Rodderberg
The Rodderberg is an extinct volcano in the east of the municipality of Wachtberg near Bonn, Germany.[1] The last eruption was 250,000 years ago.
It is situated just above the Rhine valley. Together with the Drachenfels directly opposite, the Rodderberg narrows the Rhine valley. This gorge portion is the southern limit of the lowland-bay of Cologne.
The Rodderberg offers views to the Siebengebirge, the Rhine valley and up to the Cologne Cathedral, about 50 km away.
Geology
The Rodderberg detonated in a phreatomagmatic eruption about 250,000 years ago. This happened when the magmatic plume reached the groundwater level of the Rhine (about 50 m higher than today). After the explosion, the crater was filled with water that formed a maar of about 90 m depth.Script error: No such module "Unsubst". In the last 250,000 yearsScript error: No such module "Unsubst". this feature filled with dust and soil until it was filled up to today's level.[2]
The Rodderberg is now a small hill that has a shallow concave shape.
Script error: No such module "wide image".Script error: No such module "Check for unknown parameters".
References
<templatestyles src="Reflist/styles.css" />
- ↑ Ian Smalley (2020). Leonard Horner in Bonn 1831–1833, finding loess and being incorporated into Lyell's Loess Legion. Geologos 26 (2): 163–170 Script error: No such module "CS1 identifiers".
- ↑ Patrick Schläfli et al. (2023). New vegetation history reconstructions suggest a biostratigraphic assignment of the lowermost Rodderberg interglacial (Germany) to MIS 11. Quaternary Science Reviews 302: 107932 Script error: No such module "CS1 identifiers".
Script error: No such module "Check for unknown parameters".
Script error: No such module "Coordinates".