Classification of sedimentary 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 are sedimentary basins classified?
Sedimentary basins are classified by tectonic (and, specifically, plate-tectonic) setting. That’s fairly easy to do for modern basins, but it’s rather difficult to do for ancient basins.
What is basin classification?
Beaumont and Tankard (1987) classified basins into five categories: extensional, transtensional, transpressional, foreland, and cratonic basins.
What are the 3 types of basins?
The major types of basins are river drainage basins, structural basins, and ocean basins.
What is a sedimentary basin in geology?
A sedimentary basin is an area of the earth’s crust that is underlain by a thick sequence of sedimentary rocks. Hydrocarbons commonly occur in sedimentary basins and are absent from intervening areas of igneous and metamorphic rocks (North, 1971).
How many sedimentary basins are there in the world?
A global sedimentary basin map was constructed with 764 basins. Many sedimentary basins formed during the Proterozoic-Cambrian and Mesozoic.
How are Intracratonic basins formed?
The Tagus Basin is an intracratonic basin that was formed as a result of differential tectonic strains within the Iberian microplate during the Alpine orogeny.
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. Most of the wells that penetrated the basement are in the Eastern Dahomey embayment of western Nigeria.
How many sedimentary basins have been determined to be suitable for co2 storage?
The results suggest that four sedimentary basins identified in this study have prospectivity to reduce GHG emissions of Kazakhstan significantly and thus enable the decarbonization of national economy to achieve the goals set by the Paris Agreement.
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 three 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 sedimentary basins are there in India?
26 sedimentary basins
India has 26 sedimentary basins covering an area of 3.14 million square kilometres. The sedimentary basins of India, onland and offshore up to the 200m isobath, have an areal extent of about 1.79 million sq. km.
What is basement complex in Nigeria?
Generally, the basement complex of Nigeria is grouped into three lithological units: the migmatite-gneiss-quartzite complex, the metasedimentary schist belts and the older granite. The basement complex rocks in Bajabure belong to the older granite suite.
How was Anambra basin formed?
Santonian age marked the stage when the basin experienced another phase of tectonic event that involved deformation, folding, faulting andupliftofthe Pre-Santoniansediments leading to the formation of Anambra Basin which evolved as a depression to the west of the uplift (Benkhelil, 1987).
What types of tectonic conditions are required to create basins?
What types of tectonic conditions are required to create basins? Sediments can only form in special regions where the surface of the Earth’s lithosphere sinks, providing space in which sediments collects. Subsidence is the term used to refer to the process by which the surface sinks.
Where is Bida basin located?
Niger State
The Bida Basin is a NW-SE trending intracratonic structure extending from Kontagora in Niger State in the north to the area slightly beyond Lokoja in the south (Figure. 3) It is delimited in the NE and SW by the basement complex and merges with the Anambra and Sokoto Basins to the SE and NW respectively (Figure.
What is the age of Anambra Basin?
The age ranges from Lower to Middle Maastrichtian from south to north, and is accompanied by both vertical and lateral facies changes ( Ladipo et al., 1992). The thickness of the formation varies across the basin, ranging from 100 m to over 1000 m (Fig.
How was 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. Rifting in this basin started in the late Jurassic and ended in the mid Cretaceous.
When was Anambra separated from Enugu?
1991
Anambra state was first formed in 1976 from the northern half of East-Central state, and in 1991 it was considerably reduced in area by an administrative reorganization that created the new state of Enugu.
Is coal found in Anambra?
The study has clearly identified that coal deposits in the Anambra Basin, sub-bituminous in rank, are suitable for combustion and electricity generation, while those of bituminous rank in the Middle Benue Trough have limited coking potential.
Is Anambra in Niger Delta?
The Anambra Basin and the Abakaliki Trough to the north, the Cameroun volcanic line to the east, the Dahomey embayment to the west and the Gulf of Guinea to the south define the boundaries 15 of the Niger Delta.