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Extent of the Variscan externides interpreted along the experimental seismic profile GRUNDY 2003.
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Abstrakty
The question of the eastern extent of the Variscan externides in the Polish Lowlands is a subject of ongoing scientific debate. The key to resolve this problem is to provide a good seismic image of the pre-Permian strata. Unfortunately, the industrial seismic profiling brings sparse information from below the Zechstein, thus in 2003, a special seismic experiment called GRUNDY 2003 has been organised. The acquisition system was based on the deep seismic sounding equipment and was targeted at the recognition of Palaeozoic strata. The results in form of the 3D tomographic velocity field and the migrated depth section form the basis for the geological interpretation. Deduced geological model suggests the existence of two different geological media below the Permian strata. The likely interpretation is that it is the contact zone of the Variscan externides with their foreland. Obtained results are of a great importance for the hydrocarbons exploration perspectives.
Czasopismo
Rocznik
Tom
Strony
45--50
Opis fizyczny
wykr., bibliogr. 7 poz.
Twórcy
autor
autor
autor
autor
autor
autor
autor
autor
- Polskie Górnictwo Naftowe i Gazownictwo S.A., ul. Krucza 6/14, 00-537 Warszawa
Bibliografia
- 1.DADLEZ R., KOWALCZEWSKI Z. & ZNOSKO J. 1994 - Some key problems of the pre-Permian tectonics in Poland. Geol. Quart., 38, 169-190.
- 2.GRAD M., JENSEN S.L., KELLER G.R., GUTERCH A., THYBO H., JANIK T., TIIRA T., YILINIEMI J., LUOSTO U., MOTUZA G., NASEDKIN V., CZUBAW., GACZYŃSKI E., OERODA P., MILLER K.C., WILDE-PIÓRKO M., KOMMINAHO K., JACYNA J. & KORABLIOVA L. 2003a - Crustal structure of the Trans-European Suture Zone region along POLONAISE'97 Seismic Profile P4. J. Geoph. Res. 108, B11, doi: 10.1029/2003Jb002426.
- 3.GRAD M., ŠPIČÁK A., KELLER G. R., GUTERCH A., BRO M., HEGEDŰS E. & WORKING GROUP 2003b - SUDETES 2003 seismic experiment. Stud. Geophys. Geod., 47: 681-689.
- 4.GUTERCH A., GRAD M., KELLER G. R. & POLONAISE'97, CELEBRATION 2000, ALP 2002, SUDETES 2003 Working Groups 2004 - Huge contrasts of the lithospheric structure revealed by new generation seismic experiments in Central Europe. Prz. Geol., 52: 753-760.
- 5.HAJNAL Z., HEGEDŰS E., KELLER G. R., FÁNCSIK T., KOVÁCSCS. & CSABAFI R. 2004 - Low-frequency 3-D seismic survey of upper crustal magmatic intrusions in the northeastern Pannonianbasin of Hungary. Tectonophysics, 388: 239-252.
- 6.POŻARYSKI W., GROCHOLSKI A., TOMCZYK H.,KARNKOWSKI P. & MORYC W. 1992 - Mapa tektoniczna Polski w epoce waryscyjskiej. Prz. Geol., 40: 643-651.
- 7.ZELT C. A. & BARTON P. J. 1998 - Three-dimensional seismic refraction tomography: A comparison of two methods applied to data from the Faeroe Basin. J. Geophys. Res., 103: 7187-7210.
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Bibliografia
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bwmeta1.element.baztech-article-BUS2-0011-0024