RTRS:UPDATE 1-Oil down more than $1 as Greece, US econ outlook weighs
* Brent slides as low as $111.84; U.S. oil dips to $91.42
* Futures dip on fears of a contagion of Greece crisis -analyst
* Fall in prices to offer opportunities to buy -analyst
* Brent to rebound to $115/bbl -technicals (Adds comments, updates prices)
By Manash Goswami
SINGAPORE, June 20 (Reuters) - Brent crude fell more than $1 on Monday, extending last week's losses, as concern over a debt crisis in Greece and a weaker economic outlook for the world's top oil consumer, the United States, weighed on prices.
Brent crude LCOc1 slipped $1.24 a barrel to $111.97 a barrel, while U.S. oil CLc1 declined $1.25 a barrel to $91.76 a barrel by 0647 GMT.
Euro zone finance ministers postponed a final decision on extending 12 billion euros ($17 billion) in emergency loans to Greece, saying Athens would first have to introduce harsh austerity measures, pushing the euro lower.
The dollar index gained 0.5 percent against a basket of currencies, weighing on oil prices.
