... chert from the Lausitz area ...

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The large fluvial deposits as well as the widespread glacial moraines in Lower Lusatia (Saxony, Brandenburg) are potential sites for collecting fossiliferous cherts. Mainly since Miocene /Pliocene, some rivers, including the ancient Elbe, drained the flat northern slopes of a mountainous region in the south, carrying with them huge amounts of debris whose deposition made them change their courses repeatedly. As a result of several advances of the continental ice sheet, the fluvial deposits got mixed up with glacial matter from the north. Petrified wood known as Dadoxylon, Psaronius, Stigmaria, Tempskya and cherts including silicified peat can be found everywhere in the vast areas covered with deposits. They are thought have come mainly from Bohemia and to a lesser extent possibly from Doehlen basin and from the Riesengebirge region (southwest Poland). Gravel pits and tilled fields along the ancient courses of the Elbe river seem to be the most promising sites for collecting. Rare samples of well preserved cherts have been found on fields located on the Ortrand-Groeden end moraine ascribed to Saale I glaciation.

text: W.GEHLERT/Lauchhammer, photographs: H.SAHM/Dresden, R.KRETZSCHMAR/Chemnitz

 

D-047-10, maggot stone

 
 

 

 
   

D-047-09, chert with gymnosperm roots

 

D-085-06, chert with roots and leaves

 
   

D-116-12, chert with ?conifer - leaves

 

D-066-03, chert with "zipper structure"

 

Z-037-01, fossiliferous chert

 

Z-008-05, chert with "bean structure"

 

agat-like chert

 
           

observations

palaeozoic chert with spherical objects exhibitions on fossiliferous cherts      

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