GLOBAL MARKETS-China worries chill markets, copper dives
* Copper lowest since 2010, gold hits 5-1/2 mth high
* Stocks tumble in Europe, Wall Street to start down around 0.2 pct
* China central bank ready to ease policy if needed - Reuters report
* Yen edges higher as Australian dollar loses ground
By Marc Jones
LONDON, March 12 (Reuters) - A fall in copper to near four-year lows combined with increasing concern about China's economic slowdown sent a wave of unease on Wednesday through world financial markets.
Global stocks fell for a fourth day and copper, often regarded as a proxy for China's economic fortunes, hit its lowest level since 2010 after Shanghai futures had again fallen by their 5 percent daily limit.
U.S. stock futures prices pointed to another negative start for Wall Street later, with little in the way of U.S. data to drag attention away from the China anxiety.
In Europe, bourses from London to Lisbon tumbled and safe-haven German government bonds were in demand as the jitters added to the effects of the tug-of-war over Crimea, which has pitted Russia against Ukraine and the West. Continuación...