Geologic Time Vocab Words Crossword

A good relationship or connection between two or more things
Is the science of determining the relative order of past events, without determining their absolute age
The action or state of including or of being included within a group or structure
principle in physics, mathematics, and engineering.
A surface of contact between two groups of unconformable strata.
Any method of determining the age of earth materials or objects of organic origin based.
A fossil that is useful for dating and correlating the strata in which it is found
A fossil of a footprint, trail, burrow, or other trace of an animal rather than of the animal itself.
Is the true age of a rock or fossil
the theory that changes in the earth's crust during geological history have resulted from the action of continuous and uniform processes.
The time taken for the radioactivity of a specified isotope to fall to half its original value.