Aquitanian Plain
The Aquitaine Basin is the second largest Mesozoic and Cenozoic sedimentary basin in France after the Paris Basin, occupying a large part of the country's southwestern quadrant. Its surface area covers 66,000 km2 onshore. It formed on Variscan basement which was peneplained during the Permian and then started subsiding in the early Triassic. The basement is covered in the Parentis Basin and in the Subpyrenean Basin—both sub-basins of the main Aquitaine Basin—by 11,000 m of sediment. Geography The Aquitaine Basin, named after the French region Aquitaine, is roughly funnel-shaped with its opening pointing towards the Atlantic Ocean. Here it meets for 330 km the straight, more or less north–south-trending Atlantic coastline but continues offshore to the continental slope. To the south, it is delimitated for 350 km by the west-northwest–east-southeast trending Pyrenees. In the southeast, the basin reaches the Seuil de Naurouze (also called ''Seuil du ...
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Aquitaine
Aquitaine (, ; ; ; ; Poitevin-Saintongeais: ''Aguiéne''), archaic Guyenne or Guienne (), is a historical region of southwestern France and a former Regions of France, administrative region. Since 1 January 2016 it has been part of the administrative region of Nouvelle-Aquitaine. It is situated in the southwest corner of metropolitan France, along the Atlantic Ocean and the Pyrenees mountain range on the border with Spain; for most of its Recorded history, written history Bordeaux has been a vital port and administrative centre. It is composed of the five Departments of France, departments of Dordogne, Lot-et-Garonne, Pyrénées-Atlantiques, Landes (department), Landes and Gironde. Gallia Aquitania was established by the Romans in ancient times and in the Middle Ages, Duchy of Aquitaine, Aquitaine was a kingdom and a duchy, whose boundaries fluctuated considerably. History Ancient history There are traces of human settlement by prehistoric peoples, especially in the Périgord, ...
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Alpine Orogeny
The Alpine orogeny, sometimes referred to as the Alpide orogeny, is an orogenic phase in the Late Mesozoic and the current Cenozoic which has formed the mountain ranges of the Alpide belt. Cause The Alpine orogeny was caused by the African continent, the Arabian Peninsula, the Indian subcontinent, and the Cimmerian plate colliding with Eurasia in the north. Convergent movements between the African, Arabian and Indian plates from the south, and the Eurasian plate and the Anatolian sub-plate from the north – as well as many smaller (micro)plates – had already begun during the early Cretaceous, but the major phases of mountain building began during the Paleocene to the Eocene. The process continues currently in some of the Alpide mountain ranges. The Alpine orogeny is considered one of the three major phases of orogeny in Europe that define the geology of that continent, along with the Caledonian orogeny that formed the Old Red Sandstone Continent when the continents ...
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France
France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlantic, North Atlantic, the French West Indies, and List of islands of France, many islands in Oceania and the Indian Ocean, giving it Exclusive economic zone of France, one of the largest discontiguous exclusive economic zones in the world. Metropolitan France shares borders with Belgium and Luxembourg to the north; Germany to the northeast; Switzerland to the east; Italy and Monaco to the southeast; Andorra and Spain to the south; and a maritime border with the United Kingdom to the northwest. Its metropolitan area extends from the Rhine to the Atlantic Ocean and from the Mediterranean Sea to the English Channel and the North Sea. Its Regions of France, eighteen integral regions—five of which are overseas—span a combined area of and hav ...
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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 formatio ...
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Cenozoic
The Cenozoic Era ( ; ) is Earth's current geological era, representing the last 66million years of Earth's history. It is characterized by the dominance of mammals, insects, birds and angiosperms (flowering plants). It is the latest of three geological eras of the Phanerozoic Eon, preceded by the Mesozoic and Paleozoic. The Cenozoic started with the Cretaceous–Paleogene extinction event, when many species, including the non-avian dinosaurs, became extinct in an event attributed by most experts to the impact of a large asteroid or other celestial body, the Chicxulub impactor. The Cenozoic is also known as the Age of Mammals because the terrestrial animals that dominated both hemispheres were mammalsthe eutherians ( placentals) in the Northern Hemisphere and the metatherians (marsupials, now mainly restricted to Australia and to some extent South America) in the Southern Hemisphere. The extinction of many groups allowed mammals and birds to greatly diversify so that large m ...
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Mesozoic
The Mesozoic Era is the Era (geology), era of Earth's Geologic time scale, geological history, lasting from about , comprising the Triassic, Jurassic and Cretaceous Period (geology), Periods. It is characterized by the dominance of archosaurian reptiles such as the dinosaurs, and of Gymnosperm, gymnosperms such as cycads, ginkgoaceae and Araucariaceae, araucarian conifers; a hot Greenhouse and icehouse earth, greenhouse climate; and the tectonic break-up of Pangaea. The Mesozoic is the middle of the three eras since Cambrian explosion, complex life evolved: the Paleozoic, the Mesozoic, and the Cenozoic. The era began in the wake of the Permian–Triassic extinction event, the largest mass extinction in Earth's history, and ended with the Cretaceous–Paleogene extinction event, another mass extinction whose victims included the non-avian dinosaurs, Pterosaur, pterosaurs, Mosasaur, mosasaurs, and Plesiosaur, plesiosaurs. The Mesozoic was a time of significant tectonic, climatic, an ...
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Saint-Marcet
Saint-Marcet is a commune in the Haute-Garonne department in southwestern France. Population See also *Communes of the Haute-Garonne department The following is a list of the 586 communes in the French department of Haute-Garonne. The communes cooperate in the following intercommunalities (as of 2025):

Meillon
Meillon (; ) is a commune in the Pyrénées-Atlantiques department in south-western France. See also *Communes of the Pyrénées-Atlantiques department The following is a list of the 545 Communes of France, communes of the Pyrénées-Atlantiques Departments of France, department of France. The communes cooperate in the following Communes of France#Intercommunality, intercommunalities (as of 202 ... References Communes of Pyrénées-Atlantiques {{Pau-geo-stub ...
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Lacq Gas Field
The Lacq gas field is a natural gas field located in Nouvelle-Aquitaine. Discovered in 1950, it was developed by Total S.A., determining it to have initial total proven reserves of the Lacq gas field are around 8.8 trillion ft3 (251 km3). It began production of natural gas and condensates in 1958, with a production rate of around 1 billion ft3/day (35×105 m3). Geology The Lacq Gas Field is a structural trap located in an anticline which formed in the southern part of Aquitaine Basin starting in the Cretaceous until the Tertiary with the Arzacq syncline to the north and the Eocene flysch trough in front of the Pyrenees foothills to the south. The field is 16 km long and 10 km wide with oil produced beneath a Tertiary unconformity at 700 m and a hydrosulfuric gas beneath a pre-Cretaceous unconformity at about 4000 m. The anticline was identified with two exploration geophysics electric lines in 1943 and a magnetotelluric survey in 1943, ...
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Lavergne, Lot-et-Garonne
Lavergne is a commune in the Lot-et-Garonne department in the Nouvelle-Aquitaine region in south-western France. See also *Communes of the Lot-et-Garonne department The following is a list of the 319 communes of the French department of Lot-et-Garonne. The communes cooperate in the following intercommunalities (as of 2025):

Cazaux (Gironde)
Cazaux () is a commune of the Ariège department in southwestern France. Population See also *Communes of the Ariège department The following is a list of the 325 communes of the Ariège department of France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French ... References Communes of Ariège (department) Ariège communes articles needing translation from French Wikipedia {{Ariège-geo-stub ...
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Parentis-en-Born
Parentis-en-Born (; ) is a Communes of France, commune in the Landes (department), Landes Departments of France, department in Nouvelle-Aquitaine in southwestern France. It has one of the biggest oil reserves of continental western Europe. The Biscarrosse – Parentis Airport is located in the commune. Population See also *Communes of the Landes department *Lac de Biscarrosse et de Parentis References

Lac de Biscarrosse et de Parentis Communes of Landes (department), Parentisenborn {{Landes-geo-stub ...
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