Stone tool industry
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What are stone tools?
Stone tools are artifacts from as early as 2 million years ago, displaying humanity’s earliest technology. Surviving in great quantities, these tools help determine the activities of early humans. Archaeologists classify them by style and use.
During the Paleolithic Period, tools of chipped stone with serrated cutting edges were common. The Neolithic Period saw ground and polished rock tools in widespread use. Rocks like flint and obsidian were favored for toolmaking due to their properties that allow sharp edges when flaked.
Three main types of tools appeared in the Paleolithic Period: core, flake, and blade tools. These were made using techniques like striking one stone against another or using softer materials like antler to create more refined edges.
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Why did early humans make and use stone tools?
Early humans began making stone tools over 2 million years ago, with the oldest examples found in Tanzania's Olduvai Gorge. These tools helped determine the activities of early hominids.
Homo habilis crafted simple choppers by striking stones together to create a sharp edge for cutting, sawing, crushing, and smashing. Over time, toolmaking techniques advanced, leading to refined stone selection and the development of hand axes with longer, sharper edges.
These tools aided in hunting, butchering, clothes making, and adapting to various environments, marking a significant step in human technological advancement and cultural activities.
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What types of stone tools were made in prehistoric times?
During prehistoric times, hominids crafted various stone tools, each representing advancements in technique and adaptation. The earliest known is the Oldowan industry, dating back 1.8 to 1.2 million years ago, featuring simple choppers made by striking stones together to create a sharpened edge.
The Acheulean industry emerged around 1.4 million years ago and displayed more refined methods, using flint, quartz, and quartzite. This era saw the development of the hand axe, a bifacial cutting tool with longer, sharper edges, made using both hard and soft hammer techniques.
Later, the Mousterian industry, associated with Neanderthals, utilized flake tools. In the Late Paleolithic period, toolmaking grew more sophisticated, with the Perigordian and Aurignacian industries in Europe producing as many as 80 different types of implements.
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How do archaeologists identify and study ancient stone tools?
Archaeologists identify and study ancient stone tool industry artifacts by classifying distinct industries based on style and use. Stone tools have survived in great quantities and serve as a major means to determine the activities of hominids.
To establish a chronology, archaeologists use relative and absolute dating techniques. Relative dating involves stratigraphy, observing layers in a site to establish the chronology of different levels relative to each other. Absolute dating methods include radiocarbon dating, which measures the activity of radioactive carbon in organic materials to determine their age, and potassium-argon dating, useful for remains older than 2 million years.
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What does the term 'stone tool industry' mean in archaeology?
In archaeology, a stone tool industry refers to a specific assemblage of artifacts from humanity’s earliest technology, dating back over 2 million years. These tools are crucial for archaeologists in determining the activities of early hominids, and are classified based on style and use.
The earliest known stone tool industry is the Oldowan industry, dating back 1.8 to 1.2 million years ago. More advanced tool industries include the Acheulean, Mousterian, Perigordian, and Aurignacian industries. The Paleolithic Period saw three different techniques for refining stone tools: the hammerrock, the soft-hammer, and pressure flaking.
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How have changes in stone tool industries helped us understand human evolution and culture?
Changes in stone tool industries reveal critical aspects of human evolution and culture. The earliest Oldowan industry, dating back millions of years, features simple choppers, indicating early technological skills of Homo habilis. The Acheulean industry displayed advancements in technique and tool diversity, allowing early humans to adapt to different environments.
Later, the Mousterian industry, associated with Neanderthals, improved upon flake tool technology. The Upper Paleolithic Period saw even more sophisticated tools, as well as the use of bone and antler, which highlights the development of hunting, clothes making, and other tasks that reflect a move towards modern life. These tools demonstrate early humans' increasing ability to adapt, innovate, and create increasingly complex social structures.
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Stone tool industry, any of several assemblages of artifacts displaying humanity’s earliest technology, beginning more than 2 million years ago. These stone tools have survived in great quantities and now serve as the major means to determine the activities of hominids. Archaeologists have classified distinct stone tool industries on the basis of style and use.
The earliest stone industry was found by paleoanthropologists L.S.B. Leakey and Mary Douglas Leakey in the Olduvai Gorge in what is now Tanzania in the 1930s. Called the Oldowan industry, it dates from about 1.8 to 1.2 million years ago, in the Pleistocene Epoch, and consisted of what the Leakeys called choppers, shaped by hitting one stone against another until a sharpened edge was achieved. This could be used for cutting or sawing, while the unflaked end could be used for smashing or crushing. The variety and numbers of choppers found at the site led the Leakeys to identify the people who lived there as Homo habilis, implying “able man.” Remains of the Oldowan industry were also found in North Africa and Europe.
Many early sites unearthed by paleoanthropologists show a more-advanced tool industry, beginning with the Acheulean, which is dated from as early as 1.4 million years ago at Olduvai Gorge. The technique for making tools in the Acheulean industry was a development of the earlier technique, namely striking one stone against another, but the choice of stone was refined. Where flint, which was the ideal toolmaking material, was not available, quartz, quartzite, and other rocks were used.
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As the Acheulean industry progressed, so did the skill with which tools were made. A bifacial cutting implement emerged, called a hand axe, that had longer, straighter, sharper edges than the earlier chopper. The earliest hand axes were made with a hard hammer. More-advanced techniques, however, began about 1 million years ago; rather than simply smashing the rock against a boulder, a soft hammer (usually antler) began to be used. In all, 18 different types of implements have been discovered for the Acheulean industry—including chisels, awls, anvils, scrapers, hammer-stones, and round balls. The evidence indicates that the industry was sufficiently developed to enable early humans to adapt to local conditions and seasonality, as in the temperate forest, temperate grasslands, or subtropics.
The Acheulean industry was followed by the Mousterian, a flake tool rather than core tool industry associated with Neanderthal peoples and others living north of the Sahara and eastward to Asia. In addition to the Mousterian industry, two other distinct industries were found in Africa south of the Sahara—the Fauresmith and the Sangoan. In these the flake tool was improved to become a blade, which is at least two times as long as it is wide.
In the Late Paleolithic Period, tools became even more sophisticated. As many as 80 different types of implements have been unearthed for what are called the Perigordian and Aurignacian industries in Europe. It is believed that these tools were used for hunting and butchering, clothes making, and a great variety of other tasks that moved early humankind closer to modern life. In all, hundreds of highly complex tools have been found, some of which are the prototypes for modern tools.
By 40,000 years ago humans created tools with bone and antler handles that gave them much more leverage. Still later, Cro-Magnons created bone tools with engravings that were probably used only for artistic or ritualistic purposes. The Solutrean Period produced laurel leaf and willow leaf knives that are today valued as works of art.
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