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Taoudenni Basin
The Taoudeni Basin is a major Sedimentary basin in West Africa, named after the Taoudenni village in northern Mali. It covers large parts of the West African craton in Mauritania and Mali. It is of considerable interest due to its possible reserves of oil. In addition to its economic importance, the basin contains scientifically important fossils from the Late Mesoproterozoic and Early Neoproterozoic eras, which correspond to a time interval known as the Boring Billion. Description The Taoudeni is the largest sedimentary basin in Northwest Africa, formed during the Middle to Late Proterozoic. It continued to subside until the Middle Paleozoic, when Hercynian deformation and uplift occurred. It contains up to of Late Precambrian and Paleozoic sediments. Exploratory drilling since the 1980s has found indications of petroleum in the Late Precambrian, Silurian and Late Devonian formations. Sediments are thicker in the western half of the basin. Petroleum geology The govern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taoudeni Basin Map
Taoudenni (also Taoudeni, Taoudénit, Taudeni, , ) is a remote salt mining center in the desert region of northern Mali, north of Timbuktu. It is the capital of Taoudénit Region. The salt is dug by hand from the bed of an ancient salt lake, cut into slabs, and transported either by truck or by camel to Timbuktu. The Camel train, camel caravans (azalai) from Taoudenni are some of the last that still operate in the Sahara Desert. In the late 1960s, during the regime of Moussa Traoré, a prison was built at the site and the inmates were forced to work in the mines. The prison was closed in 1988. Salt mining The earliest mention of Taoudenni is by al-Sadi, in his ''Tarikh al-Sudan'', who wrote that in 1586 when Moroccan forces attacked the salt mining center of Taghaza (150 km north west of Taoudenni) some of the miners moved to 'Tawdani'. In 1906, the French soldier Édouard Cortier visited Taoudenni with a unit of the camel corps (méharistes) and published the first descrip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Devonian
The Devonian ( ) is a period (geology), geologic period and system (stratigraphy), system of the Paleozoic era (geology), era during the Phanerozoic eon (geology), eon, spanning 60.3 million years from the end of the preceding Silurian period at million years ago (Megaannum, Ma), to the beginning of the succeeding Carboniferous period at Ma. It is the fourth period of both the Paleozoic and the Phanerozoic. It is named after Devon, South West England, where rocks from this period were first studied. The first significant evolutionary radiation of history of life#Colonization of land, life on land occurred during the Devonian, as free-spore, sporing land plants (pteridophytes) began to spread across dry land, forming extensive coal forests which covered the continents. By the middle of the Devonian, several groups of vascular plants had evolved leaf, leaves and true roots, and by the end of the period the first seed-bearing plants (Pteridospermatophyta, pteridospermatophyt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landforms Of Mauritania
A landform is a land feature on the solid surface of the Earth or other planetary body. They may be natural or may be anthropogenic (caused or influenced by human activity). Landforms together make up a given terrain, and their arrangement in the landscape is known as topography. Landforms include hills, mountains, canyons, and valleys, as well as shoreline features such as bays, peninsulas, and seas, including submerged features such as mid-ocean ridges, volcanoes, and the great oceanic basins. Physical characteristics Landforms are categorized by characteristic physical attributes such as elevation, slope, orientation, structure stratum, stratification, rock exposure, and soil type. Gross physical features or landforms include intuitive elements such as berms, cliffs, hills, mounds, peninsulas, ridges, rivers, valleys, volcanoes, and numerous other structural and size-scaled (e.g. ponds vs. lakes, hills vs. mountains) elements including various kinds of inland and oceanic b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geology Of Mauritania
The geology of Mauritania is built on more than two billion year old Archean crystalline basement rock in the Reguibat Shield of the West African Craton, a section of ancient and stable continental crust. Mobile belts and the large Taoudeni Basin formed and filled with sediments in the connection with the Pan-African orogeny mountain building event 600 million years ago and a subsequent orogeny created the Mauritanide Belt. In the last 251 million years, Mauritania has accumulated additional sedimentary rocks during periods of marine transgression and sea level retreat. The arid country is 50% covered in sand dunes and has extensive mineral resources, although iron plays the most important role in the economy. Stratigraphy, tectonics and geologic history The oldest rocks in Mauritania date to the Archean, over two billion years old in the Reguibat Shield of the West African Craton. The extremely old crystalline basement rock of the shield is almost entirely Neoarchean age and me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geology Of Mali
Mali is a landlocked nation in West Africa, located southwest of Algeria, extending south-west from the southern Sahara Desert through the Sahel to the Sudanian savanna zone. Mali's size is 1,240,192 square kilometers. Desert or semi-desert covers about 65 percent of Mali's total area (1,240,192 square kilometers). The Niger River creates a large and fertile inland delta as it arcs northeast through Mali from Guinea before turning south and eventually emptying into the Gulf of Guinea. The territory encompasses three natural zones: the southern cultivated Sudanese zone, central semi-desert Sahelian zone, and northern desert Saharan zone. The terrain is primarily savanna in the south and flat to rolling plains or high plateau (200–500 meters in elevation) in the north. There are rugged hills in the northeast, with elevations of up to 1,000 meters. The Niger (with 1,693 kilometers in Mali) and Senegal are Mali's two largest rivers. The Niger is generally described as Mali's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geology Of Algeria
The geology of Algeria is diverse; the country divides into three different tectonostratigraphy, tectono-stratigraphic domains. In the south and west is the West African craton, West African Craton which consists of Precambrian granite, granitic basement (geology), basement and surrounding Neoproterozoic mobile belts. Further south the Tuareg Shield comprises the Hoggar, Adrar des Iforas and Aïr Mountains, Air sub-shields which have each been affected by tectono-thermal events touching much of the continent. In the north are the Alpine orogeny, Alpine chain mountains with a succession of folded and over-thrust strata. Economic geology The production of oil and gas is important to Algeria's economy, being List of countries by natural gas production, Africa's main producer of the latter. Its reserves were estimated at 4.502 trillion m3 at the end of 2008. Productive fields are found in anticlines, faulted anticlines or domes; the reservoirs being in Cambrian, Cambro-Ordovician, Tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sedimentary Basins Of Africa
Sedimentary rocks are types of rock formed by the cementation of sediments—i.e. particles made of minerals (geological detritus) or organic matter (biological detritus)—that have been accumulated or deposited at Earth's surface. Sedimentation is any process that causes these particles to settle in place. Geological detritus originates from weathering and erosion of existing rocks, or from the solidification of molten lava blobs erupted by volcanoes. The geological detritus is transported to the place of deposition by water, wind, ice or mass movement, which are called agents of denudation. Biological detritus is formed by bodies and parts (mainly shells) of dead aquatic organisms, as well as their fecal mass, suspended in water and slowly piling up on the floor of water bodies (marine snow). Sedimentation may also occur when dissolved minerals precipitate from water solution. The sedimentary rock cover of the continents of the Earth's crust is extensive (73% of the Earth' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sahara
The Sahara (, ) is a desert spanning across North Africa. With an area of , it is the largest hot desert in the world and the list of deserts by area, third-largest desert overall, smaller only than the deserts of Antarctica and the northern Arctic. The name "Sahara" is derived from , a broken plural form of ( ), meaning "desert". The desert covers much of North Africa, excluding the fertile region on the Mediterranean Sea coast, the Atlas Mountains of the Maghreb, and the Nile, Nile Valley in Egypt and the Sudan. It stretches from the Red Sea in the east and the Mediterranean in the north to the Atlantic Ocean in the west, where the landscape gradually changes from desert to coastal plains. To the south it is bounded by the Sahel, a belt of Tropical and subtropical grasslands, savannas, and shrublands, semi-arid tropical savanna around the Niger River valley and the Sudan (region), Sudan region of sub-Saharan Africa. The Sahara can be divided into several regions, including ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
China National Petroleum Corporation
The China National Petroleum Corporation (CNPC) () is a major national oil and gas corporation of China and one of the largest integrated energy groups in the world. Its headquarters are in Dongcheng District, Beijing, Dongcheng District, Beijing. CNPC was ranked fourth in 2022 Fortune Global 500, a global ranking of the largest corporations by revenue. Corporate structure CNPC is the government-owned parent company of publicly listed PetroChina, which was created on November 5, 1999, as part of the restructuring of CNPC. In the restructuring, CNPC injected into PetroChina most of the assets and liabilities of CNPC relating to its hydrocarbon exploration and production, Oil refinery, refining and marketing, chemicals and natural gas businesses. CNPC and PetroChina develop overseas assets through a joint venture, the CNPC Exploration & Development Company (CNODC), which is 50% owned by PetroChina. In March 2014, CNPC Chairman Zhou Jiping announced that CNPC would be opening six ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Woodside Energy
Woodside Energy Group Ltd (formerly Woodside Petroleum Ltd) is an Australian petroleum exploration and production company. Woodside is the operator of oil and gas production in Australia and also Australia's largest independent dedicated oil and gas company. It is a public company listed on the Australian Securities Exchange and has its headquarters in Perth, Western Australia. In the 2020 Forbes Global 2000, Woodside was ranked as the 1328th-largest public company in the world. History Woodside was incorporated on 26 July 1954. It was originally established as Woodside (Lakes Entrance) Oil Co NL, a no liability company (NL), and named after the small town of Woodside, Victoria. The company was floated by accountant Rees Withers, whose firm serviced a number of small exploration companies in Gippsland where Australia's first oil field had been discovered. The company initially struggled to raise funds after a lack of initial success. In 1956, stockbroker Geoff Donaldson, who ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
