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In 1965, it was merged with the Geological Museum and Overseas Geological Surveys, under the name of Institute of Geological Sciences. [3] On 1 January 1984, the institute was renamed the British Geological Survey (and often referred to as the BGS), a name still carried today. [4] Since 1835, there have been 20 directors of the survey.
The geological structure of Great Britain is complex, resulting as it does from a long and varied geological history spanning more than two billion years. This piece of the Earth's crust has experienced several episodes of mountain building or ' orogenies ', each of which has added further complexity to the picture.
The British Geological Survey lists Snowdonia and the Lake District as having extremely large volcanic eruptions around 450 Ma (million years ago), Edinburgh Castle lying upon the remains of a volcano dating back 350 Ma, and some islands of western Scotland as being remnants of volcanoes from around 60 Ma.
The geology of Europe is varied and complex, and gives rise to the wide variety of landscapes found across the continent, from the Scottish Highlands to the rolling plains of Hungary. Europe's most significant feature is the dichotomy between highland and mountainous Southern Europe and a vast, partially underwater, northern plain ranging from ...
The Chalk Group is now divided into a White Chalk Subgroup and a Grey Chalk Subgroup, both of which are further subdivided into formations.These modern divisions replace numerous earlier divisions, references to which occur widely on geological maps and in other geological literature.
This is a list of countries by feldspar production in 2019 based on British Geological Survey data. [1] Feldspar production (tonnes) by country Rank Country
The Group is the lowermost of two geological units that take their name from their colouration due to the presence of the mineral glauconite, the other being the Upper Greensand Formation. The unit was deposited in shallow marine conditions. In southern England the unit sharply but continuously overlies rocks of the Wealden Group.
The Cheshire Basin is a late Palaeozoic and Mesozoic sedimentary basin extending under most of the county of Cheshire in northwest England. It extends northwards into the Manchester area and south into Shropshire.