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The basal complex here consists of Lower Devonian clay slate, sandstone and greywacke (Siegen tier / Herdorf layers), almost entirely covered by maar tuffs. Particularities The Pulvermaar is like a picture from storybooks: It is the best preserved maar in the Eifel. The cone is entirely filled with water and surrounded by an almost closed tuff ridge (max. height approx. 45 m). It is also the maar lake with the largest expanse of water and greatest depth in the Eifel and one of the deepest lakes in Germany! In the tuff pit at the southern inner ridge of the maar cone the tuff ridge layers are 10 m high. Looking from the bottom, the first 8 m consist of an alternating sequence of coarse (especially slate fragments of various sizes) and fine layers (ash). They were deposited by turbulent ground streams of approx. 200° (glowing clouds) coming from the cone right after the explosion. The upper 2 m consist of fine, even layers of ash which later rained out from the air. To the south, directly at the bank path, one can see a basaltic path in the ridge. It probably pushed through coming from the Römerberg, through the maar tephra (pyroclastic deposits).

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Ortsgemeinde Gillenfeld
Ortsgemeinde, Am Markt 5
54558 Gillenfeld
Phone: (0049) 6573 720


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