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

Current clay potential in Germany
Part 6: Raw materials from the Jurassic system

»1a Palaeogeographic reconstruction of Central Europe at the time of the Lower Jurassic  [1]
»1a Palaeogeographic reconstruction of Central Europe at the time of the Lower Jurassic  [1]
»1b Palaeogeographic reconstruction of Central Europe at the time of the Middle Jurassic [1]
»1b Palaeogeographic reconstruction of Central Europe at the time of the Middle Jurassic [1]
»1c Palaeogeographic reconstruction of Central Europe at the time of the Upper Jurassic [1]
»1c Palaeogeographic reconstruction of Central Europe at the time of the Upper Jurassic [1]
»2 Geological transect of the Jurassic with assignment of locations Simplified model compiled at Dr. Krakow Rohstoffe GmbH (2017) Vereinfachtes Modell der Dr. Krakow Rohstoffe GmbH (2017)
»2 Geological transect of the Jurassic with assignment of locations
Simplified model compiled at Dr. Krakow Rohstoffe GmbH (2017) Vereinfachtes Modell der Dr. Krakow Rohstoffe GmbH (2017)
»3 Typical fossils of the Amaltheen Formation/Herford Lias basin Photo/Foto: Krakow (2017)
»3 Typical fossils of the Amaltheen Formation/Herford Lias basin
Photo/Foto: Krakow (2017)
»4 Thin-to thick-platy mudstones of the Amaltheen Formation/Herford Lias Basin Photo/Foto: Krakow (2017)
»4 Thin-to thick-platy mudstones of the Amaltheen Formation/
Herford Lias Basin
Photo/Foto: Krakow (2017)
»5 Argillaceous ironstone geodes of the Arieten Formation/Markoldendorf Basin Photo/Foto: Krakow (2017)
»5 Argillaceous ironstone geodes of the Arieten Formation/
Markoldendorf Basin
Photo/Foto: Krakow (2017)
»6 Pre-crushing in a screening and crushing excavator bucket/Herford Lias Basin Photo/Foto: Krakow (2017)
»6 Pre-crushing in a screening and crushing excavator bucket/
Herford Lias Basin
Photo/Foto: Krakow (2017)
»7 Weathering profile with Quaternary mud covering/Herford Lias Basin Photo/Foto: Krakow (2016)
»7 Weathering profile with Quaternary mud covering/Herford Lias Basin
Photo/Foto: Krakow (2016)
»8 At the Wellersen clay pit, the here 36-m-thick Arieten Formation is completely opened up/Markoldendorf Basin Photo/Foto: Krakow (2017)
»8 At the Wellersen clay pit, the here 36-m-thick Arieten Formation is completely opened up/Markoldendorf Basin
Photo/Foto: Krakow (2017)
»9 Extraction of weathered clay from the Amaltheen formation at Häger clay pit/Herford Lias Basin Photo/Foto: Krakow (2016)
»9 Extraction of weathered clay from the Amaltheen formation at Häger clay pit/Herford Lias Basin
Photo/Foto: Krakow (2016)
»10 Kaolin-containing Dogger sandstone at Grossschönbrunn open pit/Southern German Block Photo/Foto: Krakow (2010)
»10 Kaolin-containing Dogger sandstone at Grossschönbrunn open pit/Southern German Block
Photo/Foto: Krakow (2010)
»11 Selective extraction of thick clayey-sandy delta sequences of the Oxford stage at Ueffeln open pit/Gehn Photo/Foto: Krakow (2009)
»11 Selective extraction of thick clayey-sandy delta sequences of the Oxford stage at Ueffeln open pit/Gehn
Photo/Foto: Krakow (2009)
»12 Geological profile section of the Osnabrück Saddle and Ibbenbüren Carbon Horst with depiction of the Bramsche Instrusion in the deep underground of the Ueffeln open pit/Gehn Modified model compiled at Dr. Krakow Rohstoffe GmbH (2017) according to an image from DSK Anthrazit Ibbenbüren GmbH Modifiziertes Modell der Dr. Krakow Rohstoffe GmbH (2017) nach einer Abbildung der DSK Anthrazit Ibbenbüren GmbH
»12 Geological profile section of the Osnabrück Saddle and Ibbenbüren Carbon Horst with depiction of the Bramsche Instrusion in the deep underground of the Ueffeln open pit/Gehn
Modified model compiled at Dr. Krakow Rohstoffe GmbH (2017) according to an image from DSK Anthrazit Ibbenbüren GmbH Modifiziertes Modell der Dr. Krakow Rohstoffe GmbH (2017) nach einer Abbildung der DSK Anthrazit Ibbenbüren GmbH

Low-carbon Lias and Dogger clays are the prime-choice clays for the Northwest German clay brick and roofing tile plants. But the much sought-after weathered horizons are difficult to find and becoming increasingly scarce. Bituminous clay beds, on the other hand, exist in large thicknesses. Pyrophyllite slate from the Malm (Upper Jurassic) formed in a contact metamorphic process are regarded as a rarity across Europe and optimize firing behaviour.

1 Global geology and tectonics

After the Triassic, the Jurassic represents the second system in the Mesozoic. The Jurassic is covered by strata of the Cretaceous, which is the youngest system in the Mesozoic. The Jurassic began around 199.3 mill. years ago, and ended around 145.0 mill. years ago. Following the terrestrial-dominated sediments of the Germanic Triassic, the Jurassic is characterized especially by shelf sea sediments. At the beginning of the Jurassic, a shallow epicontinental sea with deposited archipelagos developed. Towards the end of the Jurassic, the sea withdrew back to the...

Find out more in

ZI 4/2017

Find out more in

ZI 4/2017

Ressort:  Technical Paper | Fachbeitrag
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