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Waterlogged wood is a wooden object that has been submerged or partially submerged in water and has affected the original intended purpose or look of the object. . Waterlogged wood objects can also include wood found within moist soil from archaeological sites, underwater archaeology, maritime debris, or damaged w
The major archaeological problem with waterlogged finds, particularly wood, is that they deteriorate rapidly when they are uncovered, beginning to dry and crack almost at once. They therefore need to be kept wet until treated in a laboratory. Conservation measures explain why wet archaeology costs around four times as much as dry archaeology.
Underwater logging is the process of logging trees from underwater forests. When artificial reservoirs and dams are built, large areas of forest are often inundated; although the trees die, the wood is often preserved.
The conservation of waterlogged wood is a complex process that involves impregnating. The impregnation process involves replacing the water with a material that will strengthen the structure of the wood without causing the wood to contract or come apart. [8] There are different methods used to impregnate wood: [14] Polyethylene glycol (PEG) method
The five common chemical agents that damage wood are: Light – Creates a chemical reaction within the cell walls of wood, leading to a change in color or texture; Acids – Cause wood to become brittle. Alkalies – Cause the fibers of the wood to separate and break down. Salts – Similar to alkalies, salts break down the fibers of wood.
An alder carr at Moor Park, Farnham, Surrey in England, UK. A carr is a type of waterlogged wooded terrain that, typically, represents a succession stage between the original reedy marsh and the likely eventual formation of forest in a sub [clarification needed]-maritime climate. [1]
The reserve is part of Rushbeds Wood and Railway Cutting, an 80.2-hectare (198-acre) biological Site of Special Scientific Interest. This includes a section of the Chiltern Main Line railway cutting, which runs along the north-east side of the BBOWT reserve. [2] [3] The site is ancient woodland on heavy clay soils which are often waterlogged.
Much of the weight was due to the boat's waterlogged condition which had preserved the wood and kept it from rotting. The wood was slowly dried at the York Archaeological Trust after it had been immersed for 18 months in polyethylene glycol, a chemical which penetrated the wood and provided strength. [2]