happened between 700 and 500 million years ago to form the Gondwana supercontinent. This collision is thought to have remobilised base metals, largely already present in the sediments that had accumulated in the basin between the two cratons. These brines then concentrated the base metals either along stratigraphic boundaries, or along fractures, faults or within structurally controlled 'traps' (such as the nose of a fold). The collision also produced crustal shortening, during which the stratigraphic sequence was tectonically pushed northwards on top of the Congo Craton. The Lufilian Arc contains two diamictites, megaconglomerates of glacial origin. One of those is correlated with the Sturtian glaciation, while another correlates with the Marinoan Glaciation, both global glaciation events that had profound influence on the history of the planet. The Lufilian Arc is correlated along trend to the west with the Damara Orogen in Namibia, which also hosts large mineral deposits. Copperbelt Province is rich with mineral finds and mines. The name of the province is given by the rich finds of copper ore (e.g. Chingola, Konkola, Nchanga Mines), but notable are also emerald mines along Kafubu River, which in the first 6 months of 2011 yielded 3.74 tons of high quality emeralds. Economy and education As 2004, the province had 856 basic schools, 71 high schools and the number of school children out of school in ages between 7 and 15 stood at 856 . The unemployment rate was 32 per cent and the general unemployment rate for youth stood at 55 per cent as of 2008. The province had 213 doctors as of 2005. There were 377 Malaria incidence for every 1,000 people in the province as of 2005 and there were 26,799 AIDS death as of 2010. The total area of crops planted during the year 2014 in the province was 122,525.52 hectares which constituted 6.46% of the total area cultivated in Zambia. The net production stood at 315,153 metric tonnes, which formed 7.74% of the total agricultural production in the country. Maize was the major crop in the province with 37,610 metric tonnes, constituting 17.56% of the national output See also Ndola City Council Notes References External links Provinces of Zambia Copper mining Geology of Zambia