Three-age system?

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The three-age system is a system of classifying human prehistory into three consecutive time periods, named for their respective predominant tool-making technologies:

• The Stone Age
• The Bronze Age
• The Iron Age

Have to see

Contents 1 Origin 2 Divisions 3 Dating 4 Difficulties 5 See also

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Origin

Its formal introduction is attributed to the Dane Christian Jürgensen Thomsen in the 1820s in order to classify artefacts in the collection which later became the National Museum of Denmark. Thomsen was not the first to use tool-making materials as a basis for classifying prehistoric societies; the Frenchman, Nicholas Mahudel had proposed a similar system in the early eighteenth century and the idea gathered supporters in the intervening hundred years.

Thomsen and his predecessors argued that nobody would have used stone tools if bronze ones had been available and that similarly, no one would have wanted to use bronze tools if there had been iron ones around instead. Reasoning that the advances must therefore have come in chronological sequence, he suggested this as a workable basis for dating artefacts and sites. Such a system was revolutionary and a vast improvement on the disorganised nature of previous prehistoric archaeology.

Divisions

Later, the Stone Age was divided into the Palaeolithic and the Neolithic and further subdivisions were introduced to divide all the ages into early, mid or late (or lower, middle and upper in the case of the Palaeolithic) sections. There are also the Mesolithic and Epipaleolithic periods between the Palaeolithic and Neolithic.

In some cultures, archaeological evidence has made it necessary to add a Copper Age period between the Neolithic and the Bronze Age. The term Megalithic does not refer to a period of time and merely describes the use of large stones by ancient peoples from any period.

The discovery of thousands of carved jades in the Liangzhu region of Ancient China lends support for a "Jade Age" previous to the Bronze Age 1).

Dating

Advances made in the fields of seriation, typology, stratification and the associative dating of artefacts and features permitted even greater refinement of the system. However, because no precise numerical date could be given to finds using the three age system, they could only be placed in a relative sequence. Elaborate efforts were often made to align European and Near Eastern sequences with the datable chronology of Ancient Egypt; but more direct and convincing scientific dating methods such as carbon dating were not invented until the mid twentieth century.

Difficulties

The three age system has been difficult to apply fully outside Europe. Cultures developed at different rates or missed out some of the stages of development altogether. Amazonian tribes in South America remain in the Neolithic for example, while there was no Bronze Age south of the Sahara and people living there went straight from using stone to iron.

It also soon became apparent that the switches from one age to another did not happen quickly or decisively. Flint tools remained in use in a limited fashion into the Iron Age in Europe and early metal items often appear in what should technically be the Neolithic.

Although the three age system has been rendered less and less accurate by modern archaeological discoveries, it still remains the bedrock of prehistoric archaeology as the terms have become ingrained in people's minds, including those of archaeologists. Their clarity and explicability mean that the field and the long periods of time involved in prehistoric archaeology can also be more easily conveyed to the public.

See also

• list of archaeological periods

Three-age system: Stone Age | Bronze Age | Iron Age List of archaeological periods

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