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Medellin and suburbs form a large city, currently with over 3,200,000 inhabitants. The complex, located in a relatively narrow valley of the Central Cordillera at 6°N, is dominated by plateaux and peaks reaching 3,000 m. The geology is complex, probably formed under the influence of tectonic...
A network of over 100 Global Stratotype Sections and Points (GSSPs) is being established by the International Commission on Stratigraphy, a Commission of the International Union of Geological Sciences. This network of sites, about 60% of which are already ratified, relates to all the stage,...
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