Crustal-scale pop-up structure in cratonic lithosphere: DOBRE deep seismic reflection study of the Donbas fold belt, Ukraine

Maystrenko, Yuriy; Stovba, S.; Stephenson, Randell; Bayer, U.; Menyoli, Elive; Gajewski, Dirk; Hüebscher, C.; Rabbel, Wolfgang; Saintot, Aline; Starostenko, V. I.; Thybo, Hans; Tolkunov, Anatoliy

doi:10.1130/g19329.1

Cited by 84 publications

(64 citation statements)

References 12 publications

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“…Lithofacies were identified using outcrop sections, subsurface mine observations, and core samples and logs, and were refined by petrographic analysis of ~200 thin sections. Correlations between core logs and outcrop sections and descriptions of regional lithofacies patterns were made using all available biostratigraphy and regionally recognized marker beds (Aizenverg, 1979, Maystrenko et al, 2003. These regionally correlatable marker beds are named in stratigraphic sequence using capitalized Latin letters with consecutive Arabic numeral suffixes (e.g.…”

Section: Methodsmentioning

confidence: 99%

Sequence stratigraphy and onlap history of the Donets Basin, Ukraine: Insight into Carboniferous icehouse dynamics

Eros

Montañez

Osleger

et al. 2012

Palaeogeography, Palaeoclimatology, Palaeoecology

154

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The degree to which Permo-Carboniferous cyclothemic successions archive evidence for longterm variations in ice volume during the Late Paleozoic Ice Age is insufficiently resolved. Here we develop the sequence stratigraphy and onlap-offlap history for a 33-my interval of the Carboniferous using the U-Pb calibrated succession of the Donets Basin, Ukraine, in order to assess the relationship between sea-level, high-latitude changes in glacial extent, and climate. Integrated subsurface and outcrop data permit meter-scale correlation of 242 biostratigraphically constrained limestones and coals, and in turn individual cyclothems, across ~250 km of the Donets Basin. Rapid uniform subsidence and basinwide continuity of marker beds indicate Pennsylvanian deposition under relatively stable tectonic conditions. Three scales of sequences (avg. durations of ~140 ky, ~480 ky and 1.6 my) are recognized on the basis of stratigraphic stacking patterns and basinwide architecture of marine to terrestrial facies assemblages.The hierarchy of sequences and the geographic and stratigraphic positions of shifts in base-level sensitive facies across the Donets ramp permit the construction of an onlap-offlap history at a sub-400 ky scale. Major sea-level lowstands occur across the mid-Carboniferous boundary and during the early Moscovian. These lowstands coincide with glacial maxima inferred from highlatitude glacigenic deposits. The middle to late Pennsylvanian is characterized by a stepwise onlap, culminating in an earliest Gzhelian highstand, suggesting contraction of Carboniferous ice sheets prior to the initiation of Early Permian glaciation.The stratigraphic position of climate sensitive facies within individual Donets cyclothems indicates a turnover from seasonal sub-humid or semi-arid climate to everwet conditions during the late lowstand and maximum ice sheet accumulation. Comparison of the stratigraphic and aerial distribution of coals and evaporites in the Donets Basin with the onlap-offlap history further indicates everwet conditions during lowstands and inferred glacial maxima and drier climate during onlap and inferred ice sheet contraction at the intermediate (~0.8 to 1.6 my) and long (10 6 yr) time-scales. Taken together, the relationship between inferred climate and glacioeustasy suggests a likely teleconnection between high-latitude ice sheet behavior and low-latitude atmospheric dynamics.

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Section: Methodsmentioning

confidence: 99%

Sequence stratigraphy and onlap history of the Donets Basin, Ukraine: Insight into Carboniferous icehouse dynamics

Eros

Montañez

Osleger

et al. 2012

Palaeogeography, Palaeoclimatology, Palaeoecology

154

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“…The previous step using only Pg data leads merely to the upper crustal velocity model, but applying the Raylnvr inversion technique we can determine the whole crustal model. This method traces rays in 2-D layered media for rapid forward modelling and inversion of refraction/reflection traveltime data (Zelt and Smith, 1992;Zelt and Forsyth, 1994;Zelt and Barton, 1998;Grad et al, 2003;Maystrenko et al, 2003;Lyngsie et al, 2007). We perform a joint inversion of Pwave velocities and reflector depths in a layer-stripping manner.…”

Section: Reflection/refraction Events and Velocity Model Buildingmentioning

confidence: 99%

Crustal and upper mantle velocity structure in Yunnan, Southwest China

Zhang

Wang

2009

Tectonophysics

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Four wide-angle seismic profiles acquired in analogue form in the 1980's from Yunnan, Southwest China, are re-digitized and re-interpreted for a detailed P-wave velocity structure of the crust and lithospheric mantle. The results reveal that the crust can be divided roughly into upper, middle and lower crusts with bottom depths of 17-25, 26-33, and 33-56 km, respectively. The Moho depth varies from 56 km in the north of Yunnan to about 33 km in the southern part, and from 38-40 km in the west of Yunnan to 42 km in the eastern zone. The velocity anisotropy in the lower crust is of 4.4 %, in contrast with the very low values estimated for the upper-middle crust, which are close to 1.6%. This suggests that the surface deformation in the Yunnan area is decoupled from the lower crustal flow. The seismic velocity discrepancy along different azimuths in the lower crust and upper mantle beneath the profiling cross points leads to a flow regime in the north-south direction that agrees with contemporary tectonic deformation, and also provides evidence for the rotation of the lower crust-upper mantle medium around the east Himalayan foreland. High-velocity anomalies in the lower crust might be explained as intrusions of mantle material or remaining patches of ancient oceanic crust.

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“…In combination with extensive refraction-seismic data, providing information on the crustal and upper mantle velocity structure, and potential-field data, this has greatly advanced the understanding of the configuration and evolution of Europe's continental crust, and particularly of the transformation of orogenically destabilized crust into stabilized cratonic crust (e.g. Aichroth et al, 1992;ILIHA DSS Group, 1993;Guterch et al, 1999;Carbonell et al, 2000;Maystrenko et al, 2003;Thybo et al, 2003).…”

Section: Crustal-scale Reflection and Refraction Seismologymentioning

confidence: 99%

TOPO-EUROPE: The geoscience of coupled deep Earth-surface processes

Cloetingh¹,

Ziegler²,

Bogaard³

et al. 2007

Global and Planetary Change

142

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TOPO-EUROPE addresses the 4-D topographic evolution of the orogens and intra-plate regions of Europe through a multidisciplinary approach linking geology, geophysics, geodesy and geotechnology. TOPO-EUROPE integrates monitoring, imaging, reconstruction and modelling of the interplay between processes controlling continental topography and related natural hazards. Until now, research on neotectonics and related topography development of orogens and intra-plate regions has received little attention. TOPO-EUROPE initiates a number of novel studies on the quantification of rates of vertical motions, related tectonically controlled river evolution and land subsidence in carefully selected natural laboratories in Europe. From orogen through platform to continental margin, these natural laboratories include the Alps/Carpathians-Pannonian Basin System, the West and Central European Platform, the Apennines-Aegean-Anatolian region, the Iberian Peninsula, the Scandinavian Continental Margin, the East-European Platform, and the Caucasus-Levant area. TOPO-EUROPE integrates European research facilities and know-how essential to advance the understanding of the role of topography in Environmental Earth System Dynamics. The principal objective of the network is twofold. Namely, to integrate national research programs into a common European network and, furthermore, to integrate activities among TOPO-EUROPE institutes and participants. Key objectives are to provide an interdisciplinary forum to share knowledge and information in the field of the neotectonic and topographic evolution of Europe, to

show abstract

Crustal-scale pop-up structure in cratonic lithosphere: DOBRE deep seismic reflection study of the Donbas fold belt, Ukraine

Cited by 84 publications

References 12 publications

Sequence stratigraphy and onlap history of the Donets Basin, Ukraine: Insight into Carboniferous icehouse dynamics

Sequence stratigraphy and onlap history of the Donets Basin, Ukraine: Insight into Carboniferous icehouse dynamics

Crustal and upper mantle velocity structure in Yunnan, Southwest China

TOPO-EUROPE: The geoscience of coupled deep Earth-surface processes

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