* U.S. stocks rise on central bank moves, factory data
* U.S. government debt falls after factory activity index
* Oil rises; substantial output from Gulf Coast still shut
* Dollar at 2-week low versus euro after central bank move
(Recasts with U.S. markets, adds byline; changes dateline; previous LONDON)
By Herbert Lash
NEW YORK, Sept 18 (Reuters) - Stocks rallied worldwide on Thursday while the U.S. dollar and government debt fell, their appeal as havens ebbing after central banks flooded markets with cash to bolster investor confidence battered by the week's financial maelstrom.
Following coordinated measures by six of the world's top central banks to pump more than $180 billion into seized-up global money markets, oil rose to over $100 a barrel and the dollar dropped to a two-week low against the euro, while the yen fell broadly.
The massive burst of liquidity and talk of bank deals lifted global stock markets and curbed a flight to safety for bonds and the dollar a day after stocks worldwide plunged on fears of the turmoil seizing major financial institutions.
"There seems to be more calm in the market but we are not seeing a complete unwind of safety bids," said Michael Pond, Treasury strategist at Barclays Capital in New York.
However, persistent demand for "hard" assets like gold and oil were sign of jitters over the unprecedented market turbulence, Pond said.
In early morning trade, the Dow Jones industrial average <
> was up 169.36 points, or 1.60 percent, at 10,779.02. The Standard & Poor's 500 Index <.SPX> was up 23.18 points, or 2.00 percent, at 1,179.57. The Nasdaq Composite Index < > was up 37.53 points, or 1.79 percent, at 2,136.38.Stocks also were helped by some positive news on the economic front, with a monthly survey by the Philadelphia Federal Reserve showing that factory activity in the U.S. Mid-Atlantic region jumped unexpectedly in September, rising into positive territory for the first time in 10 months.
Prices for U.S. government debt were lower. The benchmark 10-year U.S. Treasury note <US10YT=RR> fell 6/32 to yield 3.45 percent, and the 30-year U.S. Treasury bond <US30YT=RR> fell 6/32 to yield 4.10 percent.
The dollar fell, after having attracted safe-haven bids in recent weeks when U.S. investors bailed out of overseas markets and sent the money back home.
The U.S. Dollar Index <.DXY>, which measures its performance against a basket of major currencies, was down 0.24 percent at 78.048. Against the yen, the dollar <JPY=> shed 0.40 percent to 105.30.
The euro <EUR=> rose 1.78 percent to $1.437.
Gold rallied, as it is one of the few trustworthy assets left, a trader said.
"What is left for people to put their money in?" asked Afshin Nabavi, head of trading at MKS Finance. "They can't trust the banks, they can't trust insurance companies, they can't trust the stock markets."
U.S. light sweet crude oil <CLc1> rose $2.06 to $99.22 a barrel. (Writing by Herbert Lash, Editing by Chizu Nomiyama)