1. The field consists of two independent gas-bearing formations , Kangan and Upper Dalan. 2. The Tertiary-aged coal-bearing formations are made up of conglomerate, sandstone, and shale. 3. Under the surface alluvium, a series relatively impermeable sedimentary units cap the petroleum-bearing formation . 4. Byrd admits he's always on the lookout for fossil-bearing formations along roads and creeks. 5. High resistivity values may indicate a hydrocarbon bearing formation . 6. The coal bearing formations experienced the highest temperatures at the onset of the Alpide orogeny. 7. This belongs to the gold bearing formations . 8. Fuel oil for the railroad was highly desired, especially since there are very few coal-bearing formations in California. 9. The field consists of two independent gas-bearing formations , Kangan ( Triassic ) and Upper Dalan ( Permian ). 10. The main iron ore bearing formation is the middle Precambrian Trommald Formation, which belongs in the Animikie Group.
