Igeler Fault

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View from Liescher Berg to the Igeler Fault. The viewing direction is approximately north-northeast.

The Igeler Fault, also called Igeler Sprung , is a geological break ( fault ) running in a southwest-northeast direction in the Triassic overburden of the Trier Bay northwest of the town of Igel on the Upper Moselle , about ten kilometers upstream from Trier . It is just one of other similarly oriented faults in the region. In contrast to many of these faults, which are not immediately recognizable for the layman, the effects of the Igeler fault can be clearly seen - from the 347 m high Liescher Berg opposite the village above Wasserliesch .

The viewer fall on the opposite bank of the Mosel from the On the Lookout Mountain Liescher early Triassic derived red sandstone rocks of the Middle and Upper Bunter immediately apparent. Immediately to the north-west of it ("left next to it"), only around 100 meters further up the slope, however, grayish rocks of the Upper Muschelkalks from the Middle Triassic come to light. In sedimentary rocks, younger layers or layer stacks normally lie on top of the older layer stacks. Since the Upper Muschelkalk is the much younger of the two layer stacks and the layers there are generally largely horizontal (bottomed), these sand and limestone cliffs should actually not appear so close together on the banks of the Moselle near Igel. The reason that they do, is an almost vertical offset of the stack of layers to one another - the Igeler Fault. Here, the floe to the northwest of the fault is geologically deeper than the block to the southeast of the fault, so that the layers of both the upper and the middle shell limestone * have been preserved there, while they have already been removed on the southeastern floe . The Igeler fault continues to the southwest below the Moselle and on the northwest flank of the Liescher mountain.

* The Middle Muschelkalk forms the lower slope of the Moselle bank, less noticeable in terms of landscape.

literature

  • Federal Institute for Geosciences and Raw Materials (Ed.): Geological overview map 1: 200,000: CC 6302 Trier . 1987.