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Laacher See

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Laacher See
Loch Laach
View o the caldera
Laacher See Loch Laach is located in Germany
Laacher See Loch Laach
Laacher See
Loch Laach
Location in Germany
LocationAhrweiler, Rhineland-Palatinate
Coordinates50°25′N 7°16′E / 50.417°N 7.267°E / 50.417; 7.267Coordinates: 50°25′N 7°16′E / 50.417°N 7.267°E / 50.417; 7.267
TeepVolcanic caldera loch
Primary inflowsNone
Primar ootflowsFulbert-Stollen (canal)
Basin kintrasGermany
Max. lenth1.964 km (1.220 mi)
Max. weenth1.186 km (0.737 mi)
3.3 km2 (1.3 sq mi)
Average deepth31 m (102 ft)
Max. deepth51 m (167 ft)
103,000,000 m3 (0.025 cu mi)
Shore lenth17.3 km (4.5 mi)
Surface elevation275 m (902 ft)
1 Shore lenth is nae a weel-defined meisur.

Laacher See (leeterally: Loch Laach; German pronunciation: [ˈlaːxɐ ˈzeː]) is a volcanic caldera loch locatit in Rhineland-Palatinate, Germany.[1][2]

Topografic map o the area aroond the Laacher See.
Map o regions aroond the Laacher See.
Dock o rental boats in the Laacher See.

The diameter is 2 km (1.2 mi), an it is locatit 24 km (15 mi) from Koblenz, 8 km (5.0 mi) from Andernach an the Rhine river, an 37 km (23 mi) from Bonn. Its last volcanic eruption, which wis a Plinian eruption, wis aroond 11,000 B.C., wi a Volcanic Explosivity Index (VEI) o 6, havin the same magnitude as the Plinian eruption o Munt Pinatubo in 1991. It is pairt o the Eifel region, an the East Eifel Volcanic Region, which wis formed after the collision o the African an Eurasian continents millions o yeirs ago.[3][4][5] Bubbles o odorless CO2 gas called mofettas are released from the loch, which means that the volcanae is dormant. Tae the west o the loch is the Maria Laach Aibey, built in 1092 by Henry II o Laach, Coont o the Hoose o Luxembourg.

Bubbles of odorless CO2 gas called mofettas on the sootheastren shore o the Laacher See.
View o the Maria Laach Aibey.
Panorama o the Laacher See.


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  1. Oppenheimer, Clive (2011). Eruptions that Shook the World. Cambridge University Press. pp. 216–217. ISBN 978-0-521-64112-8.
  2. de Klerk, Pim; et al. (2008). "Environmental impact of the Laacher See eruption at a large distance from the volcano: Integrated palaeoecological studies from Vorpommern (NE Germany)". Palaeogeography, Palaeoclimatology, Palaeoecology. 270 (1–2): 196–214. Bibcode:2008PPP...270..196D. doi:10.1016/j.palaeo.2008.09.013.
  3. Bogaard, Paul van den (1995). "40Ar/39Ar ages of sanidine phenocrysts from Laacher See Tephra (12,900 yr BP): Chronostratigraphic and petrological significance". Earth and Planetary Science Letters. 133 (1–2): 163–174. Bibcode:1995E&PSL.133..163V. doi:10.1016/0012-821X(95)00066-L.
  4. "Geo-Education and Geopark Implementation in the Vulkaneifel European Geopark/Vulkanland Eifel National Geopark". The Geological Society of America. 2011. Archived frae the original on 13 Januar 2019. Retrieved 9 Mairch 2022.
  5. Reinig, Frederick; Wacker, Lukas; Jöris, Olaf; Oppenheimer, Clive; Guidobaldi, Giulia; Nievergelt, Daniel; et al. "Precise date for the Laacher See eruption synchronizes the Younger Dryas". [Measurements] firmly date the [Laacher See eruption] to 13,006 ± 9 calibrated years before present (BP; taken as AD 1950), which is more than a century earlier than previously accepted.

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