Marielle Thompson Photo: CFP

 The "girl power" of Marielle Thompson and Kelsey Serwa gave Canada the freestyle skiing bragging rights at the Sochi Olympic Games on Friday when the duo locked down the gold and silver medals in the women's ski cross final.

A third one-two in freestyle skiing at the Games ensured Canada would top the medals standings in the sport, having taken four of the 10 titles to three for the United States.

Gold medal favorite Thompson got off to her usual explosive start to take an early lead in the decisive race of the last freestyle event at Extreme Park with Serwa tucked in behind her.

Thompson's gliding skills and long but stable jumps make her a formidable opponent even in the rough and tumble of the pack and skiing out front she never looked like being caught.

"It's crazy. I don't think it's even sunk in yet. I just had a big wave of emotion," the 21-year-old said.

"I wasn't really nervous until I got to the final, and then I was like 'wow, all these skiers are really great, I'm going to have to turn it on and go as fast as I can!'"

Thompson said the spirit of comradeship in the Canadian women's freestyle skiing team had been a driving force behind the medal haul.

"We're all about girl power from the start, we're just having fun all day," she said.

"I'm so glad that I get to share the podium with Kelsey. We definitely tried to help each other."