What are the sedimentary basins in Nigeria?
… of Nigeria (Figure 2) and these are located in a number of sedimentary basins, comprising the Benue (central), Sokoto (north-west border), Chad (north-east), Bida (central, along the Niger valley), Dahomey (south- west) and Anambra (south-east) Basins and the Niger delta (south coastal).
How many basins are in Nigeria?
In Nigeria there are eight main river basins, i.e. the Benue, Delta and Cross Rivers, the Imo-Anambra, Hadejia-Chad, Sokoto-Rima, Niger, Owena and Ogun, and Osun Basins.
What are the types of sedimentary basins?
| Types of sedimentary basins | |
|---|---|
| Rift-related basins | |
| Basin type | Geological Origin |
| Rift basin | The down-dropped basin formed during rifting because of stretching and thinning of the continental crust |
| Passive margin basin | Subsidence along a passive margin, mostly due to long-term accumulation of sediments on the continental shelf |
How is the sedimentary basin formed?
Sedimentary basins are formed over hundreds of millions of years by the combined action of deposition of eroded material and precipitation of chemicals and organic debris within water environment (Figure 1.2).
Which is the deepest sedimentary basin?
Sedimentary basins are regions of the Earth’s crust dominated by subsidence. The deepest basins (>15 km) are found in the southern Caspian Sea and in the western Gulf of Mexico. Sedimentary rocks are important because they are the “tape recorder” of past climate, sea-level and environmental change.
Where is Benue Trough in Nigeria?
The Benue Trough is a major geological structure underlying a large part of Nigeria and extending about 1,000 km northeast from the Bight of Benin to Lake Chad. It is part of the broader West and Central African Rift System.
What are the frontier basins in Nigeria?
The Frontier Basins include the Lake Chad, Gongola, Anambra, Sokoto, Dahomey and Bida basins and the Benue Trough, all primarily situated in Nigeria’s north.
How many sedimentary basins are there in the world?
Sedimentary basins have been well documented for many years, but their boundaries are often inadequately represented. This study delineated 764 basins using global geologic datasets to create more consistent basin outlines that can be utilized to conduct future global studies.
How many sedimentary basins are there in Nigeria?
three sedimentary basins
The three sedimentary basins in Nigeria are underlain by continental crust except in the Niger delta, where the basement rock is interpreted to be oceanic crust.
What is the largest sedimentary basin on earth?
The deepest basins (>15 km) are found in the southern Caspian Sea and in the western Gulf of Mexico. Sedimentary rocks are important because they are the “tape recorder” of past climate, sea-level and environmental change. They are also the world’s largest repositories of oil and gas.
Where is Bida Basin located?
The Bida Basin is a NW-SE trending intracratonic basin that extends northwestwards from the confluence of the Niger and Benue Rivers at the Lokoja/Dekina axis to the basement complex that separates it from the basal continental early Cretaceous to late Jurassic Illo and Gundumi Formations (Kogbe, 1989) of the Sokoto …