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 1.5 pct, S&P 500 1.4 pct, Nasdaq 1.5 pct (Updates to afternoon 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 0.9 percent and was on track for its fourth rise of the past five sessions, up 3.3 percent over that period. The euro fell 1.4 percent against the dollar.
"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...