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The Leonean Orogeny 3.5 to 2.9 billion years ago and the Liberian Orogeny 2.9 to 2.5 billion years ago both influenced the Archean rocks.. Greenstone belts, sequences of metamorphic and volcanic rocks associated with cratons and used by geologists to study early tectonics are found in south-central Liberia, dating to 2.1 billion years ago.
American Association of Petroleum Geologists (AAPG) – Professional geological association; American Crystallographic Association; American Gem Society (AGS), also known as American Gemological Society – American trade association
Cletus Segbe Wotorson (13 March 1937 – 13 August 2024) was a Liberian politician and geologist. On 26 March 2009, he was elected as President Pro Tempore of the Senate of Liberia, beating out fellow Senator Gbehzohngar Milton Findley. [1] He served until 2012. [2] Wotorson died on 13 August 2024, at the age of 87. [3]
Geologists' Association; Geological Society of Glasgow; I. Institute on Lake Superior Geology; International Association for Engineering Geology and the Environment;
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A Liberian tropical forest. Environmental issues in Liberia include the deforestation of tropical rainforest , the hunting of endangered species for bushmeat , the pollution of rivers and coastal waters from industrial run-off and raw sewage, and the burning and dumping of household waste.
Seventeen sections, including two outside the United States, were recognized by 1973. On the occasion of the association's twenty-fifth year, twenty-two sections formed the regional units of the association. In 1964, AEG was accepted as a member society of the American Geological Institute. Membership is presently located in 15 countries.
The Mano River Union (MRU) is an international association initially established between Liberia and Sierra Leone by the 3 October 1973 Mano River Declaration. [1] It is named for the Mano River which begins in the Guinea highlands and forms a border between Liberia and Sierra Leone. On 25 October 1980, Guinea joined the union. [2]