Staufen im Breisgau
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Staufen im Breisgau is a German town in the Breisgau-Hochschwarzwald district of Baden-Württemberg. It had a population of approximately 8,300 in 2019.
Staufen Hauptstraße
Cracks at the historic Town Hall due to damage from geothermal drilling. To the left, a piece of fake tape reading Staufen darf nicht zerbrechen! (Staufen must not fall apart!), protesting the damage.
Anhydrite
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Anhydrite, or anhydrous calcium sulfate, is a mineral with the chemical formula CaSO4. It is in the orthorhombic crystal system, with three directions of perfect cleavage parallel to the three planes
Staufen im Breisgau
…identified as a drilling operation conducted in the summer and autumn of 2007 to provide geothermal heating to the city hall. The drilling perforated an anhydrite layer and caused high-pressure groundwater to come into contact with the anhydrite, which then began to expand. By 2010, some sections of town had risen…
Anhydrite, from Chihuahua, Mexico
Hand sample of gypsum and anhydrite from diapir caprock showing "chicken wire" texture.
Relief carving of an anhydrite kiln, made from a piece of anhydrite, by Ophelia Gordon Bell