My Crossword Maker Logo
Powered by BrightSprout
Save Status:
or to save your progress. The page will not refresh.
Controls:
SPACEBAR SWITCHES TYPING DIRECTION
Answer Key:
Edit a Copy:
Make Your Own:
Crucigrama Sopa de Letras Hoja de Trabajo
Calificar este Puzzle:
Log in or sign up to rate this puzzle.

Geologic Time Crossword Puzzle

Horizontales
What is used to separate one layer from another.
Dating focused on fossils that are used to detect a particular era of time or radioactive decay of specific isotopes.
A interval of time
It states that in unreformed stratigraphic sequences, the oldest strata will be at the bottom of the sequence.
A planar fracture or discontinuing of in a large volume of rock.
Before the Earth spilt up, it had a name. What was the name of our giant continent before the movement of plates destroyed it.
Verticales
The dating using the relative or estimate age of the fossil, or the theory on how old it is based on common knowledge.
The observing of, or researching of Strata.
The remains of an organism found in layers of sedimentary rock.
The destruction of many species at once, or over a small period of time. e.g. The Dinosaurs