US STOCKS-Wall St slumps 1 pct as dollar strengthens
* Dollar continued uptrend, euro near 12-year low
* Urban Outfitters up after results, Barnes & Noble down
* Crude oil falls, weighing on energy names
* Indexes down: Dow 1.2 pct, S&P 500 1 pct, Nasdaq 1.3 pct (Updates to midday trading)
By Ryan Vlastelica
NEW YORK, March 10 (Reuters) - U.S. stocks fell 1 percent on Tuesday, with major indexes dropping in a broad decline and turning negative for the year amid continued strength in the U.S. dollar.
Concerns over Greece's debt talks added to the day's weakness, which took the S&P 500 below its 50-day moving average, a sign of weak near-term momentum.
The U.S. Dollar index rose 0.7 percent and is on track for its fourth rise of the past five sessions, up 3 percent over that period. The euro fell 0.9 percent against the dollar to nearly a 12-year low.
"There's some concern about what impact this will have on corporate earnings going forward, especially for the big multi-national companies," said Nicholas Colas, chief market strategist at the ConvergEx Group in New York. Continuación...