Discover Why All Curling Stones Originate from Only Two Global Locations
The world of curling revolves around its unique stones, which originate exclusively from two notable locations: Ailsa Craig in Scotland and the Trefor granite quarry in Wales. Both sites have been integral to the sport, producing stones that are uniquely suited for the icy surfaces of curling rinks.
Geological Significance of Curling Stones
Curling stones weigh approximately 40 pounds and are crafted from specific types of granite. Ailsa Craig has supplied stones since the early 19th century, while Trefor joined in after World War II. Each location offers distinct varieties: Ailsa Craig produces common green and blue hone stones, while Trefor provides blue Trefor and red Trefor variants.
Properties of Curling Stones
- Running Surface: This is the ring on the bottom of each stone that skids across the ice.
- Striking Surface: Located around the sides, this surface collides with other stones during gameplay.
Geologists note that Ailsa Craig’s stones formed around 60 million years ago, while Trefor’s stones date back approximately 400 to 500 million years. The comparatively young age of these stones is advantageous because they are less prone to stress and damaging fractures.
Scientific Analyses and Findings
Research conducted by mineralogist Derek Leung from the University of Regina highlights that both sources contain quartz, previously thought to be a detriment. However, the absence of fractures in the stones may be attributed to their geological youth.
Leung’s findings indicate that Ailsa Craig’s blue hone is favored for the running surface due to its small, uniform grain size, which helps maintain a smooth sliding experience. Conversely, for the striking surface, variations in grain size are advantageous as they help mitigate damage from collisions.
Future Implications for Curling Stones
Although Ailsa Craig and Trefor are the primary sources for curling stones, there is potential for exploration beyond these established quarries. Research is ongoing to find alternative stone sources that may share similar geological characteristics. Nova Scotia has been proposed as a prospective location worth examining.
- Nova Scotia: Suggested for further geological exploration
With advancements in geographical knowledge, there is hope that new rock deposits could eventually contribute to the curling community, ensuring the sport can continue to thrive in the future.
As curling gains popularity, the significance of its stones from Ailsa Craig and Trefor will remain central, reinforcing the connection between sports and geology.
