IMPLICATIONS OF TECTONIC SUBSIDENCE MODELS FOR CRUSTAL STRUCTURE BENEATH THE MID-POLISH TROUGH

R A STEPHENSON, R DADLEZ, M NARKIEWICZ, Randell Stephenson

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Abstract

Tectonic subsidence analysis of the preserved and reconstructed stratigraphy of the Polish Basin indicates an initial Late Permian-Early Triassic (255-241 Ma) syn-rift phase of development with a subsequent extensional rejuvenation during the Late Jurassic (ca. 157-152 Ma). Forward modelling of the subsidence data, in view of existing geophysical interpretations which show the presence of a deep Moho and a very high seismic velocity lower crustal layer beneath the Mid-Polish Trough (MPT), suggest that Permo-Mesozoic basin development may be related at least in part to the intrusion of mantle material into and densification of the lower crust rather than exclusively to crustal extension and thinning.

Original languageEnglish
Pages (from-to)289-297
Number of pages9
JournalStudia Geophysica et Geodaetica
Volume39
Issue number3
Publication statusPublished - 1995

Keywords

  • SEDIMENTARY BASINS
  • RIFTING
  • POLAND

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