Sandstone vs Arkose Characteristics Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Sandstone vs Arkose characteristics assist us to distinguish and recognize rocks.
The first such period is referred to as the Paleolithic, or Old Stone Age. The Old Stone Age began about 2 million years ago with the development of the first tools by Homo habilis and lasted until around 12,000 years ago.
It was found in Lower Awash Valley in Ethiopia. Stones were also used to make fire. And since in those times humans used stone for almost everything they did, we call it The Stone Age. The Stone Age ended somewhere in between 6000 BC to 2500 BC; around this time stone tools got replaced by tools made of copper.he Stone Age went on for a long time. Obviously in the beginning of the Stone Age rock shelters were the way to go. Any signs of trouble and the humans would go hiding in the caves. In India, the Bhimbetka rock shelters show the earliest signs of human life in the region.