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TermDefinition
index fossils a fossil that is useful for dating and correlating the strata in which it is found.
lithosphere the rigid outer part of the earth, consisting of the crust and upper mantle.
extinction the state or process of a species, family, or larger group being or becoming extinct.
law of superposition law of geochronology, stating that in any undisturbed sequence of rocks deposited in layers
uncornformities a surface of contact between two groups of unconformable strata.
divergent tending to be different or develop in different directions.
convergent coming closer together, especially in characteristics or ideas.
transform make a thorough or dramatic change in the form, appearance, or character of.
faults an unattractive or unsatisfactory feature, especially in a piece of work or in a person's character.
plate tectonics a theory explaining the structure of the earth's crust and many associated phenomena as resulting from the interaction of rigid lithosphere plates that move slowly over the underlying mantle.
continental drift is the age of a geologic formation in years. Unlike relative age, which determines whether a formation is older or younger than its surrounding formations,
absolute age is the age of a geologic formation in years. Unlike relative age, which determines whether a formation is older or younger than its surrounding formations,
relative age dating is the science of determining the relative order of past events
half-life the time taken for the radioactivity of a specified isotope to fall to half its original value.
Created by: conhar9896
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