European shares rattled by Crimean concerns
* Euro STOXX 50 Volatility Index surges 5.1 pct
* Worries over Crimea tension weigh on stock markets
* FTSEurofirst 300 closes down 0.7 pct at 1,284.32 points
* Euro STOXX 50 falls 0.5 pct to 3,004.64 points
* FTSEurofirst has worst weekly loss since early Jan.
By Sudip Kar-Gupta
LONDON, March 14 (Reuters) - European shares slid lower on Friday as tensions in Ukraine before a weekend referendum in the country's Crimea region sent a pan-European equity index down to its lowest level in more than a month.
The uncertainty over Crimea, after Russia effectively occupied the region following the ousting in Kiev of former pro-Moscow Ukrainian President Viktor Yanukovich, also caused a spike in volatility in equity markets.
The pan-European FTSEurofirst 300 index, which rose 16 percent in 2013, closed down by 0.7 percent at 1,284.32 points - marking its lowest level since early February. The index also fell 3.2 percent over the week - marking its worst weekly loss since late January. Continuación...