Evolution of the SE segment of Mid-Polish Trough in Jurassic and Early Cretaceous

• Autorzy: Gutowski J. , Wybraniec S.
• Konferencja: International Congress on the Jurassic System (7 ; 06-18.09.2006 ; Kraków, Poland)
• Języki publikacji: EN

Abstrakty

EN

Facies and palaeo-thickness analysis of the Jurassic and Early Cretaceous sediments (Gutowski et al. 2005, 2006) combined with interpretation of gravity and magnetic images have allowed to construct a regional model for the syndepositional tectonic activity of the sub-Mesozoic basement 7thInternational Congress on the Jurassic System, Abstract Volume, Session 1: Geodynamics and evolution of different areas of the peri-Carpathian (SE) segment of the Mid-Polish Trough (MPT) during Jurassic through Early Cretaceous times (Fig. 1A). Taking into account: (1) location of the Jurassic and Lower Cretaceous palaeo-thickness gradients, (2) location of facies contrasts, (3) location of tectonic lineaments on the gravity and magnetic images, a tectonic map of main basement fault zones was constructed. Results from the analogue models (Gutowski & Koyi 2006a, b) helped to understand activity of the inferred fault zones and its impact onto synsedimentary fault systems developed within the Jurassic and Early Cretaceous sedimentary infill. They also helped to restore extensional tectonic structures that existed in the axial part of the SE segment of the MPT before its Late Cretaceous-Palaeogene inversion and almost total removal of the syn-extensional sedimentary infill. Sedimentary records show that the NW segment of the MPT, located north-westwards from the Holy Cross Fault Zone (HCF), formed since the Permian whereas its SE, peri-Carpathian segment did not open and accumulate sediments until the latest Early to Middle Jurassic (e.g. Kutek 2001). The Holy Cross Fault Zone played a role of a major tectonic boundary that limited south-eastward propagation of the MPT. This was achieved by the sinistral strike-slip movement along the HCF (Fig. 1B). The SE segment of the MPT started to open in the latest Early Jurassic (Fig. 1C). During the Late Jurassic the depocenter of the MPT was shifted to this segment. This was probably connected with reorientation of the strike-slip movement along the HCF from sinistral to dextral (Fig. 1D). The northeastern boundary of the SE segment of the MPT was controlled by the SW margin of the East-European Craton whilst, similarly as in the NW segment of the MPT (Krzywiec 2006), its SW bounding normal fault zones were complicated by an interfering system of en-echelon fault zones oriented obliquely to the main axis of the MPT (Fig. 1A, D, E). These strike-slip basement fault zones are generally W-E oriented and are not parallel to the WNW-ESE running Holy Cross Fault Zone and to the major basement strike-slip fault zones inferred within the northwestern part of the MPT (Krzywiec 2006). It is therefore assumed that direction of extension, evolved from WNW-ESE oriented (as postulated recently for the Permian-Mesozoic basin by Mazur et al. 2005) in Early, Middle Jurassic and probably also in Oxfordian and Early Kimmeridgian times, to W-E (WSW-ENE) oriented in Late Kimmeridgian to Barremian times, respectively (Fig. 1B -E). This process was supposedly driven by opening and rifting of the Silesian Basin which likely joined the SE segment of MPT south-eastwards of Rzeszów (Fig. 1E). The northern margin of this basin most probably coincides with the gravity-induced lineament running E-W about 20-40 km southward from the present-day extent of the Outer Carpathian front, beneath the nappes of the Silesian Unit (Fig. 1E). Consequently, it can be assumed that during the Late Jurassic and Early Cretaceous the SE Mid-Polish Trough was included into the system of marginal Tethys basins.

Słowa kluczowe

EN

facies; palaeothickness analysis; gravity images; magnetic images; extensional basin; palaeotectonic model

• Wydawca: Państwowy Instytut Geologiczny - Państwowy Instytut Badawczy
• Czasopismo: Volumina Jurassica
• Rocznik: 2006
• Tom: Vol. 4, no. 1
• Strony: 48--51
• Opis fizyczny: Bibliogr. 7 poz.

Twórcy

autor

Gutowski J.

autor

Wybraniec S.

• Polish Geological Institute, ul. Rakowiecka 4, PL-00950 Warszawa, Poland,

Bibliografia

• 1. Gutowski J., Popadyuk I. V. and Olszewska B. 2005. Late Jurassic - Earliest Cretaceous evolution of the epi-continental sedimentary basin of SE Poland and Western Ukraine. Geological Quarterly, 49, 1: 45-52.
• 2. Gutowski J., Popadyuk I. V., Urbaniec A., Złonkiewicz Z., Gliniak P., Krzywiec P., Maksym A. and Wybraniec S. 2006. Architecture, evolution and hydrocarbon potential of the Late Jurassic - Early Cretaceous carbonate platform in SE Poland and W Ukraine. Volumina Jurassica, 4, 7th International Congress on the Jurassic System, Abstracts volume: this issue.
• 3. Gutowski J. and Koyi H. A. 2006a. Influence of oblique basement strike slip faults on the Mesozoic evolution of the SE segment of the Mid-Polish Trough. Basin Research. (in press)
• 4. Gutowski J. and Koyi H. A. 2006b. Jurassic-Early Cretaceous development of the peri-Carpathian (SE) segment of the Mid-Polish Trough in the light of results of analogue models. Volumina Jurassica, 4, 7th International Congress on the Jurassic System, Abstracts volume: this issue.
• 5. Krzywiec P. 2006. Triassic-Jurassic evolution of the Pomeranian segment of the Mid-Polish Trough - basement tectonics and subsidence patterns. Geological Quarterly. (in press)
• 6. Kutek J. 2001. The Polish Permo-Mesozoic Rift Basin. In: Peri-Tethys Memoir 6: Peri-Tethyan Rift/Wrench Basins and Passive Margins. Mémoires Museum Historie Naturelle, 186: 213-236.
• 7. Mazur S., Scheck-Wenderoth M. and Krzywiec P. 2005. Different modes of the Late Cretaceous-Early Tertiary inversion in the North German and Polish basins. International Journal of Earth Sciences (Geologische Rundschau), 94: 782-798.