Example of relative dating methods Free 4 camesex

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Fluoride ions are present in trace amounts in most soils and groundwaters.Over time, buried bones pick up fluoride ions from soil moisture or exposure to groundwater.

Bones are primarily composed of the mineral calcium hydroxy apatite.Cultural seriations are based on typologies, in which artifacts that are numerous across a wide variety of sites and over time, like pottery or stone tools.If archaeologists know how pottery styles, glazes, and techniques have changed over time they can date sites based on the ratio of different kinds of pottery.These strata are often most visible in canyons or gorges which are good sites to find and identify fossils.Understanding the geologic history of an area and the different strata is important to interpreting and understanding archaeological findings.The most common relative dating method is stratigraphy.

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