Tin belts on the continents around the Atlantic Ocean

摘要: Tin is inhomogeneously distributed on the continents, in relatively narrow, continent-sized belts. On a reconstruction of continents around Atlantic Ocean before continental drift, belts extend unbroken from one continent to another. As ages tin mineralizations vary within belts, an argument can be derived that source and its associated elements must crust. It further speculated concentrations workable deposits occur intersection orogenic with zones primitive enrichment tin. The ultimate cause such primary geochemical culminations may well lie back early history earth.