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Cropmark
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Cropmarks appear as light and dark marks in growing and ripening crops. These marks relate to differences in the soil below. For example, parched lines of grass may indicate stone walls. Crops that grow over stone features often ripen more quickly and are shorter than the surrounding crop. This is because there is less moisture in the soil where the wall lies.
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Aerial Photograph
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Aerial photographs are taken during an aerial survey, which involves looking at the ground from above. It is usually easier to see cropmarks and earthworks when they are viewed from above. Aerial photographs help archaeologists to record what they see and to identify new sites. There are two kinds of aerial photographs; oblique and vertical.
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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.
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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.
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Medieval
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1066 AD to 1539 AD (the 11th century AD to the 16th century AD)
The medieval period comes after the Saxon period and before the post medieval period.
The Medieval period begins in 1066 AD.
This was the year that the Normans, led by William the Conqueror (1066 – 1087), invaded England and defeated Harold Godwinson at the Battle of Hastings in East Sussex.
The Medieval period includes the first half of the Tudor period (1485 – 1603 AD), when the Tudor family reigned in England and eventually in Scotland too.
The end of the Medieval period is marked by Henry VIII’s (1509 – 1547) order for the Dissolution of the Monasteries in the years running up to 1539 AD. The whole of this period is sometimes called the Middle Ages.
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Post Medieval
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About 1540 AD to 1750 AD (the 16th century AD to the 18th century AD)
The Post Medieval period comes after the medieval period and before the Imperial period.
This period covers the second half of the reign of the Tudors (1485 – 1603), the reign of the Stuarts (1603 – 1702) and the beginning of the reign of the Hannoverians (1714 – 1836).
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PADDOCK *
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An enclosed field for horses.
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SITE *
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Unclassifiable site with minimal information. Specify site type wherever possible.
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RECTILINEAR ENCLOSURE *
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A monument consisting of an area of land enclosed by a ditch, bank, wall, palisade or similar barrier, where the barrier consists of several straight or near straight sections.
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RECTANGULAR ENCLOSURE *
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A rectangular shaped area of land enclosed by a boundary ditch, bank, wall, palisade or similar barrier.
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SQUARE ENCLOSURE *
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A square shaped area of land enclosed by a boundary ditch, bank, wall, palisade or similar barrier. Small square enclosures (with sides of less than c.20m) have been interpreted as the remains of square barrows of Iron Age date.
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ENCLOSURE *
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An area of land enclosed by a boundary ditch, bank, wall, palisade or other similar barrier. Use 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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SQUARE *
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An open space or area, usually square in plan, in a town or city, enclosed by residential and/or commercial buildings, frequently containing a garden or laid out with trees.
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TARGET *
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Any structure or object, used for the purpose of practice shooting by aerial, seaborne or land mounted weapons.
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* Copyright of English Heritage (1999)
