Fortescue Metals Group FMG.AX and BHP Group BHP.AX added 1.8% and 0.9%, respectively. By Upasana Singh March 7 (Reuters) - Australian shares closed at a one-week low on Monday, as a global equity sell-off due to the Russia-Ukraine crisis dragged financials and technology stocks and outweighed sharp gains in the energy and mining sectors. Fears of a U.S. and European ban on Russian oil triggered a sharp rise in crude prices to their highest since 2008, raising worries of higher global inflation and a complicated policy landscape for central banks.