sedimentary rocks. The Kuroko deposits, Japan; Buchans deposits, Canada; and Skellefte deposits, Sweden are classic districts of this group. In the geological...
20 KB (2,537 words) - 22:35, 8 March 2024
(tributary of Tisza) Struma - 415 km (258 mi) Adige - 410 km (250 mi) Skellefte - 410 km (250 mi) Tiber - 406 km (252 mi) - Vah - 406 km (252 mi) (tributary...
261 KB (9,276 words) - 20:32, 7 August 2024
extracting metals from the ground, began as early as 375 bc. The mineral-rich Skellefte field lies within the Boliden Area, where almost 30 mines have been opened...
31 KB (3,438 words) - 18:15, 24 June 2024