Holleford Crater, Impact crater in South Frontenac, Ontario, Canada
Holleford Crater is an impact structure located in South Frontenac in Ontario, forming a circular depression about 2.35 kilometers across. The site displays layered rock formations from multiple geological periods, visible through the natural topography of the area.
The crater formed approximately 550 million years ago during the Ediacaran period when a meteorite struck Earth. Scientists confirmed the impact structure in the 1950s through magnetic surveys and drilling conducted by the Geological Survey of Canada.
The Miller Hall Museum of Geology at Queen's University maintains exhibits about the crater, providing educational resources for geology students and researchers.
The site sits approximately 27 kilometers north of Kingston and is marked by a commemorative plaque on private farmland. Visitors should know the area remains largely undeveloped, and access is limited due to its location on working agricultural property.
The meteorite that created this crater traveled at roughly 55,000 kilometers per hour when it struck Earth, leaving a mark that has lasted millions of years. Its discovery through modern scientific methods reveals how ancient geological events remain hidden beneath the landscape.
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