Posidonia Shale
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The Posidonia Shale geologically known as the Sachrang Formation, is an Early Jurassic geological formation of southwestern and northeast Germany, northern Switzerland, northwestern Austria, southern Luxembourg and the Netherlands, including exceptionally well-preserved complete skeletons of fossil marine fish and reptiles.
Posidonia Shale (Posidonienschiefer) Outcrop
Posidonia slate - outcrop of the Black Jura near Hetzles
The former marl pit of Hondelage, NW Germany. At the bottom of the image there is an 8 m long stretch of Posidonia Shale exposed.
Friedrich August von Quenstedt a German Mineralogist who studied the jurassic strata along Germany, including the Black Shales of the Posidonia Shale.
Aalen
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Aalen is a former Free Imperial City located in the eastern part of the German state of Baden-Württemberg, about 70 kilometres (43 mi) east of Stuttgart and 48 kilometres (30 mi) north of Ulm. It is the seat of the Ostalbkreis district and is its largest town. It is also the largest town in the Ostwürttemberg region. Since 1956, Aalen has had the status of Große Kreisstadt. It is noted for its many half-timbered houses constructed from the 16th century through the 18th century.
Panoramic view from the Aalbäumle (14. January 2022)
Aerial view of the district of Unterkochen (the town centre is partly covered and in the background), the Aalen lowlands well perceptible in the back
The Roman fort's excavated foundation walls