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Xylophagy is a term used in ecology to describe the habits of an herbivorous animal whose diet consists primarily (often solely) of wood. The word derives from Greek ξυλοφάγος (xulophagos) "eating wood", from ξύλον (xulon) "wood" and φαγεῖν (phagein) "to eat". Animals feeding only on dead wood are called sapro-xylophagous ...
A rudimentary form of lithophone is the "rock gong", usually a natural rock formation opportunistically adapted to produce musical tones, such as that on Mfangano Island, in Lake Victoria, Kenya. The Gaval Dash in Gobustan State Historical and Cultural Reserve outside Baku , Azerbaijan is a natural stone that sounds like tambourine when struck ...
Brandon knappers made gun flints for export to Africa as late as the 1960s. Knapping for building purposes is still a skill that is practiced in the flint-bearing regions of southern England, such as Sussex , Suffolk, and Norfolk , and in northern France, especially Brittany and Normandy , where there is a resurgence of the craft due to ...
Mamelon – Rock formation created by eruption of relatively thick or stiff lava through a narrow vent; Mid-ocean ridge – Basaltic underwater mountain system formed by plate tectonic spreading; Pit crater – Depression formed by a sinking or collapse of the surface lying above a void or empty chamber
The log structure was made at least 476,000 years ago, while the wood tools are slightly younger, under 400,000 years old. That places the materials in a time before our species, Homo sapiens ...
Stone is more durable than wood, and carvings in stone last much longer than wooden artifacts. Stone comes in many varieties and artists have abundant choices in color, quality and relative hardness. Soft stone such as chalk , soapstone , pumice and Tufa can be easily carved with found items such as harder stone or in the case of chalk even the ...
Anthropic rock is rock that is made, modified and moved by humans. Concrete is the most widely known example of this. [ 1 ] The new category has been proposed to recognise that human-made rocks are likely to last for long periods of Earth's future geological time , and will be important in humanity's long-term future.
Wood is preserved from decomposition by rapid entombment in mud, particularly mud formed from volcanic ash. [7] The wood is then mineralized to transform it to stone. Non-mineralized wood has been recovered from Paleozoic formations, particularly Callixylon from Berea Sandstone, but this is very unusual. The petrified wood is later exposed by ...