LONDON (Reuters) - Gold surged to a record high above $1,040 per ounce on Tuesday, with buying fueled by dollar weakness after a report, later denied, that Gulf Arab states were considering abandoning the U.S. currency for oil trade. Both spot gold prices and U.S. gold futures have benefited from a convergence of factors including the dollar's decline, technical buying momentum and worries about potential inflation as central banks struggle to emerge from unprecedented fiscal stimulus measures. "In an environment where interest rates are virtually zero, the incremental cost of moving into gold is nil. It stands to reason for...