| 11. | There just was not enough algae to create source rocks.
|
| 12. | Nugaal Valley Block has been identified as having reservoir, source rock and trap potential.
|
| 13. | The predominant source rock in the Zonguldak basin is coal.
|
| 14. | Following the Burgan Formation, the Mauddud Limestone Formation ( source Rock ) began forming.
|
| 15. | Buried source rocks beneath the deepest depocenters may be overmature.
|
| 16. | A good source rock for hydrocarbons can contain up to twenty percent organic carbon.
|
| 17. | The Cretaceous shale is also identified as the probable source rock for the Columbus basin.
|
| 18. | Other locally sourced rock used in tool production included jaspers for hammerstones and sandstone grinders.
|
| 19. | Many of the Phosphoria shales are rich in organic matter and are petroleum source rocks,
|
| 20. | To the west, calcareous source rock that was once marine, produces brown soil containing calcareous pebbles.
|
