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 Age (Paleolithic Era) -from the beginning of human existence until around 12,000 years ago Why do we call this time in history the Stone Age? During this time humans used stone to make tools and stone was used many times as part of the actual tool.