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.
Paleolithic Age. From the Greek for Old Stone, the early period of human history, from approximately 2,500,000 to 10,000 B.C., during which humans used simple stone tools; sometimes called the Old Stone Age. Nomad. A person who moves from place to place.