| HADEAN | Unofficial eon characterized by Earth's formation from dust and rock through the emergence of its atmosphere and oceans. |
| SMYTH | Composer of The March of the Women suffrage anthem jailed for throwing a rock through a window of the Houses of Parliament (5) |
| ASHORE | Dust and rock on the beach? (6) |
| EONS | There have been four since Earth's formation |
| JEEPERSCREEPERS | My American off-road vehicle about to go over loose rocks through sierra (7,8) |
| PERMIAN | The largest extinction in Earth's history took place during this time, which lasted from about 299 million to about 252 million years ago and set the stage for the emergence of the dinosaurs. |
| OBORNE | Peter __, journalist and author of The Assault on Truth: Boris Johnson, Donald Trump and the Emergence of a New Moral Barbarism (6) |
| BURST | 'Bud ___' is the emergence of new leaves on a plant at the beginning of each growing season (5) |
| INCUBATION | ___ period measures the time between exposure to a disease and the emergence of symptoms |
| PLEISTOCENE | An epoch of ice ages that saw the emergence of woolly mammoth, woolly rhinoceros, musk ox, moose, and reindeer. |
| CASSETTES | Victims of the emergence of CDs and DVDs (9) |
| IRONAGE | Archeological period associated with the emergence of ferrous metallurgy (4,3) |
| OUTCOME | The emergence of, as a result (7) |
| SUNBURST | A sudden emergence of "Sol" from behind the clouds; or, a brooch, jewel, motif or ornament resembling said "daystar" and its rays (8) |
| WOODLANDPERIOD | Prehistoric time in canada noted for the emergence of pottery: 2 wds. |
| LEONIDS | Meteor shower peaking annually around November 17-18, caused by Earth crossing the path of a dust trail left behind by the comet Tempel-Tuttle (7) |
| LEONID | A meteor of a swarm peaking in November caused by Earth crossing the path of a dust trail left behind by comet Tempel-Tuttle (6) |
| GOGGLES | Large spectacles with shields around the rims for protecting the eyes from dust, wind, excessive light, etc. |
| WATER | This "vapor" is the most potent of the greenhouse gases in Earth's atmosphere, whose concentration is set by Earth's air temperatures. |
| ERIE | Emergence of Excalibur initially from mysterious lake |
