| GRANITIC | Acknowledge a lot of rocks, including one of the heaviest rocks (8) |
| IRON | Metal "Fe" with compounds causing many of the colours observed in rocks, including haematite, a key source of its ores (4) |
| THEIR | The Conservatives possibly including 'one of them' (5) |
| DRAUGHT | Vexed remark including one of disgust in cold blast (7) |
| SMITH | Founder of stratigraphy whose colour-coded map of geological strata represents rock including blue lias, red marl and forest marble (5) |
| STONY | Like some mountains with a lot of rocks |
| RUNIC | Like Viking characters, hurry by a lot of rocks |
| ASTATINE | A radioactive element, the heaviest in the halogen group (8) |
| ANACONDA | What is the heaviest snake in the world? (8) |
| OSMIUM | Metal of the platinum group, one of the heaviest substances known (6) |
| ALLIGATORSNAPPER | One of the heaviest freshwater turtles, found primarily in the south-east US (9,7) |
| OTUS | Genus to which one of the heaviest flying birds, the great bustard, belongs (4) |
| BUSTARD | One of the heaviest flying birds, extinct in Britain from 1832 until 2004 (7) |
| GREAT | One of the heaviest flying birds, extinct in Britain from 1832 until 2004 (5) |
| TITANOSAUR | Member of a diverse group of dinosaurs that includes some of the heaviest creatures ever to walk the earth, such as Argentinosaurus and Paralititan |
| BOURDON | The heaviest bell of a carillon; the drone of a bagpipe; or, derived from a French word meaning "bumblebee" or "buzz", a 16-foot stopped-flute in a pipe organ (7) |
| SHAKIRA | Singer of a lot of rock, as well as Gershwin (7) |
| GRAVEL | Lots of rocks in a parking lot |
| AT | A highly unstable radioactive element (the heaviest of the halogen series) |
| EIDER | With a call said by some to sound like Frankie Howerd, the heaviest and fastest flying species of duck in the UK (5) |
