| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| Sandstone & shale are these rocks, one of 3 types found in the Earth's crust; they form when material accumulates at the surface | sedimentary | $800 | DJ | OUR CRUSTY EARTH | 2025-09-17 | #9393 | |
| Marble is classified as a metamorphic rock; before that it was limestone, a type of rock classified as this | sedimentary | $800 | DJ | DOWN TO EARTH | 2002-04-26 | #4075 | |
| Basalt is an igneous rock & rock salt is this type | sedimentary | $300 | J | THE EARTH | 1990-02-20 | #1267 |