Thermoluminescence: It determines the period during which certain object was last subjected to heat.It is based on the concept that heated objects absorb light, and emit electrons. A Venn diagram depicts both dating methods as two individual sets.
Relative techniques are of great help in such types of sediments.➤ It determines if an object/event is younger or older than another object/event from history.➤ Relative dating is qualitative.➤ This technique helps determine the relative age of the remains.➤ It is less specific than absolute dating.➤ Relative dating is comparatively less expensive and time-efficient.➤ It works best for sedimentary rocks having layered arrangement of sediments.The following are the major methods of relative dating.Biostratigraphy: An extended version of stratigraphy where the faunal deposits are used to establish dating.Faunal deposits include remains and fossils of dead animals.Many of these organisms have left their remains as fossils in sedimentary rocks.
Geologists have studied the order in which fossils appeared and disappeared through time and rocks. Fossils can help to match rocks of the same age, even when you find those rocks a long way apart.Radiometric dating: This technique solely depends on the traces of radioactive isotopes found in fossils.The rate of decay of these elements helps determine their age, and in turn the age of the rocks.When we observe the intersection in this diagram depicting these two dating techniques, we can conclude that they both have two things in common:1.Provide an idea of the sequence in which events have occurred.2.Our planet inherits a large number of artifacts and monuments bestowed upon us by older historic civilizations.