Metalliferous black shales - a probable source of mercury in pike in Lake Kolmisoppi, Sotkamo, Finland
Black shale formations 20‒400 m thick, deposited 1.96‒2.10 Ga ago and rich in carbon, sulphur and metals, are encountered in eastern Finland. They commonly contain some 0.2 ppm mercury, but in certain localities concentrations are high due to hydrothermal addition; in the area of lake Kolmisoppi in...
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| Format: | Article |
| Language: | English |
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Geological Society of Finland
1990-12-01
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| Series: | Bulletin of the Geological Society of Finland |
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| Online Access: | http://www.geologinenseura.fi/bulletin/Volume62/sgs_bt_062_2_pages_167_175.pdf |