| 1 | Modern Paris sits atop massive formations of limestone and gypsum. | |
| 2 | Malta' s major resources are limestone, a favourable geographic location, and a productive labour force. | |
| 3 | The rock was limestone and the main place that we climbed at was called the "Great Arch. | |
| 4 | "There may be limestone thousands of meters beneath the city, but not hundreds of meters, " he said. | |
| 5 | The white cliffs of Dover, for example, are white because they contain limestone, or calcium carbonate. |