EurGeol Dr. rer. nat. Lutz Krakow and Dipl.-Geol. Franziska Schunke

Current clay potential in Germany | Part 4: Raw materials from the Buntsandstein group/
Trias system

»1 Palaeogeographic position of the Central European Basin at the time of the Buntsandstein, modified model from: [3]
»1 Palaeogeographic position of the Central European Basin at the time of the Buntsandstein, modified model from: [3]
»2 Grouping and facies areas of the Central European Basin at the time of the Buntsandstein, model from: [4]
»2 Grouping and facies areas of the Central European Basin at the time of the Buntsandstein, model from: [4]
»3 The epitome of alternation: Thousands of alternating strata in the Bernburg formation/Waldecker Land (2016) Photo/Foto: Krakow
»3 The epitome of alternation: Thousands of alternating strata in the Bernburg formation/Waldecker Land (2016)
Photo/Foto: Krakow
»4 Random reduction bleaching or the symbol of the spirals as a mystic message?/Waldecker Land (2016) Photo/Foto: Krakow
»4 Random reduction bleaching or the symbol of the spirals as a mystic message?/Waldecker Land (2016)
Photo/Foto: Krakow
»5 Characteristic lenticular and flaser bedding/Waldecker Land (2016) Photo/Foto: Krakow
»5 Characteristic lenticular and flaser bedding/Waldecker Land (2016)
Photo/Foto: Krakow
»6 Wave ripple structure as an indication of moving water/Typus-Region Bernburg (2016) Photo/Foto: Krakow
»6 Wave ripple structure as an indication of moving water/Typus-Region Bernburg (2016)
Photo/Foto: Krakow
»7 One of innumerable muscovitic mica deposits at the top of narrow alternations/Waldecker Land (2016) Photo/Foto: Krakow
»7 One of innumerable muscovitic mica deposits at the top of narrow alternations/Waldecker Land (2016)
Photo/Foto: Krakow
»8 Drying cracks as indications of temporary drying out of the sedimentary basin in semi-arid climate/Waldecker Land (2016) Photo/Foto: Krakow
»8 Drying cracks as indications of temporary drying out of the sedimentary basin in semi-arid climate/Waldecker Land (2016)
Photo/Foto: Krakow
»9 Geological standard section of the Buntsandstein with assignment of sites (simplified model from Dr. Krakow Rohstoffe GmbH, 2016)
»9 Geological standard section of the Buntsandstein with assignment of sites (simplified model from Dr. Krakow Rohstoffe GmbH, 2016)
»10 Formation of salt clays in sporadic playa lakes in the arid to semi-arid climate regions, model from: [4]
»10 Formation of salt clays in sporadic playa lakes in the arid to semi-arid climate regions, model from: [4]
»11 Upper Röt with the border to the overlying Muschelkalk/Egge Hills (2013) Photo/Foto: Krakow
»11 Upper Röt with the border to the overlying Muschelkalk/Egge Hills (2013)
Photo/Foto: Krakow
»12 Massive gypsum in strata and on joints. The sudden demise of the Hölle Brickworks at the beginning of the 1970s, Eichsfeld (1988) Photo/Foto: Krakow
»12 Massive gypsum in strata and on joints. The sudden demise of the Hölle Brickworks at the beginning of the 1970s, Eichsfeld (1988)
Photo/Foto: Krakow
»13 Ready for delivery to the brickworks: On-site precrushed and homogenized marly argillaceous rock from the Bernburg formation/Typus-Region Bernburg (2016) Photo/Foto: Krakow
»13 Ready for delivery to the brickworks: On-site precrushed and homogenized marly argillaceous rock from the Bernburg formation/Typus-Region Bernburg (2016)
Photo/Foto: Krakow
»14 A weathered deposit of international calibre, Hirschau-Schnaittenbach kaolin district (2016) Photo/Foto: Amberger Kaolinwerke Eduard Kick GmbH & Co. KG
»14 A weathered deposit of international calibre, Hirschau-Schnaittenbach kaolin district (2016)
Photo/Foto: Amberger Kaolinwerke Eduard Kick GmbH & Co. KG

Argillaceous rocks from the lithostratigraphic group of the Buntsandstein are some of the most important raw materials in German clay brick and tile industry. They constitute the raw materials basis of significant clay backing brick and roofing tile factories. Weathered deposits from the Middle Buntsandstein represent kaolin raw materials of international renown. In this paper, the geological background and aspects on use in the clay brick and tile industry are examined more closely.

1 Global geology and tectonics

The Buntsandstein is the lowest lithostratigraphic group of the Germanic Trias, which is characterized by a time of dominance of solid land and constitutes the first system in the Mesozoic. The time span of Buntsandstein began around 252.5 million years ago and ended following a relatively short time in geological terms around 246.5 million years ago [1]. The horizontal border to the Zechstein/Permian system is lithologically unsharp within sandy-conglomerate stratigraphic sequences. On the other hand, the occurrence of epicontinental dolomitic limestone beds...

Find out more in

ZI 8/2016

Find out more in

ZI 8/2016

Ressort:  Technical Paper | Fachbeitrag
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