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Doba Basin
The Doba Basin is a sedimentary basin located in Chad and is part of the Central African rift system. This basin contains up to 10 km of non-marine sediments which record the complex tectonic and climatic evolution of the region from the Early Cretaceous Period to the present. These basins were originally identified using gravity data, but three decades of subsequent exploration activity has significantly increased understanding of the basins evolution. Interpretations differ significantly from earlier models that invoke widespread misinformation. The basins were sites of extension on a trans-African shear zone beginning in the Neocomian. The basin is used in a joint development venture between ExxonMobil, Petronas Petroliam Nasional Berhad (National Petroleum Limited), commonly known as Petronas, is a Malaysian oil and gas company. Established in 1974 and wholly owned by the Government of Malaysia, the corporation is vested with all oil and gas reso ... and Chevron- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doba Basin
The Doba Basin is a sedimentary basin located in Chad and is part of the Central African rift system. This basin contains up to 10 km of non-marine sediments which record the complex tectonic and climatic evolution of the region from the Early Cretaceous Period to the present. These basins were originally identified using gravity data, but three decades of subsequent exploration activity has significantly increased understanding of the basins evolution. Interpretations differ significantly from earlier models that invoke widespread misinformation. The basins were sites of extension on a trans-African shear zone beginning in the Neocomian. The basin is used in a joint development venture between ExxonMobil, Petronas Petroliam Nasional Berhad (National Petroleum Limited), commonly known as Petronas, is a Malaysian oil and gas company. Established in 1974 and wholly owned by the Government of Malaysia, the corporation is vested with all oil and gas reso ... and Chevron- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sedimentary Basin
Sedimentary basins are region-scale depressions of the Earth's crust where subsidence has occurred and a thick sequence of sediments have accumulated to form a large three-dimensional body of sedimentary rock. They form when long-term subsidence creates a regional depression that provides Accommodation (geology), accommodation space for accumulation of sediments. Over millions or tens or hundreds of millions of years the deposition of sediment, primarily gravity-driven transportation of water-borne eroded material, acts to fill the depression. As the sediments are buried, they are subject to increasing pressure and begin the processes of compaction (geology), compaction and lithification that transform them into sedimentary rock. Sedimentary basins are created by deformation of Earth's lithosphere in diverse geological settings, usually as a result of plate tectonics, plate tectonic activity. Mechanisms of crustal deformation that lead to subsidence and sedimentary basin formati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chad
Chad (; ar, تشاد , ; french: Tchad, ), officially the Republic of Chad, '; ) is a landlocked country at the crossroads of North and Central Africa. It is bordered by Libya to the north, Sudan to the east, the Central African Republic to the south, Cameroon to the southwest, Nigeria to the southwest (at Lake Chad), and Niger to the west. Chad has a population of 16 million, of which 1.6 million live in the capital and largest city of N'Djamena. Chad has several regions: a desert zone in the north, an arid Sahelian belt in the centre and a more fertile Sudanian Savanna zone in the south. Lake Chad, after which the country is named, is the second-largest wetland in Africa. Chad's official languages are Arabic and French. It is home to over 200 different ethnic and linguistic groups. Islam (55.1%) and Christianity (41.1%) are the main religions practiced in Chad. Beginning in the 7th millennium BC, human populations moved into the Chadian basin in great numbe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rift System
In geology, a rift is a linear zone where the lithosphere is being pulled apart and is an example of extensional tectonics. Typical rift features are a central linear downfaulted depression, called a graben, or more commonly a half-graben with normal faulting and rift-flank uplifts mainly on one side. Where rifts remain above sea level they form a rift valley, which may be filled by water forming a rift lake. The axis of the rift area may contain volcanic rocks, and active volcanism is a part of many, but not all, active rift systems. Major rifts occur along the central axis of most mid-ocean ridges, where new oceanic crust and lithosphere is created along a divergent boundary between two tectonic plates. ''Failed rifts'' are the result of continental rifting that failed to continue to the point of break-up. Typically the transition from rifting to spreading develops at a triple junction where three converging rifts meet over a hotspot. Two of these evolve to the point of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early Cretaceous
The Early Cretaceous (geochronological name) or the Lower Cretaceous (chronostratigraphic name) is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 145 Ma to 100.5 Ma. Geology Proposals for the exact age of the Barremian–Aptian boundary ranged from 126 to 117 Ma until recently (as of 2019), but based on drillholes in Svalbard the defining early Aptian Oceanic Anoxic Event 1a (OAE1a) was carbon isotope dated to 123.1±0.3 Ma, limiting the possible range for the boundary to c. 122–121 Ma. There is a possible link between this anoxic event and a series of Early Cretaceous large igneous provinces (LIP). The Ontong Java- Manihiki- Hikurangi large igneous province, emplaced in the South Pacific at c. 120 Ma, is by far the largest LIP in Earth's history. The Ontong Java Plateau today covers an area of 1,860,000 km2. In the Indian Ocean another LIP began to form at c. 120 Ma, the Ker ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shear Zone
In geology, a shear zone is a thin zone within the Earth's crust or upper mantle that has been strongly deformed, due to the walls of rock on either side of the zone slipping past each other. In the upper crust, where rock is brittle, the shear zone takes the form of a fracture called a Fault (geology), fault. In the lower crust and mantle, the extreme conditions of pressure and temperature make the rock ductile. That is, the rock is capable of slowly deforming without fracture, like hot metal being worked by a blacksmith. Here the shear zone is a wider zone, in which the ductile rock has slowly flowed to accommodate the relative motion of the rock walls on either side. Because shear zones are found across a wide depth-range, a great variety of different rock types with their characteristic structures are associated with shear zones. General introduction A shear zone is a zone of strong deformation (with a high strain rate) surrounded by rocks with a lower state of Deforma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neocomian
In geology, Neocomian was a name given to the lowest stage of the Cretaceous system. It is generally considered to encompass the interval now covered by the Berriasian, Valanginian and Hauterivian, from approximately 145 to 130 Ma. It was introduced by Jules Thurmann in 1835 on account of the development of these rocks at Neuchâtel (Neocomum), Switzerland. It has been employed in more than one sense. In the type area the rocks have been divided into two sub-stages, a lower, Valanginian (from Valengin, Pierre Jean Édouard Desor, 1854) and an upper, Hauterivian (from Hauterive, Eugène Renevier, 1874); there is also another local sub-stage, the infra-Valanginian or Berriasian (from Berrias, Henri Coquand, 1876). These three sub-stages constitute the Neocomian in its restricted sense. Adolf von Koenen and other German geologists extend the use of the term to include the whole of the Lower Cretaceous up to the top of the Gault or Albian. Eugène Renevier Eugène Renevier (26 March ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ExxonMobil
ExxonMobil Corporation (commonly shortened to Exxon) is an American multinational oil and gas corporation headquartered in Irving, Texas. It is the largest direct descendant of John D. Rockefeller's Standard Oil, and was formed on November 30, 1999, by the merger of Exxon and Mobil, both of which are used as retail brands, alongside Esso, for fueling stations and downstream products today. The company is vertically integrated across the entire oil and gas industry, and within it is also a chemicals division which produces plastic, synthetic rubber, and other chemical products. ExxonMobil is incorporated in New Jersey. ExxonMobil's earliest corporate ancestor was Vacuum Oil Company, though Standard Oil is its largest ancestor prior to its breakup. The entity today known as ExxonMobil grew out of the Standard Oil Company of New Jersey (or Jersey Standard for short), the corporate entity which effectively controlled all of Standard Oil prior to its breakup. Jersey Standard grew a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petronas
Petroliam Nasional Berhad (National Petroleum Limited), commonly known as Petronas, is a Malaysian oil and gas company. Established in 1974 and wholly owned by the Government of Malaysia, the corporation is vested with all oil and gas resources in Malaysia and is entrusted with the responsibility of developing and adding value to these resources. In the 2017 Forbes Global 2000, Petronas Gas was ranked at 1881st. Petronas also ranked 48th globally in the 2020 Bentley Infrastructure 500. Since its incorporation, Petronas has grown to be an integrated international oil and gas company with business interests in 35 countries. As of the end of March 2005, the Group comprised 103 wholly owned subsidiaries, 19 partly owned outfits and 57 associated companies. The Financial Times has identified Petronas as one of the " new seven sisters": [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chevron Texaco
Chevron Corporation is an American multinational List of oil exploration and production companies, energy corporation. The second-largest Successors of Standard Oil, direct descendant of Standard Oil, and originally known as the Standard Oil Company of California (shortened to Socal or CalSo), it is headquartered in San Ramon, California, and active in more than 180 countries. Chevron is engaged in every aspect of the Petroleum, oil and natural gas industries, including hydrocarbon exploration and Petroleum#Extraction, production; refining, marketing and transport; chemicals manufacturing and sales; and power generation. Chevron traces its history back to the 1870s. The company grew quickly after the Standard Oil Co. of New Jersey v. United States, breakup of Standard Oil by acquiring companies and partnering with others, especially Texaco. Socal was one of the Seven Sisters that dominated the global petroleum industry from the mid-1940s to the 1970s. In 1985, Socal merged with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rift Basins
In geology, a rift is a linear zone where the lithosphere is being pulled apart and is an example of extensional tectonics. Typical rift features are a central linear downfaulted depression, called a graben, or more commonly a half-graben with normal faulting and rift-flank uplifts mainly on one side. Where rifts remain above sea level they form a rift valley, which may be filled by water forming a rift lake. The axis of the rift area may contain volcanic rocks, and active volcanism is a part of many, but not all, active rift systems. Major rifts occur along the central axis of most mid-ocean ridges, where new oceanic crust and lithosphere is created along a divergent boundary between two tectonic plates. ''Failed rifts'' are the result of continental rifting that failed to continue to the point of break-up. Typically the transition from rifting to spreading develops at a triple junction where three converging rifts meet over a hotspot. Two of these evolve to the point of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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