Booser Doppelmaar

The Doppelmaar from the east, seen from the Booser Eiffel Tower (2004)

Booser Doppelmaar, aerial photo (2016)

The Booser Doppelmaar consists of two silted up maars that are now depicted as flat hollows in the area. They are located in the area of ​​the local community Boos (belongs to the Verbandsgemeinde Vordereifel ), a few hundred meters west of its locality in the district Boos. The two maars formed 10,150 to 14,160 years ago and belong to the Quaternary volcanic field of the Vulkaneifel . In terms of natural space, it is located in the south of the Hohe-Acht-Bergland (which belongs to the natural spatial main unit of the Eastern High Eifel ), about 7.8 km south (more precisely about south-and-a-half-west ) of the summit of the Hohe Acht .

The maars

The two Maare form large, by tuff walls surrounded circular boiler, are the running on a west-southwest-northeast-line and so the variscan brushing follow the substrate. The west-southwest maar has a diameter of about 700 m and is between 30 and 60 m deep, the east-north-east is between 650 and 700 m and has a depth of 50 to 87 m. The two hollows are very humid, so there are still places that have a permanent water surface. The water areas were previously used as fish ponds, but they later silted up and served as meadows and fields. Today there is a fish pond again in the west-southwest maar, the Booser Weiher. In the vicinity of the maars there are tuff pits in which the volcanic tuffs that formed when the maars erupted were mined.

Formation and rocks

The volcanism in the Eifel began about 600,000 years ago and led to the emergence of numerous volcanic forms. Probably the last eruption that led to the formation of the Ulmen Maar was around 11,000 years ago. In this time frame, the Booser Maare are among the most recent formations in the Vulkaneifel. The dates made to rocks of the crater lakes as well as in organic matter carried out C ¹⁴ -Datierungen only allow a determination of the age to 14,160 years before present for Eastern Maar to. The tuffs, on which an age of 10,150 years was determined, could not be clearly assigned to either of the two maars.

The tuffs contain basalt - bombs with surrounding rock and large olivine crystals. The tuffs consist partly only of igneous crystals (crystal tuffs ) and contain fragments of Wehrlite and Syenite . Lava channels have penetrated the tuff in some places . In the immediate area of ​​the Booser Doppelmaar there are a total of eight slag volcanoes that were formed more or less simultaneously around 35,000 years ago. A lava flow flowed westward from one of these volcanic cones, and the flow reached the valley of the Nitz .

Nature reserve and volcano park station

The two maars are located in the “Booser Maar” nature reserve, which is one of the largest nature reserves in Rhineland-Palatinate with 152 and 157.7136 hectares, respectively  . The Booser Eiffel Tower, built on the Schneeberg (on the wall on the east side of the east-northeast maar), is located in the nature reserve .

At the same time, they form a station in the volcano park (in the Mayen-Koblenz district ) of VULKANPARK GmbH with its headquarters in Koblenz .

literature

• Wilhelm Meyer: Geology of the Eifel. Schweizerbart'sche Verlagbuchhandlung, Stuttgart 1986, ISBN 3-510-65127-8 .

Individual evidence

1. ↑ Map with natural spatial units drawn (turquoise the Hohe-Acht-Bergland , blue the Elzbachhöhen , which also belong to the Central Eastern High Eifel ) in a map server of the Ministry for the Environment, Agriculture, Food, Viticulture and Forests Rhineland-Palatinate . Accessed and received on May 7, 2015.
2. ↑ DVG excursion 2006 to the Booser Doppelmaar ( Memento from February 12, 2013 in the web archive archive.today )
3. ↑ § 2 paragraph 1 of the Ordinance on the nature reserve "Booser Maar" Mayen-Koblenz on 14.08.2000 , published in the World Wide Web presence Landscape Information System of Nature Protection Administration of Rhineland-Palatinate the Ministry of Environment, Agriculture, Food, Wine and Forestry Rheinland-Pfalz . Accessed and received on May 7, 2015.
4. ↑ Extract from Osiris Rhineland-Palatinate to NSG-7137-004 Booser Maar ( memento from March 8, 2016 in the Internet Archive ) in a WWW-Presence Rhineland-Palatinate '. Accessed and received on May 7, 2015.

Web links

• The Booser Doppelmaar and its creation . In: boos-eifel.de  - Web presence of the local community Boos . Created May 1, 2006, accessed and received May 11, 2015.
• Hubert Schmitt: Booser Maar nature reserve . In: boos-eifel.de  - Web presence of the local community Boos .
• Crater tour - 3900 m long circular route around the Booser Doppelmaar - Article 1 on this in boos-eifel.de , the web presence of the local community Boos and Article 2 on this in the web presence of the Verbandsgemeinde Vordereifel .
• Booser Doppelmaartour  - Eifel dream path of "project offices Songlines" the Rhein-Mosel-Eifel-Touristik (REMET) - Tourism purpose association of the district Mayen-Koblenz .
• Booser Doppelmaar  - station in the volcano park (in the district of Mayen-Koblenz ) of VULKANPARK GmbH with headquarters in Koblenz , (route green).

Remarks

1. ↑ Vulkaneifel in the sense of a natural historical area or a region, not in the sense of a natural spatial unit.

Coordinates: 50 ° 18 ′ 45 ″  N , 6 ° 59 ′ 52 ″  E