seem like much to ...

There are a lot of tools and equipment in a kitchen, but most chefs will tell you that a good chef's knife is the most important one. However, finding a good one isn't the easiest task.

A good chef needs a good knife. But the best chefs know how to take care of their tools. Here's how to keep your best knives ...

After putting eight carving knife and fork sets to the test by breaking down and slicing five whole turkeys, two boneless beef roasts, and a ham, we recommend the Messermeister Avanta 2 Piece ...

While there are lots of knife sharpeners on the market to save you from such a fate, sharpening stones have been used for millennia with the earliest proof of them being used dating back 3.3m years.

Flake scars: The mark that is left when a flake has been detached from a stone tool or core. Knife: A type of blade where the working edge is curved or serrated. Mt. Edziza: A volcano in northwestern ...