Mountains of equals
| Gleichenberger Kogel | ||
|---|---|---|
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| height | 598 m above sea level A. | |
| location | Styria ( Austria ) | |
| Mountains | Eastern Styrian hill country , south-eastern Alpine foothills | |
| Dominance | 5.4 km → Stradner Kogel | |
| Notch height | 258 m ↓ L219 at Galgegg | |
| Coordinates | 46 ° 53 '31 " N , 15 ° 54' 30" E | |
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| rock | basalt | |
| Age of the rock | 17 mya | |
| particularities | Classification LdSt. V.4a | |
The Gleichenbergs or Gleichenberger Kögel are two neighboring, extinct volcanoes in southern Styria , Austria. The two volcanic cones, the actual Gleichenberger Kogel ( 598 m ) and its secondary peak, the Bschaidkogel ( 563 m ) have almost the same shape and gave the spa town of Bad Gleichenberg its name.
Volcanism began in the Miocene around 17 million years ago (here the local Carpathian period ) when the African continental plate was pushed under the European plate , and lasted for 5 million years. Due to this violent tectonics, the rocks melted, the rising magma tore African rocks with them to the surface of the earth and thus formed the Gleichenberg volcanoes. You stood in a subtropical sea for a few million years ; the lower parts of the volcanic cones were buried in the course of time by deposits, so that today only their peaks protrude from the underground as double peaks. It belongs to the Styrian Vulkanland , a tourist name for the southeast of the Eastern Styrian hill country . This sedimentary area of the Graz Bay of the Paratethys Sea, from which some island mountains of volcanic origin protrude, was formed around the same time as the volcanoes formed. The mountains are likely to have protruded from the shallow sea as volcanic islands at least in the retreat stages of the sea during this time, the Badenium .
From tourist and natural history- geological associations, etc. a. the association for the promotion of the Styrian volcanic country , the volcanic chains of the region are made accessible through educational and hiking trails.
