| Answer | Crossword Clue |
|---|---|
| EON | Section of geological history |
| province | area that exhibits essential continuity of geological history |
| convulsionist | a religious convulsionary; a believer in the importance of convulsions in geological history |
| convulsionists | CONVULSIONIST, a religious convulsionary; a believer in the importance of convulsions in geological history |
| ERAS | There are five in geological history. |
| catastrophism | The theory that changes in the earth's crust during geological history have resulted chiefly from sudden violent and unusual events |
