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Geologic map of the Niger Delta Basin and the Benue trough, and the oil fields in the region. The Niger Delta Basin , also referred to as the Niger Delta province , is an extensional rift basin located in the Niger Delta and the Gulf of Guinea on the passive continental margin near the western coast of Nigeria [ 1 ] with suspected or proven ...
The Niger Delta Basin is an extensional rift basin where rifting occurred from the Late Jurassic to the Late Cretaceous.Cretaceous fracture zones, expressed as trenches and ridges, control the tectonic framework of the delta and separate the margin into individual sub-basins, which form the boundary faults of the Cretaceous Benue-Abakaliki trough.
The four countries most severely impacted by the 2004 Tsunami—Indonesia, Sri Lanka, India, and Thailand—saw a 28% reduction in their mangrove forests between 1980 and 2000. [80] It is also widely accepted that the destruction of mangroves and reefs intensified the devastation caused by the 2005 Hurricane Katrina in the coastal states of the ...
The Niger Delta is the delta of the Niger River sitting directly on the Gulf of Guinea on the Atlantic Ocean in Nigeria. [ 1 ] [ 2 ] It is located within nine coastal southern Nigerian states, which include: all six states from the South South geopolitical zone, one state ( Ondo ) from South West geopolitical zone and two states ( Abia and Imo ...
The Niger Delta is made up of various networks of rivers and creeks mostly distributaries of the Niger River. [8] The soils of the delta vary by the shifting rivers and creeks, with sand and loam marking the remains of old levees, water-logged heavy clay in the backswamps behind the levees, and silty loam and clay on the higher ground. [ 1 ]
More than 90% of Sri Lanka's surface lies on Precambrian strata, some of it dating back 2 billion years. [6] The granulite facies rocks of the Highland Series (gneisses, sillimanite-graphite gneisses, quartzite, marbles, and some charnockites) make up most of the island and the amphibolite facies gneisses, granites, and granitic gneisses of the Vijayan Series occur in the eastern and ...
The cartography of Sri Lanka is the history of the surveying and creation of maps of Sri Lanka. A list of maps of Sri Lanka in chronological order is shown below. Maps
Sri Lanka continental separated from the south eastern tip of peninsular India by the more than 20 m deep Palk Strait.There had been repeated land connections with India across this strait during successive glacial periods, the last being between 10,000 and 20,000 years ago when the sea level was about 120m below the present level creating a 140 km wide land bridge.