This concept enables archaeologists to characterize and date strata within sites using distinctive artifact forms that research shows to be diagnostic of a particular period of time(p.
118): A date expressed as a specific unit of scientific measurement, such as days, years, centuries, or millennia; an absolute determination attempting to pinpoint a discrete, known interval in time.
121): A fluvial process through which stones in a stream- or riverbed come to rest overlapping like shingles on a roof, with their upstream ends lying slightly lower in elevation than their downstream ends. 97): The geological principle stating that, in any pile of sedimentary rocks that have not been disturbed by folding or overturning, each bed is older than the layers above and younger than the layers below; also known as Steno’s law.(p.
107): The result when one sediment is unearthed by human or natural actions and moved elsewhere, whereby the latest material will be deposited on the bottom of the new sediment, and progressively earlier material will be deposited higher and higher in the stratigraphy.optically stimulated luminescence (OSL), and electron spin resonance (ESR)—date ceramicsenamel, respectively.
A method of radiocarbon dating that counts the proportion of carbon isotopes directly (rather than using the indirect Geiger counter method), thereby dramatically reducing the quantity of datable material required.(p.
134): A device to measure the amount of gamma radiation emitted by sediments.