TORONTO -- The Canadian dollar tumbled almost half a U.S. cent late morning Friday amid a huge miss in expectations for job creation last month.

The loonie was down 0.33 of a cent to 91.08 cents US as Statistics Canada reported that the economy created a paltry 200 jobs during July. Economists had generally expected that 20,000 jobs would be created.

The jobless rate dipped 0.1 of a point to 7.0 per cent.

Traders were increasingly risk averse at the end of the week amid a number of geopolitical flashpoints and that also weighed on the loonie.

Traders bought into U.S. Treasuries and the yield on the benchmark 10-year bond stood at 2.38 per cent, down from 2.43 per cent late Thursday, which was already the lowest level of the year.

The Russia/Ukraine standoff was the primary focus for investor worry as traders considered the odds of Russia invading its neighbour in order to prop up Ukrainian rebels. There is also concern about how sanctions and countersanctions could derail a still-fragile economic recovery in Europe.

Barclays Reserch noted that there are "fears that Russia may widen its ban on agricultural imports to include the car, shipping, and aerospace sectors" after announcing a ban in food imports from the West.

Meanwhile, President Barack Obama authorized U.S. airstrikes in northern Iraq, warning they would be launched to defend American troops and civilians under siege from Islamic State militants.

On top of this, there was a breakdown in the ceasefire between Israel and Hamas in Gaza.

Gold prices turned lower after two days of gains with the December bullion contract in New York down 80 cents to US$1,311.70 an ounce.

Elsewhere on the commodity markets, September crude in New York gained 16 cents to US$97.50 a barrel and August copper was unchanged at US$3.18 a pound.

There didn't seem to be much reaction to positive Chinese data. Exports jumped 14.5 per cent from a year earlier, double June's 7.2 per cent growth, customs data showed Friday. However, imports fell 1.6 per cent, down from the previous month's 5.5 per cent expansion.

The decline in July imports exceeded analyst forecasts and was a sign domestic economic activity might be weakening. So far this year, imports are down 0.8 per cent compared with the same period last year.