Relative Age Dating test Flashcards
(14 cards)
What does Uniformitarianism mean?
The processes on earth that happened thousands of years ago are still happening today.
What is Absolute Age Dating?
The age of the rock from when it was formed
What is Relative Age Dating?
This is the age of the rock compared to all the other rocks around it
What is Superposition?
Older rock layars on the bottem and younger rock layers on the top
What is the meaning of Original Hoizontality?
Rock layars form hoizontailty, rock layars are layed down flat
What is the meaning of Unconformities? and how are they formed?
A gap in the geological record, They are formed whenever layars were not depostied for a time
What is a Inclusions?
Rock fragment (clasts or xenoliths) are enclosed by younger rock
What is the principle that we use to determine what has happened in our Earth’s past?
Uniformitarianism
What principle states the exact age in the numerical form of a geologic feature?
Absolute age dating
What is a half life?
The amout of time it take for half of the radioactive materal to dissapear.
What is the meaning of Fault?
This is a crack in the earth because of tecktonic plates
What principle states the deeper layers are older and the layers closer to the surface are younger?
Superposition
A break in the Earth’s crust is called?
Faults
What is the sequence age of a rock compared to the ages of rock layers?
Relatives age dating
