柱廊
发表于 2025-4-1 02:44:03
Mesozoic to Tertiary basins — inland basins this phase did not begin to accumulate to any significant extent until the later Jurassic and Lower Cretaceous..A major marine transgression in the Upper Cretaceous filled large shallow basins in the non-cratonic (Pan African) areas of the continental interior. Sea level fluctuated and shorelines a
Confidential
发表于 2025-4-1 08:09:40
The Benue Trough and coastal basinsbably by later adjustments along faults in the underlying basement. The Bida Basin is a shallow unfaulted arm of the Benue Trough. The Benue Trough probably provided the major link between the Mediterranean (Tethys Ocean) and Gulf of Guinea via the lullmedden and Chad Basins, during Upper Cretaceous
Bother
发表于 2025-4-1 10:57:00
Economic potential of the younger sedimentary basinsces they contain. These are dominated by petroleum, but include also coal and uranium. There are large deposits of phosphate, an essential fertiliser mineral, and a host of industrial raw materials, including limestone for cement manufacture, kaolinitic clays, gypsum and salt. Metalliferous deposits