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Ammonite Sonninia 20cm F3851
Breccia is a type of rock composed of irregular fragments of (sometimes older and other) rocks. These fragments often occur in a cemented matrix of smaller material. Geologist mainly describe them as clastic rocks. Sometimes, the matrix and its debris have a similar origin, but this isn’t always the case.
Generally, breccia with a large amount of angular fragments, has been transported less than breccia with rounder fragments.
The angular fragments can be observed easily in this breccia. Photo Marijn Roosen
Breccia in Sibinj Kmpotski, Croatia. Photo Herman Zevenberg
Polished breccia with visible angular components. Photo: Herman Zevenberg.
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