Pictures of radiocarbon dating
His radiocarbon dating technique is the most important development in absolute dating in archaeology and remains the main tool for dating the past 50,000 years.
How It Works: Carbon has 3 isotopic forms: Carbon-12, Carbon-13, and Carbon-14.
Although relative dating can work well in certain areas, several problems arise.
Rodents, for example, can create havoc in a site by moving items from one context to another.
The extra neutrons in Carbon-14’s case make it radioactive (thus the term, radiocarbon).We know that ancestors of Native Americans were the first people to inhabit Montana, and we have a fair understanding of which tribes lived here, and how they lived over the past 150-200 years. Stories, artifacts, trails, tipi rings, and rock art all offer glimpses into the lives of pre-historic Native American cultures.White settlers, explorers, soldiers, and journalists wrote about this era, and oral accounts were passed down over generations among Indian people. Another tremendous source of evidence are the numerous bison kill sites scattered throughout the region.If the ratio is 1:3, then two half-lives have gone by .