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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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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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FEATURE *
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Areas of indeterminate function.
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SEARCHLIGHT BATTERY *
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A site in which one or more searchlights were positioned to locate enemy aircraft or surface vessels for the benefit of batteries and night fighter aircraft.
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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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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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RING DITCH *
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Circular or near circular ditches, usually seen as cropmarks. Use the term where the function is unknown. Ring ditches may be the remains of ploughed out round barrows, round houses, or of modern features such as searchlight emplacements.
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ANTI AIRCRAFT BATTERY *
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A site containing one or more artillery pieces and/or rocket launchers for firing at enemy aircraft.
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* Copyright of English Heritage (1999)