The quarry exposes siliceous shales, siliceous limestones, and—at the location of the sign—the so-called “siliceous transitional layers.” The latter consist of black alum shales, siliceous clay shales, limestones, and tuff layers. These deposits belong to the so-called Kulm facies of the Lower Carboniferous (approximately 330 million years ago) and formed in a continuously subsiding basin on the northern edge of the rising Variscan Mountains. Fossils document the marine life of the Carboniferous Sea at water depths of up to 200 m. Mussels, cephalopods, and the fossilized remains of plants can be found there in the nearly vertically folded rock layers or in the surrounding scree.
Age of the rocks: Kulm facies, Lower Carboniferous (approximately 330 million years ago)
Use of the rocks: The siliceous limestone was quarried here for house construction, while the siliceous shale was crushed for road construction and used as gravel.
You’ll find the quarry at Bromberg on the L740 toward Küstelberg; after passing the turnoff to Glindfel, turn right into the parking lot about 750 meters further on. After a walk of about 100 meters, you’ll reach the quarry.
Text source: Touristik-Gesellschaft Medebach mbH