* STOXX 600, euro zone shares down 0.3 pct
* Wind turbine makers gain after Siemens Gamesa results
* Proposal to separate network assets boosts Telecom Italia
* Swatch, Alfa Laval shine after results (Adds quotes, detail)
LONDON, Jan 30 (Reuters) - European shares fell back on Tuesday as global markets took a risk-averse turn, with cyclical sectors including mining and financials suffering the sharpest losses.
Europe's STOXX 600 dropped 0.6 percent at the open before easing slightly to trade down 0.3 percent, in line with euro zone blue-chips.
The falls followed weaker trading sessions in Asia and Wall Street.
"Today is more of a temporary blip rather than a fundamental change in direction for equities. There were a number of technical indicators pointing towards market complacency and todays move should provide some relief," said Prabhav Bhadani, equity strategist at JP Morgan.
The cyclical sectors leading the charge year-to-date were the worst hit as investors took profits after a strong run.
Goldman Sachs analysts said a correction was becoming increasingly likely as the new year 'melt-up' in stocks had helped the S&P 500 and MSCI World enter their longest period without a correction of more than 5 percent.
Mining and financial stocks were the biggest weight, while defensive sectors outperformed.
"You are seeing some sector rotation with again the winners hit the hardest. People are still looking to stay invested but looking at things that have not performed, looking at value," said Bhadani.
Basic resources stocks sank 1.4 percent, the biggest sectoral fallers as metals prices tumbled, dented by the strengthening dollar. Anglo American was among the worst-performing.
Europe's banking stocks also fell 0.9 percent while financial services stocks dropped 0.8 percent.
Tech stocks meanwhile outperformed the market, gaining 0.3 percent as they recovered from a pullback on Monday when a report Apple would halve iPhone X production weighed on chipmakers.
Results drove the bulk of trading, with investors rewarding Swatch and Alfa Laval while Loomis and Philips disappointed.
Loomis was bottom of the STOXX, down 7.9 percent after the Swedish support services firm reported fourth-quarter profit missed forecasts.
Swatch gained 2.8 percent after impressive results. The Swiss watchmaker's profit rose 28 percent in 2017, and it said it expected 'very positive' growth in 2018.
"The only fly in the ointment is the 20bps margin miss for the full year and approximately 50bps in the second half vs our and the market's expectation, but this should be easy to digest given the overall good (top line) performance," said Baader Helvea analysts.
Outside of results-driven moves, Telecom Italia rose 3.4 percent after sources said it had proposed to separate its network assets.
Swedish engineering group Alfa Laval rose 3 percent after its fourth quarter order intake far exceeded market forecasts.
Wind turbine maker Siemens Gamesa gained 5 percent after its first-quarter results, bringing peer Vestas Wind up with it to the top of the STOXX.
Siemens Gamesa reported orders significantly above brokers' estimates, and a trader said the market was short the stock, making any good news an even bigger boost.
Medical technology firm Philips fell back 2.5 percent, with traders pointing to the firm missing fourth-quarter earnings and revenue expectations.
(Reporting by Helen Reid; Editing by Kit Rees and Raissa Kasolowsky)