Dating archaeology ppt

Posted by / 27-Jun-2019 17:11

Dating archaeology ppt

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Relative techniques can determine the sequence of events but not the precise date of an event, making these methods unreliable.

b) Absolute These methods are based on calculating the date of artefacts in a more precise way using different attributes of materials.

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This process frees energy in the form of light, which can be measured.

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Based on a discipline of geology called stratigraphy, rock layers are used to decipher the sequence of historical geological events.

It is the only method that can be used to date rocks, pottery and minerals for dates that are approximately between 300 to 10,000 years old.

This method is based on the fact that when a material is heated or exposed to sunlight, electrons are released and some of them are trapped inside the item.

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This isotope, which can be found in organic materials and can be used only to date organic materials, has been incorrectly used by many to make dating assumptions for non-organic material such as stone buildings.

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