Sonnborn limestone area
| Sonnborn limestone area | |||
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| Systematics according to | Handbook of the natural spatial structure of Germany | ||
| Greater region 1st order | Low mountain range threshold | ||
| Greater region 2nd order | Rhenish Slate Mountains | ||
| Main unit group | 33 → Süderbergland |
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| About main unit | 337 → Bergisch-Sauerland lowlands |
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| 4th order region (main unit) |
337 1 → Bergisch-Märkisches hill country |
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| 5th order region | 337 1 .3 → Wuppertal Valley |
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| Natural space |
337 1 .37 → Sonnborn limestone area |
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| Geographical location | |||
| Coordinates | 51 ° 15 ′ 21 ″ N , 7 ° 9 ′ 1 ″ E | ||
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| Local area | Sonnborn | ||
| local community | Wuppertal | ||
| state | North Rhine-Westphalia | ||
| Country | Germany | ||
The Sonnborn limestone area is a natural spatial unit with the order number 337 1 .37 in the urban area of the Bergisch city of Wuppertal ( Sonnborn district ) within the Wuppertal valley . The depression consists of heavily folded mass limestone from the Central Devon, which has been eroded and karstified by heavy rainfall .
The limestone area rises from the lower surfaces on the Wupperknie near Hammerstein (height at 130 m), which consist of gravel deposits , to the north in stages to high limestone plateaus that reach up to 200 m in height. These limestone plateaus are divided into individual plateaus by side valleys and dry valleys . Further north and south, steep slopes rise to high ridges and plateaus, which consist of greywacke and slate . In the east, the Nützenberger Querriegel delimits the Sonnborn limestone area from the Elberfeld limestone basin . In the west the limestone area merges into the Vohwinkel depression .
In the limestone area there are numerous sinkholes , which are filled with Middle Miocene sands . The limestone area is covered with residential buildings and commercial areas in the Sonnborn district of Wuppertal. Numerous traffic routes, including the federal freeway 46 with the Sonnborner Kreuz , the federal freeway 535 , the federal road 7 , the federal road 228 , the state road 418 and the state road 74 , as well as the Elberfeld – Dortmund railway line cross it.