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Radiocarbon Dating
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Another name for radiocarbon dating is C14 dating. It is used to find out how old some archaeological remains are. Archaeologists do this by measuring the amount of radioactive carbon left in samples of organic material (from the remains of plants or animals).
All organic materials contain radioactive and non-radioactive carbon in fixed amounts while they are part of living plants or animals. When the plant or animal dies the radioactive carbon starts to decay. By comparing the amount of radioactive carbon left in the organic material with the amount of stable carbon, archaeologists can find out how old it is.
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Prehistoric
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About 500,000 BC to 42 AD
The Prehistoric period covers all the periods from the Palaeolithic to the end of the Iron Age. This is a time when people did not write anything down so there is no documentary evidence for archaeologists to look at. Instead, the archaeologists look at the material culture belonging to the people and the places where they lived for clues about their way of life.
The Prehistoric period is divided into the Early Prehistoric and Later Prehistoric. The Early Prehistoric period covers the Palaeolithic and Mesolithic periods. The Later Prehistoric period covers Neolithic, Bronze Age and Iron Age times. more ->
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Mesolithic
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About 10,000 BC to 4001 BC
Mesolithic means 'Middle Stone Age'. It is the period that comes between the Palaeolithic (Old Stone Age) and the Neolithic (New Stone Age).
The Mesolithic period is a period of transition from the way people were living during the Palaeolithic period as hunter-gatherers to the development of farming in the Neolithic period. more ->
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Iron Age
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About 800 BC to 43 AD
The Iron Age comes after the Bronze Age and before the Roman period. It is a time when people developed the skills and knowledge to work and use iron, hence the name ‘Iron Age’ which is given to this period. Iron is a much tougher and more durable metal than bronze but it also requires more skill to make objects from it. People continued to use bronze during this period. more ->
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SITE *
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Unclassifiable site with minimal information. Specify site type wherever possible.
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FEATURE *
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Areas of indeterminate function.
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GULLY *
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A deep gutter, drain or sink.
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ROAD *
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A way between different places, used by horses, travellers on foot and vehicles.
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PIT *
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A hole or cavity in the ground, either natural or the result of excavation. Use more specific type where known.
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DITCH *
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A long and narrow hollow or trench dug in the ground, often used to carry water though it may be dry for much of the year.
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STREAM *
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A natural flow or current of water issuing from a source.
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* Copyright of English Heritage (1999)