Late Carboniferous thin-skinned compressional deformation above the SW edge of the East European craton as revealed by seismic reflection and potential field data—Correlations with the Variscides and the Appalachians

Krzywiec, Piotr; Mazur, Stanisław; Gągała, Łukasz; Kufrasa, Mateusz; Lewandowski, Marek; Malinowski, M.; Buffenmyer, Vinton

doi:10.1130/2017.1213(14)

Cited by 20 publications

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“…2; Mazur et al 2015, Grad & Polkowski 2016, Mikołajczak 2016, Krzywiec et al 2017a). The shear wave (S) velocity distribution in the upper mantle obtained on the basis of seismic tomography proves that the TTZ coincides with a much wider transition zone between the high-velocity domain underneath the EEC and the low-velocity domain beneath the Palaeozoic Platform (Zhu et al 2015).…”

Section: Geophysical Image Of the Teisseyre-tornquist Zonementioning

confidence: 99%

“…The geophysical and geological arguments presented herein confirm the hypothesis (Mazur et al 2016a(Mazur et al , 2016b, according to which the TTZ was formed in the Precambrian and it was not the boundary of Baltica in the early Palaeozoic. They refer to the results of geophysical modelling using gravimetric and magnetic data and to the seismic interpretation of selected profiles of the PolandSPAN™ survey (Krzywiec et al 2014), which have been published in recent years (Mazur et al 2015, 2016a, 2016b, 2017, Malinowski 2016, Krzywiec et al 2017a). …”

Section: Introductionmentioning

confidence: 99%

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On the nature of the Teisseyre-Tornquist Zone

Mazur

Krzywiec

Malinowski

et al. 2018

geol

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Abstract:The Teisseyre-Tornquist Zone (TTZ) is the longest European tectonic and geophysical lineament extending from the Baltic Sea in the NW to the Black Sea in the SE. This tectonic feature defines a transition zone between the thick crust of the East European Craton (EEC) and the thinner crust of the Palaeozoic Platform to the SW. The TTZ is evident from the seismic data as a perturbation of the Moho depth as well as from magnetic and gravity anomaly maps and heat flow distribution. For over a century, the TTZ has been considered a fossil plate boundary of the EEC corresponding to the limit of early Palaeozoic palaeocontinent Baltica. The results of quantitative interpretation of gravity and magnetic data, integrated with data from the new reflection seismic profiles crossing the TTZ, indicate the continuation of the Precambrian basement of the EEC and its lower Palaeozoic cover toward the SW underneath the Palaeozoic Platform. Potential field modelling also suggests the occurrence of a crustal keel underneath the TTZ. These results imply the location of a Caledonian tectonic suture, marking the site of the collision between Avalonia and Baltica, not along the TTZ, but farther SW, in NE Germany and SW Poland. Consequently, the extensive Permo-Mesozoic sedimentary basin of western Poland is established above the attenuated margin of the Baltica palaeocontinent.

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Section: Geophysical Image Of the Teisseyre-tornquist Zonementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On the nature of the Teisseyre-Tornquist Zone

Mazur

Krzywiec

Malinowski

et al. 2018

geol

Self Cite

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“…Our ob ser va tions do not con firm the de for ma tion mech anism of the Si lu rian com plex pro posed by Pelc (1999) and Krzywiec (2007Krzywiec ( , 2009, who con sider the ge om e try and complex in ter nal struc ture of the KFZ to be a prod uct of ei ther a ductile flow of shale, cre at ing a kind of shale diapir, or a duc tile defor ma tion driven by thin-skinned tec ton ics, called mushwad (Thomas, 2001), as pro posed by Kufrasa and Krzywiec (2015) and Krzywiec et al (2017). The drill core from the Kock IG 1 bore hole pro vides ev i dence that the shale com plex is cut by a dense net work of slick en sides that in di cate a fric tion-con trolled de for ma tion.…”

Section: Discussion Over Tectonic Concepts Of the Kock Fault Zonementioning

confidence: 99%

“…2). Ac cord ing to the most re cent in ter pre ta tions re gard ing the po si tion of the front of the Variscan Orogen in Po land (Aleksandrowski and Bu³a, 2017;Krzywiec et al, 2017) the KFZ rep re sents a lo cal boundary be tween the folded and thrusted and undeformed parts of the Variscan fore land (Fig. 1).…”

Section: Introductionmentioning

confidence: 88%

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The Kock Fault Zone as an indicator of tectonic stress regime changes at the margin of the East European Craton (Poland)

Tomaszczyk¹,

Jarosiński²

2017

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2 Pol ish Geo log i cal In sti tute -Na tional Re search In sti tute, Rakowiecka 4, 00-975 Warszawa, Po land Tomaszczyk, M., Jarosiñski, M., 2017. The Kock Fault Zone as an in di ca tor of tec tonic stress re gime changes at the mar gin of the East Eu ro pean Craton (Po land). Geo log i cal Quar terly, 61 (4): 908-925, doi: 10.7306/gq.1380 In te grated tec tonic in ter pre ta tion of seis mic data and core sam ples from bore holes in the vi cin ity of the Kock Fault Zone (KFZ) al lowed us to iden tify sev eral tec tonic de for ma tion events that were re spon si ble for cre at ing its com plex struc ture. The KFZ is an ex am ple of a me chan i cally weak re gional-scale tec tonic struc ture that ac cu mu lated de for ma tion over hun dreds of mil lions of years and there fore is a good in di ca tor of stress re gime changes in a broader area. The KFZ is here re garded as a com bi na tion and su per po si tion of two ge net i cally and tem po rally dif fer ent faults: the older Kock Fault, which is an in verted nor mal fault, and the youn ger, low-an gle Kock Thrust. The first, Si lu rian stage of KFZ evo lu tion oc curred in a ten sional stress re gime that gave rise to the ac ti va tion of a deeply rooted nor mal-slip pre cur sor to the Kock Fault. Sub se quently, this fault under went in ver sion dur ing the Late Famennian com pres sive/transpressive event. In the Early Car bon if er ous, the tec tonic stress re gime changed into ten sion/transtension, lead ing to ex tru sion of ba salt magma and abun dant mineralisation in the vicin ity of the in verted Kock Fault, fol lowed by tec toni cally re laxed sed i men ta tion of Car bon if er ous strata. The de po si tion was ter mi nated by a compressional event at the end of the Westphalian. Con trac tion re sulted in the for ma tion of the low-an gle Kock Thrust de coup led in Si lu rian shale that cut across the up per part of the Kock Fault and dis placed it to wards the NE, over the East Eu ro pean Craton fore land.

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Variscan Cycle

Simancas¹

2019

Regional Geology Reviews

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Late Carboniferous thin-skinned compressional deformation above the SW edge of the East European craton as revealed by seismic reflection and potential field data—Correlations with the Variscides and the Appalachians

Cited by 20 publications

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On the nature of the Teisseyre-Tornquist Zone

On the nature of the Teisseyre-Tornquist Zone

The Kock Fault Zone as an indicator of tectonic stress regime changes at the margin of the East European Craton (Poland)

Variscan Cycle

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