Depth:- 14.5cm and 15cm. Please note all measurements are taken at the widest point, if you would like any additional or specific measurements, please ask. Petrified wood (from the Latin root petro meaning "rock" or "stone"; literally "wood turned into stone") is the name given to a special type of fossilized remains of terrestrial vegetation. Petrifaction is the result of a tree or tree-like plants having been replaced by stone via a mineralization process that often includes permineralization and replacement. The organic materials making up cell walls have been replicated with minerals (mostly a silicate, such as opal, chalcedony, or quartz).
In some instances, the original structure of the stem tissue may be partially retained. Unlike other plant fossils, which are typically impressions or compressions, petrified wood is a three-dimensional representation of the original organic material. The petrifaction process occurs underground when wood becomes buried in water-saturated sediment or volcanic ash. The presence of water reduces the availability of oxygen which inhibits aerobic decomposition by bacteria and fungi.
Mineral-laden water flowing through the sediments may lead to permineralization, which occurs when minerals precipitate out of solution filling the interiors of cells and other empty spaces. During replacement, the plant's cell walls act as a template for mineralization. There needs to be a balance between the decay of cellulose and lignin and mineral templating for cellular detail to be preserved with fidelity.
Most of the organic matter often decomposes, however some of the lignin may remain. Silica in the form of Opal-A, can encrust and permeate wood relatively quickly in hot spring environments. However, petrified wood is most commonly associated with trees that were buried in fine grained sediments of deltas and floodplains or volcanic lahars and ash beds. A forest where such material has petrified becomes known as a petrified forest. Royal House Antiques is a privately owned family ran business founded in Wimbledon SW19 and now based in Pulborough RH20.We specialise in finding, restoring very fine luxury antique leather seating, along with every single other type of antique ranging from the 16. We also stock a number of designer brands such as Fritz Hansen, Ralph Lauren, Cavalli, Charles & Ray Eames, Vitra, David Linley, Rolex, Tiffany, Jager Le Coulter and so on. Please view the very detailed pictures as they form part of the description pertaining to the condition. Royal House Antiques cannot be held liable for any independent assumptions made regarding the items we sell, if you are unsure on any point, please feel free to ask for clarity. Please note vintage period and original items such as leather seating will always have natural patina in the form of creasing and wear, we recommend annual waxing to ensure no moisture is lost, also hand dyed leather is not recommended to sit in direct sunlight for prolonged periods of time as it will dry out and fade.
The item "LOVELY PAIR OF 180 MILLION YEAR OLD PRETRIFIED FOSSIL WOOD BOOKENDS DOOR STOPS" is in sale since Tuesday, November 17, 2020. This item is in the category "Collectables\Rocks, Fossils & Minerals\Fossils\Plants". The seller is "royal-house-antiques" and is located in Pulborough. This item can be shipped worldwide.