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 Old Stone (Paleolithic) Age lasted from the first use of stones until the end of the last Ice Age. The Middle Stone (Mesolithic) Age lasted from the end of the last Ice Age until the start of farming. The New Stone (Neolithic) Age lasted from the start of farming until the first use of metal.