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.
The Stone Age is further divided into: â¢ Palaeolithic Age (Old Stone Age - 2.5 million to 15,000 years ago - a time period that spans 95% of human history): the age in which stone tools were chipped or flaked.