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Stop 12 at Ries

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Small wooded hill in Wennenberg, north of Alerheim
Small wooded hill in Wennenberg, north of Alerheim
Photo: G. Osinski, University of Western Ontario
Location: Inner ring of the Ries structure

Polymict crystalline impact breccia of the inner ring
Polymict crystalline impact breccia of the inner ring
Photo: G. Osinski, University of Western Ontario
Location: Inner ring of Ries structure
Scale: Length of rock hammer is 35 centimeters

Wennenberg is located within the "inner ring" of the Ries structure. It is composed of fractured and faulted crystalline rocks uplifted from several hundreds of meters in depth, possibly more than 1 kilometer. This represents part of the central uplift at the Ries structure. At this locality, the crystalline rocks have been completely fractured and broken up to form polymict impact breccia, an impact breccia composed of different types of crystalline rock. To learn more about impact breccias, click here.

Panorama looking south of Wennenberg
Panorama looking south of Wennenberg
Photo: G. Osinski, University of Western Ontario
Location: Inner ring of Ries structure
Scale: Distance to the hills in the far background is approximately 10 kilometers

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