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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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Oblique aerial photograph
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Oblique aerial photographs are taken at angles of less than 90 degrees to the ground. They are usually taken by a photographer through the window of an aeroplane. Oblique aerial photographs are particularly useful for identifying archaeological sites that survive as earthworks, standing monuments and cropmarks. See also vertical aerial photographs.
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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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ARCHAEOLOGICAL FEATURE *
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Use only for features assumed to be archaeological but which cannot be identified more precisely without further investigation .Use more specific term where known
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FEATURE *
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Areas of indeterminate function.
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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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FIELD *
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An area of land, often enclosed, used for cultivation or the grazing of livestock.
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FENCE *
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A construction of wood or metal used to enclose an area of land, a building, etc.
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* Copyright of English Heritage (1999)