Sandstone is defined as a rock which is composed of sand-sized grains of various minerals mostly of uniform size and often are smooth and rounded. Arkose is a sedimentary rock, specifically a type of sandstone containing at least 25% feldspar.
The Bronze Age Timeline. Timeline Description: The Bronze Age was a period of time between the Stone Age and the Iron Age when bronze was used widely to make tools, weapons, and other implements. Bronze is made when copper is heated and mixed with tin, creating a stronger metal than copper.
Iron Age Kingdom: Iron Smelting in Africa- Bonus Blog Post. The Iron Age of Africa is generally considered to have taken place between 200 AD and 1000 AD when iron smelting was a practice. In Africa, the Iron Age was not prefaced by the Bronze or Copper Age, instead, all of the metals were brought together. The advantages of Iron are obvious, easier to cut trees with and easier to shave stone. In the 2nd millenium BC, it is believed that Western Asians invented the process of iron smelting.