11.The water of the lake is highly alkaline, the pH varies in the range of 7.5 - 9.2 as well as a fairly high carbonate hardness of 7-11 °n.
12.The base of the lake is mostly Precambrian granite rocks and igneous rocks rich in magnesium, iron and aluminum.
13.The central basin developed earliest.
Lake Tanganyika began to form in the period 12-9 million years ago.
14.The northern part of Lake Tanganyika developed about 8 - 7 million years ago.
15.The southern part formed 4 - 2 million years ago when the western lake basin was uplifted.
This led to the formation of a tectonic ditch that quickly filled with water.
16.Sometimes the lake dries up to a considerable extent.
Between 150 and 50 thousand years ago,the water level of the lake dropped so much that it was divided into 3 independent reservoirs located in its deepest parts.
17.In Lake Tanganyika live hippos, crocodiles and many species of fish, most of which are endemic.
Over 200 endemic species are fish of the cichlid family.
18.Life in Lake Tanganyika occurs up to a depth of 200 meters.
Due to the low fluctuations in the ambient temperature, surface waters do not mix with deep water, which prevents oxygen transport from the surface to the lower parts of the lake.
19.In 1883, a species of freshwater jellyfish was discovered in the waters of Tanganyika, which may suggest that the lake was once connected to the ocean or that the jellyfish got into the lake straight from the river.
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