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2.4 describe relative dating techniques using fossil sequence in strata
describe relative dating techniques using fossil sequence in strata
- If a fossil is lower in the rock layers then it is said to be older than more recent fossils found in higher strata. For example, if a fossil such as a trilobite is known to be 375 million years old and other fossils are found in the same layer then the second fossils can be dated the same as the trilobite. If the same trilobite is found in another location then the fossils found with it can be dated as the same age. If a fossil is found lower down in the sediments than it is older the fossil trilobite.
Model stratigraphic methods
University of California Berkeley, USA.