What is Dahomey basin?
What is Dahomey basin?
The Dahomey Basin is an amalgamation of inland/coastal/offshore basin that expanses from southeastern Ghana through Togo and the. Republic of Benin to southwestern Nigeria. It is separated from the Niger Delta by a subsurface basement high referred to as the Okitipupa Ridge.
How was the Niger delta formed?
The Niger Delta Basin was formed by a failed rift junction during the separation of the South American plate and the African plate, as the South Atlantic began to open. Also at this time syn-rift sands and then shales were deposited in the late Cretaceous. This indicates that the shoreline regressed during this time.
What are the sedimentary basins in Nigeria?
Nigeria is underlain by seven major sedimenta- ry basins, viz: (from the oldest), the Calabar Flank, the Benue Trough, the Chad Basin, SE lullem- menden (Sokoto) Basin, the Dahomey Basin, and the Niger Delta Basin. Sedimentary succes- sions in these basins are of middle Mesozoic to Recent age.
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.
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 …
Where is Dahomey basin located?
The Dahomey Basin is a combination of inland/coastal/offshore basin that stretches from southeastern Ghana through Togo and the Republic of Benin to southwestern Nigeria. It is separated from the Niger Delta by a subsurface basement high referred to as the Okitipupa Ridge.
Why is the Niger Delta important?
The Niger River and its Inner Delta are vital for agriculture, livestock, fisheries, transport, energy, tourism, and water filtration, as well as as a habitat for a range of fish and other aquatic animals, including a variety of protected species.
What is the cause of Niger Delta crisis?
A primary cause of this is the effect crude oil spills have on crops in the given area. According to a Stanford University article, Oil Pollution in the Niger Delta, there has been an estimation of 240,000 barrels of oil being spilled annually onto the Niger Delta region.
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.
How is a 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).
What is the geology of Anambra State?
Anambra Basin is a Cretaceous depo-centre that received Campanian to Tertiary sediments (Nwajide, 1990 and Obi, 2000). The stratigraphic setting of Southern Nigeria comprises sediments of three major sedimentary cycles.
How many basins do we have 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.