Lower Palaeozoic evolution of the 

northeast German Basin/Baltica borderland

McCann, Tom

doi:10.1017/s0016756897007863

Cited by 21 publications

(4 citation statements)

References 45 publications

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“…In summary, the regional dependence in lithology and thickness of sediments is related to the tectonic factors, particularly in the western part of the basin; the zone of strong Caledonian Orogeny influence. Its moving front caused subsidence of the foredeep and subsequently, enabled sedimentation of thick deposits (Maletz et al, 1997;McCann, 1998;Poprawa et al, 1999). These processes were associated with magmatic intrusions of syenites, pyroxenites and diabases.…”

Section: Fig 1 Surface Relief Of Crystalline Basement Rocks Of the mentioning

confidence: 99%

Geochemical characteristics of organic matter in the Lower Palaeozoic rocks of the Peribaltic Syneclise (Poland)

Skręt

Fabiańska

2009

Geochem. J.

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Organic matter occurring in Lower Palaeozoic rocks of variable lithology was investigated for its origin, depositional environment and thermal maturity. Samples from nine boreholes located in the Polish part of the Peribaltic Syneclise were collected for performing Rock-Eval Analysis, palynological investigation for Thermal Alteration Index (TAI), solvent extraction, preparative layer chromatography (PLC) and gas chromatography-mass spectrometry (GC-MS) of aliphatic and aromatic compound fractions. It was found that kerogen belongs to either type I or commonly, to type II. It derives from variable, planktonic and planktonic-bacterial primary organic matter deposited in dysoxic environments in the eastern part of the Syneclise and in anoxic/suboxic conditions in the western and central parts. Organic matter is in the thermal evolution stage from late diagenesis to advanced metagenesis. Correlation of biomarker parameters, TAI and Rock-Eval results show that the thermal maturity of organic matter falls into three regional groups, increasing from the north-east to the south-west along the crystalline basement of the Eastern European Platform. The organic matter contained in Ordovician and Cambrian sediments of the western part of the Syneclise is overmature, reaching metagenesis. This is most probably related to the activity of the Teisseyre-Tornquist Zone, where the Baltica and Eastern Avalonia paleocontinents collided during the Late Ordovician. It is also reflected in the profiles by elevated values of aromatic hydrocarbon and sulphur compound parameters, which show the highest levels of thermal maturity for organic matter present in the sediments of the Ordovician and Lower Silurian. Local influence of igneous intrusions on organic matter is also visible in changes in thermal maturity values at the direct contact with diabase dykes.

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Section: Fig 1 Surface Relief Of Crystalline Basement Rocks Of the mentioning

confidence: 99%

Geochemical characteristics of organic matter in the Lower Palaeozoic rocks of the Peribaltic Syneclise (Poland)

Skręt

Fabiańska

2009

Geochem. J.

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“…The SD is bounded to the south by the uplifted intrabasinal NE-Mecklenburg-Vorpommern High. During Devonian and Lower Carboniferous times the study area formed the southern passive margin of the newly established Old Red Continent and was characterized by continental and shallow marine sedimentation (Lindert 1994;McCann 1996McCann , 1998McCann , 1999. In Upper Carboniferous times a subduction zone developed along the Variscan Deformation Front (VDF) with oceanic crust being subducted beneath the continental Variscides (Gast 1988).…”

Section: Regional Geologymentioning

confidence: 99%

“…Previous work on the Rotliegend successions of the northern margin of the NEGB, however, was mainly based on well data and focused on lithostratigraphical aspects (e.g. Helmuth 1968;Helmuth and Su Èssmuth 1993;Katzung 1988;Lindert et al 1990;McCann 1998;Wegner 1972). Thus, the precise geometry and the sedimentary architecture of the deposits are poorly constrained, complicating the detailed reconstruction of the tectono-sedimentary evolution within the region.…”

Section: Introduction and Databasementioning

confidence: 99%

Tectono‐sedimentary evolution of the northernmost margin of the NE German Basin between uppermost Carboniferous and Late Permian (Rotliegend)

et al. 2001

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The tectono-sedimentary evolution of the Rotliegend deposits of the northernmost margin of NE German Basin (NEGB) has been analysed on the basis of detailed sedimentary logs of 300 m of core material together with the re-evaluation of 600 km of seismic lines. Three distinct phases were recognized. During the initial Phase I, basin geometry was largely controlled by normal faulting related to deep-seated ductile shearing leading to a strong asymmetric shape, with a steep fault-controlled eastern margin and a gently, dipping western margin. The results of forward modelling along a cross-section ®t the basin geometry in width and depth and reveal a footwall uplift of c. 1000 m. Adjacent to the steep faults, local sedimentation of Lithofacies Type I was con®ned to non-cohesive debris¯ow-dominated alluvial fans, whereas the gently dipping western margin was dominated by alluvial-cone sedimentation.During the post-extensional period (Phase II), cooling of the lithosphere generated additional accommodation space. The sediments of Lithofacies Type II, comprising mainly clast-supported conglomerates, are interpreted as braided ephemeral stream¯ow-surge deposits. Tectonic quiescence and an increase in¯ood events resulting from wetter climate led to progradation of this facies over the entire region. At the end of this period, the accommodation space was almost completely ®lled resulting in a level topography.Phase III was controlled by the thermal-induced subsidence of the southerly located NEGB in post-Illawarra times. The formerly isolated region tilted towards the SW, thus forming the northern margin of the NEGB during uppermost Havel and Elbe Subgroup times. The sediments of Lithofacies Type III were divided into a marginal sandstone-dominated environment and a ®ner-grained facies towards the SW. The former consists of poorly-sorted coarse-grained sandstones of a proximal and medial ephemeral stream oodplain facies. The latter comprise mud¯at ®nes and ®ne-grained distal ephemeral stream deposits. The end of the tectonosedimentary evolution is marked by the basinwide Zechstein transgression.

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“…The tectonic regime during the Silurian was characterized by convergence along the western margin of the East European Craton. Plate reconstructions suggest that East Avalonia began to move towards Baltica in the middle Ordovician [ Torsvik et al , 1996; McCann , 1998], initiating closure of the intervening Tornquist Sea [ McCann , 1998]. This convergence is commonly associated with subduction of the oceanic plate beneath Baltica [ Abramovitz et al , 1998; Poprawa et al , 1999; Lazauskienë et al , 2002], although the polarity of subduction remains a source of contention [e.g., Giese and Koppen , 2001].…”

Section: Introductionmentioning

confidence: 99%

Mantle flow modeling of the anomalous subsidence of the Silurian Baltic Basin

Daradich

Pysklywec

Mitrovica

2002

Geophysical Research Letters

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[1] Recent reconstructions of the Silurian Baltic Basin indicate a long-wavelength component of sediment deposition. This deposition extends over 400 km beyond basins predicted on the basis of supracrustal loading in the region; it has been suggested that the discrepancy may be due to dynamic topography associated with mantle flow linked to Silurian plate subduction under Baltica. We test this suggestion using mantle convection simulations, and find that dynamic topography is capable of reconciling the anomalous far-field deposition. These simulations constrain the paleo-dip of the subduction to 40°-60°, with the range reflecting an uncertainty in the location of the paleo-trench. We furthermore demonstrate that this mantle loading component provides 40 -85% of the reconstructed near-field deposition. This result indicates that the slab-induced mantle flow mechanism is a potentially important contributor to the development of the foreland basin, and that previous estimates of the 'orogenic' (i.e., supracrustal) load associated with plate convergence may have been overestimated.

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Lower Palaeozoic evolution of the northeast German Basin/Baltica borderland

Cited by 21 publications

References 45 publications

Geochemical characteristics of organic matter in the Lower Palaeozoic rocks of the Peribaltic Syneclise (Poland)

Geochemical characteristics of organic matter in the Lower Palaeozoic rocks of the Peribaltic Syneclise (Poland)

Tectono‐sedimentary evolution of the northernmost margin of the NE German Basin between uppermost Carboniferous and Late Permian (Rotliegend)

Mantle flow modeling of the anomalous subsidence of the Silurian Baltic Basin

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