Globe Trekker recently joined forces with the Geological Society of America (GSA), Subaru and Trek Mountain Bicycles to create a one-of-a-kind experience for participants at the recent GSA convention in Denver, Colorado. The Globe Trekker Twitter competition celebrated our adventure. And the lucky winner of a very cool Camelbak backpack is...

@THETALETWISTER!!!

Congratulations @thetaletwister for your tweet in answer to the question:

QUESTION: WHAT IS THE GREAT UNCONFIRMITY?

@TALETWISTER ANSWER:
Great Unconformity is D biggest crack/gap on D earth surface caused by erosion.Ref mainly to D 1 in Grnd Canyon & in Sicar Pt.

With thanks to our judge expert geologist Laurie Brandt @bikelaurie

THANKS TO EVERYONE FOR THEIR TWEETS!