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Wyszukujesz frazę "Strefa Tornquist-Teisseyre" wg kryterium: Temat


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Tytuł:
Strefa Teisseyre’a-Tornquista : dawne koncepcje a nowe dane
Teisseyre-Tornquist Zone : evolving approaches and new data
Autorzy:
Narkiewicz, Marek
Petecki, Zdzisław
Powiązania:
https://bibliotekanauki.pl/articles/2075897.pdf
Data publikacji:
2019
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Strefa Tornquist-Teisseyre
pola potencjalne
sondowanie sejsmiczne
modelowanie grawitacyjne
skorupa kratoniczna
platforma paleozoiczna
Teisseyre-Tornquist Zone
potential fields
deep seismic sounding
gravity modelling
cratonic crust
Paleozoic Platform
Opis:
Concepts prevailing among the Polish geoscientists during the last decades assumed that the Teisseyre-Tornquist Zone is a major tectonic discontinuity separating the pre-Ediacaran East European Craton (EEC) crust from the Paleozoic Platform composed of terranes accreted during the Caledonian and Variscan orogenic processes. The recent interpretations of the TTZ by Mazur and collaborators, basedon gravity modelling and new PolandSPAN seismic reflection data, revive earlier ideas of the EEC crust extending to the western Poland and NE Germany. These authors propose that the TTZ is in fact a Sveconorwegian (ca. 1 Ga old) collisional suture marked by a crustal keel expressed as the Pomeranian and Kuiavian gravity lows in northern and central Poland. However, the present review of seismic data available, as well as a closer evaluation of the modelling results, do not confirm the keel/suture concept. On the other hand, the idea of the TTZ as an Early Paleozoic tectonic discontinuity is supported by several lines of evidence, including a strong regional magnetic gradient and a contrast in the crustal structure. The latter is revealed by seismic velocity distribution from the refraction data, in the results of magnetotelluric profiling and in recent seismicity patterns. The interpretation of the PolandSPAN data attempting to prove the continuity of the cratonic crust and its Ediacaran-Lower Paleozoic cover across the TTZ appears questionable. At the same time the POLCRUST-01 deep seismic profile in SE Poland documents that the zone is associated with the subvertical Tomaszów Fault. The basement top displacement by ca. 0,5 km and associated change in its slope are related to the fault whose deep crustal roots are further documented by reflectivity patterns in the lower crust. The recent modelling exercise by Krzywiec and collaborators aimed at questioning the thick-skinned nature of this fault does not present compelling results, being based on a poorly constrained geological model. The general conclusion from the present review is that the recently published data either support or at least do not contradict the concept of the TTZ as a tectonic zone separating the continuous EEC crust from several allochtonous blocks - mostly proximal Early Paleozoic terranes to the south-west. Thelithospheric memory of the TTZ echoed in successive stages of its reactivation in different intra-plate tectonic regimes - transpressive Variscan, mostly extensional or transtensional Permian through Early Cretaceous, compressional Late Cretaceous and finally Neogene, related to the Carpathian orogenic compression.
Źródło:
Przegląd Geologiczny; 2019, 67, 10; 837--848
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wawrzyniec i Henryk Teisseyre’owie
Wawrzyniec Teisseyre and Henryk Teisseyre
Autorzy:
Miecznik, J. B.
Powiązania:
https://bibliotekanauki.pl/articles/2075288.pdf
Data publikacji:
2015
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
strefa Teisseyre-Tornquist
płyta podolska
geologia Karpat
geologia Sudetów
wrocławska szkoła tektoniki
Teisseyre-Tornquist Zone
Podolian Plate
geology of the Carpathians
geology of the Sudetes
Wrocław school of tectonics
Opis:
The Teisseyre family is a very meritorious family in Polish geology. Senior Wawrzyniec Teisseyre (1860–1939), cartographer, tectonicist, petroleum geologist and paleontologist, first determined the course of the SW boundary of the East European Platform, subsequently confirmed by magnetic studies of German geophysicist A.J.H. Tornquist. This important continental-scale feature has a character of deep fractures and is called today the Teisseyre-Tornquist Zone. Wawrzyniec's son, Henryk Teisseyre (1903–1975), was an eminent Carpathian geologist. After World War II, he was the co-founder of the Wroc³aw centre of Polish geology and the creator of Wroc³aw school of tectonics. Significant roles in the geology were played by Henryk's sons: prematurely died Juliusz (1933–1991) and Andrzej Karol (1938–1991). Henryk's nephew, Roman Teisseyre (born 1929), is a world-class seismologist, researcher in physics of the Earth interior.
Źródło:
Przegląd Geologiczny; 2015, 63, 2; 86--92
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
O nowych rozwiązaniach tektonicznych w „Atlasie geologicznym Polski”
On the new tectonic solutions in “Geological Atlas of Poland”
Autorzy:
Aleksandrowski, P.
Mazur, S.
Powiązania:
https://bibliotekanauki.pl/articles/2075682.pdf
Data publikacji:
2017
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Kraton wschodnioeuropejski
platforma paleozoiczna
orogen waryscyjski
strefa Teisseyre-Tornquist
zapadlisko kaledońskie
terrany
TESZ
architektura crustalna
dane sejsmiczne
dane grawitacyjne
dane magnetyczne
East European Craton
Palaeozoic Platform
Variscan Orogen
Teisseyre-Tornquist Zone
Caledonian Foredeep
terranes
crustal architecture
seismic data
gravity data
magnetic data
Opis:
Authorial comprehensive comments and explanations are given to some of the interpretations applied in the tectonic part of the newly published Geological Atlas of Poland (Nawrocki, Becker, 2017) that considerably change the hitherto generally accepted concepts. It should be, however, admitted that most of those "new’" solutions were already proposed in the past by other workers as hypotheses that could not have been tested in the then state of knowledge on Poland’s deep geology and scientific tools at hand. This has now changed with abundant new data obtained with modern seismic techniques and advanced methods of potential field modelling. Using those data, we justify the reasons for, among others, a significant eastward shifting the front of the Variscan Orogen in Poland andfor the accompanying change in position of the division line between the Precambrian and Palaeozoic platforms. We also show the rationale for accepting a far-reaching southwestward extent of the East European Craton’s crystalline basement below the Palaeozoic Platform and for reinterpretation of the Teisseyre-Tornquist Zone’s nature, together with the question of early Palaeozoic terranes in the TESZ and the situation of the Caledonian foredeep at the SW margin of the East-European Craton.
Źródło:
Przegląd Geologiczny; 2017, 65, 12; 1499--1510
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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