Provides information about the geological history of earth
The age of an object in relation to the ages of other objects.
The numeric age of an object or event.
14c -combines with oxygen to form radioactive carbon dioxide
law of Superpostion
Principle that a sedimentary rock layer is older or younger.
A fossil thats used to esablish the age of a rock layer.
Law of crosscutting relationships
The principle that a fault or body of rock is younger than any other body of rock.
A method of dertermining the age of an object by combining the relative percentages of a radioactive parent isotope and a stable isotope.
original radioactive isotope
newly formed isotopes
The time required for half of a sample of a radioactive isotope.
a method of the absolute age of an object.
a light colored band of coarse particles and a dark band of fine particles.
Alpha particle(2 protons, 2 neutrons) emited by a nucleus.
fossilized mark that formed om sedimentary rock by the movement of an animal or within soft sediment.
most fossils are discovered in this rock
an example of how half-lives work with a specific sample
if you had 10g , you would have 5g, then 2.5g.