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Ecofact

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Ecofact

In archaeology, a biofact (or ecofact) is an object, found at an archaeological site and carrying archaeological significance, but previously unhandled by humans. They are related to the natural environment, such as big horn sheep bones, charcoal, plants, and pollen.[1] Biofacts are natural objects found with artifacts or features.[2] Ecofacts reveal how ancient people responded to their surroundings.[2]

A common type of biofact is a plant seed. Plant remains, often referred to as macro botanicals, provide a variety of information ranging from diet to medicine to textile production.[3] Pollen preserved on archeological sites informs researchers about the ancient environment, and the foods processed and/or grown by prehistoric people.[3] Pollen, when examined over time, also informs on environmental and dietary changes.[3] A seed can be linked to the species of plant that produced it; if massive numbers of seeds of a cultivated species are found at a site, it may be inferred that the species may have been grown for food or other products that are useful to humans, such as clothing, bedding or building materials.

Another type of biofact is a wood. Wood is made up cellulose, carbohydrates, and lignin.[4] Every year that passes a new ring is added to the trunk of tree allowing for dendrochronological dating.[4] Charcoal is burned wood that archaeologist are able to extract.[5] It can be dated using carbon-14, and through other methods, information such as local environment and human adaptation can be revealed from the charcoal.[5] To help determine the date during which a site was occupied, Dendrochronological analysis can be used on wood samples.

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