description Holleford Overview
Holleford is a buried meteorite impact structure in Ontario, Canada. Because the crater is not preserved as an obvious surface feature, its presence was identified through geophysical evidence, including magnetic and gravity surveys, during investigations in the 1950s. Holleford is studied as an example of an impact structure concealed beneath later geological materials. Its buried setting illustrates how impact sites can be detected indirectly.
help Holleford FAQ
Where is the Holleford impact structure?
Holleford is in Ontario, Canada. It is buried, so the structure is not visible as an obvious surface crater.
How was Holleford discovered?
Researchers identified Holleford through geophysical evidence, including magnetic and gravity surveys. These methods can reveal buried changes in rock density and structure.
Why is Holleford called a buried impact structure?
The original crater lies beneath later geological material and is not preserved as a clear surface feature. Its impact origin is inferred from subsurface geological and geophysical evidence.
When were magnetic and gravity surveys used at Holleford?
Magnetic and gravity surveys helped identify Holleford during investigations in the 1950s. Those surveys revealed subsurface patterns consistent with an impact structure.
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