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OS Card
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Ordnance Survey Record Card. Before the 1970s the Ordnance Survey (OS) were responsible for recording archaeological monuments during mapping exercises. This helped the Ordnance Survey to decide which monuments to publish on maps. During these exercises the details of the monuments were written down on record cards. Copies of some of the cards are kept at the Warwickshire Sites and Monuments Record. The responsibility for recording archaeological monuments later passed to the Royal Commission on Ancient and Historic Monuments.
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SMR Card
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Sites and Monuments Record Card. The Warwickshire Sites and Monuments Record began to be developed during the 1970s. The details of individual archaeological sites and findspots were written on record cards. These record cards were used until the 1990s, when their details were entered on to a computerised system. The record cards are still kept at the office of the Warwickshire Sites and Monuments Record.
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Field Survey
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The term ‘field survey’ is used to describe all work that does not disturb archaeological deposits below the ground through an excavation. Field survey techniques involve recording measurements that help archaeologists draw plans or diagrams of archaeological features. There are a variety of different field survey techniques, including geophysical survey, building recording survey, field walking survey, landscape survey and earthwork survey.
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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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SITE *
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Unclassifiable site with minimal information. Specify site type wherever possible.
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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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GULLY *
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A deep gutter, drain or sink.
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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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LINEAR FEATURE *
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A length of straight, curved or angled earthwork or cropmark of uncertain date or function.
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SEWAGE WORKS *
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A group of buildings in which local sewage is filtered and purified in large rectangular or circular tanks.
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GRAVEL PIT *
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A steep-sided pit formed by, and for, the extraction of gravel.
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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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* Copyright of English Heritage (1999)
