GLOBAL MARKETS-Wall St leads stocks selloff; dollar slides on Fed views

* Crude oil prices fall further, Brent at near 4-year low* Dollar retreats on global growth concern, Fed views* Wall Street stocks tumble for third straight session(Updates to U.S. market close)By Rodrigo CamposNEW YORK, Oct 13 (Reuters) - Stocks on Wall Street tumbled in late selling on Monday as the technical picture soured for the S&P 500, while the U.S. dollar posted its worst day in a year af