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The French Geological Survey [Bureau de recherches géologiques et minières (BRGM)] was officially created by a decree on 23 October 1959. [3]It is the result of the merger of several French geological and mining establishments, namely:
From 2002 to 2006, the French Geological Survey conducted an extensive natural hazards survey throughout the 17 districts of Mayotte and published a hazard zonation map. Some parts of the island face threats from storm surges and landslides and areas with weathered volcanic rock face heightened risk from seismic activity. [5]
Geologic map of France. Divisions in French Regional Geology. The regional geology of France is commonly divided into the Paris Basin, the Armorican Massif, the Massif Central, the Aquitaine Basin, the Pyrenees, the Alps, the Côte languedocienne, the Sillon rhodanien, the Massif des Vosges, the Massif Ardennais, the Alsace graben (Rhine graben) and Flanders Basin.
Charles Friedel (1832–1899), French chemist known for the Friedel–Crafts reaction Georges Friedel (1865–1933), here above described, French crystallographer and mineralogist; son of Charles Edmond Friedel (1895–1972), French applied scientist and mining engineer, founder of BRGM , the French geological survey; son of Georges
In 1998, Éric Gaucher began his career at the French Geological Survey (BRGM) in Orléans. [3] There he led a research unit working in particular on the stability of clay formations for the management of radioactive waste and the geological storage of carbon dioxide.
To carry out the aerial survey task, the IGN was equipped in 1948 with several ex USAAF Boeing B-17 Flying Fortresses, specially modified for the task. They were based at Creil airfield to the north of Paris. The aircraft were replaced by French-built Hurel-Dubois HD.34 twin engined survey aircraft in the late 1950s.
From 1954 to 1963, he worked with the French Geological Survey in Algeria and France, and was influenced by the works of Krige, Sichel, and de Wijs, from the South African school, on the gold deposits of the Witwatersrand. This influence led him to develop the major concepts of the theory for estimating resources he named Geostatistics.
The Friedel family is a rich lineage of French scientists: Georges Friedel (1865–1933), French crystallographer and mineralogist; son of Charles; Edmond Friedel (1895–1972), French Polytechnician and mining engineer, founder of BRGM, the French geological survey; son of Georges; Jacques Friedel (1921–2014), French physicist; son of Edmond