Structure of the Prague Basin: The deformation diversity and its causes (the Czech Republic)

Bulletin of geosciences

Röhlich P¹ 

关键词: structure;    Ordovician;    Silurian;    Devonian;    Variscan tectogenesis;    Prague Basin;    Barrandian;    Czech Republic;   

DOI  :  

来源: Czech Geological Survey

【 摘 要 】

Thepaperdealswiththediversityofdeformations,esp.faults,intheOrdoviciantotheDevoniandepositsofthePragueBasin,theirrelationstotheProterozoicbasement,anddrawssomeconclusionsaboutcausesofthisdiversity.Attentionispaidtotheeastern,deeperdownfoldedpartoftheBasin(PragueSynclinorium).Somelongitudinalfaults(LibeňThrusts,TetínThrust)areconfinedtothebasinfillingandareapparentlyduetothereleaseofstressesgeneratedduringfolding.Mostoffaults,however,arerootedintheProterozoicbasementandsomeofthemwereconnectedwithEarlyPalaeozoicsynsedimentarymovementsand/orvolcanism(PragueFault,TachloviceFault,TobolkaFault,etc.).Sometransversefaultsseparatesegmentshavingstructuresincompatibletooneanother.Thistestifiestothetransversefaultingsimultaneouswiththefoldingandtothebasementfracturesinfluencingthedeformationofthebasinfilling.ThedistinctSEvergencyoffoldsintheSilurian-DevonianofthesynclinoriumcanbeexplainedbytheunderthrustingofabasementblocktowardsNW.Otherwise,thetectonictransportinthesynclinoriumwasbilateralandtheverticalcomponentofdisplacementsprevailed.ThegeneraltectoniccharacterofthePragueSynclinoriumtestifiestoitsfullyautochthonousrelationtotheProterozoicbasement.

【 授权许可】

Unknown