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Geophysical Survey
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The measuring and recording of electrical resistivity or magnetism in order to determine the existence and outline of buried features such as walls and ditches. Geophysical techniques include resistivity survey, magnetometer survey and ground penetrating radar.
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Earthwork
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Earthworks can take the form of banks, ditches and mounds. They are usually created for a specific purpose. A bank, for example, might be the remains of a boundary between two or more fields. Some earthworks may be all that remains of a collapsed building, for example, the grassed-over remains of building foundations.
In the winter, when the sun is lower in the sky than during the other seasons, earthworks have larger shadows. From the air, archaeologists are able to see the patterns of the earthworks more easily. Earthworks can sometimes be confusing when viewed at ground level, but from above, the general plan is much clearer.
Archaeologists often carry out an aerial survey or an earthwork survey to help them understand the lumps and bumps they can see on the ground.
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Roman
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About 43 AD to 409 AD (the 1st century AD to the 5th century AD)
The Roman period comes after the Iron Age and before the Saxon period.
The Roman period in Britain began in 43 AD when a Roman commander called Aulus Plautius invaded the south coast, near Kent. There were a series of skirmishes with the native Britons, who were defeated. In the months that followed, more Roman troops arrived and slowly moved westwards and northwards. more ->
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SITE *
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Unclassifiable site with minimal information. Specify site type wherever possible.
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SETTLEMENT *
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A small concentration of dwellings.
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BUILDING *
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A structure with a roof to provide shelter from the weather for occupants or contents. Use specific type where known.
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STONE *
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Use only where stone is natural or where there is no indication of function.
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FEATURE *
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Areas of indeterminate function.
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VILLA *
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A term for a type of house, with varying definitions according to period. Roman villas were high-status and usually associated with a rural estate, whereas Georgian and later period villas were often semi-detached, town houses.
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STRUCTURE *
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A construction of unknown function, either extant or implied by archaeological evidence. If known, use more specific type.
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FARM *
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A tract of land, often including a farmhouse and ancillary buildings, used for the purpose of cultivation and the rearing of livestock, etc. Use more specific type where known.
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EARTHWORK *
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A bank or mound of earth used as a rampart or fortification.
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* Copyright of English Heritage (1999)