SYNONYMS OR RELATED TERMS: chronometric dating; absolute dates; absolute chronology; absolute age determination (antonym: relative dating)CATEGORY: chronology; technique DEFINITION: The determination of age with reference to a specific time scale, such as a fixed calendrical system or in years before present (B.
This term refers to the relation of one stratigraphical unit to another, by petrological, osteological, lithographic, cultural, chronological, or palaeontological means.
For example, stratigraphic units may be correlated using palaeontological criteria, methods, and position relative to the glacial-interglacial cycle by examining physical and biological attributes.
Among the most useful chronometric dating techniques are radiocarbon dating, potassium argon dating, and thermoluminescence dating.
Dendrochronology, the relationship of dated ancient trees with live trees has no CATEGORY: technique DEFINITION: The use of various methods, often multiple methods, to demonstrate the equivalency of stratigraphic units.
You find something extraordinary and want to know as much about it as you can.
In this lesson, you'll learn how scientists determine the absolute age of materials.
In relative age dating, scientists study a material and compare it to other similar materials in order to establish a timeline.
It is essentially a big sequence: This comes first, that comes next, this comes last.
A range of methods for determining the absolute age of an object or material, for example using radiometric dating which measures the decay product produced by radioactive decay in minerals, or via dendrochronology.
Imagine braving the desert heat for days or even weeks as you dig for dinosaur bones.
Many new techniques are being developed and tested.