relative dating is the science of determining the relative order of past events ie the age of an object in comparison to another without necessarily determining their absolute age ie estimated agein geology rock or superficial deposits fossils and lithologies can be used to correlate one stratigraphic column with another prior to the discovery of radiometric dating.
Using fossils to correlate strata so how exactly is an index fossil used for relative dating of rocks well lets go back to our surveyor william smith.
Procedure a using cross sections 1 and 2 determine the sequence of events and order them from oldest to most recent on the report sheet in addition to determining the relative age of the different strata.
relative dating utilizes six fundamental principles to determine the relative age of a formation or event the first principle is the principle of superposition which states that in an undisturbed succession of sedimentary rock the oldest layers are on the bottomthis follows due to the fact that sedimentary rock is produced from the gradual.
stratigraphy is a branch of geology concerned with the study of rock layers and layering stratificationit is primarily used in the study of sedimentary and layered volcanic rocksstratigraphy has two related subfields lithostratigraphy lithologic stratigraphy and biostratigraphy biologic stratigraphy.
Students learn about the development of the geologic time scale the major time periods in earths history and the role fossils play in this history.
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Chapter 2 basic geologic principles the science of geology is founded on basic principles that are useful for making observations about the world around us.
history of the earth the silent history of our world a detective story homework relative time moon craters relative time ages.