Foumban Shear Zone, Geological fault zone in Central Cameroon.
The Foumban Shear Zone is a fault zone running through central Cameroon where rock layers show clear signs of intense deformation. It forms part of a major fault system that crosses the region with distinct structural characteristics visible in the exposed geology.
This fault zone formed around 640 million years ago during the Pan-African mountain-building event. It experienced significant changes later as the South Atlantic Ocean began to open.
Local communities near the shear zone have integrated the geological formations into their understanding of the regional landscape through generations of observation.
The site is accessible via main roads connecting to nearby towns and is best explored with a local guide familiar with the terrain. Visitors should bring sturdy footwear and water when examining the exposed rock formations on foot.
This fault correlates directly with the Pernambuco fault in northeastern Brazil, providing geological evidence of the ancient continent. The alignment shows how Africa and South America were once connected before the Atlantic Ocean opened between them.
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