Potential field imaging of Palaeozoic orogenic structure in northern and central Europe

Banka, D.; Pharaoh, T. C.; Williamson, J.P.

doi:10.1016/s0040-1951(02)00345-1

Cited by 51 publications

(40 citation statements)

References 90 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Po ten tial field ev i dence in cludes grav ity and mag netic data (Królikowski and Petecki, 1995;Wonik et al, 2001;Banka et al, 2002;Petecki, 2008). Of par tic u lar im por tance are the mag netic anom aly maps ac cu rately re pro duc ing the struc ture and compo si tion of the crys tal line base ment un der the sed i men tary cover (Clark, 1997).…”

Section: Methodsmentioning

confidence: 61%

Basement structure of the Paleozoic Platform in Poland

Narkiewicz

Petecki

2017

View full text Add to dashboard Cite

1 Pol ish Geo log i cal In sti tute -Na tional Re search In sti tute, Rakowiecka 4, 00-975 Warszawa, Po land Narkiewicz, M., Petecki, Z., 2017. Base ment struc ture of the Pa leo zoic Plat form in Po land. Geo log i cal Quar terly, 61 (2): 502-520, doi: 10.7306/gq.XXXX The Pa leo zoic Plat form com prises the south west ern half of the Pol ish ter ri tory, sep a rated from the Pre cam brian East Eu ropean Plat form (EEP) by a NW-SE trending subvertical lithospheric-scale dis con ti nu ity -the Teisseyre-Tornquist Zone. In the pres ent study, the Pa leo zoic Plat form base ment is sub di vided based on geo log i cal and geo phys i cal ev i dence ac quired dur ing the last de cades, in clud ing deep seis mic re frac tion and re flec tion re sults, as well as grav ity, mag netic and magnetotelluric data. The units ad ja cent to the EEP, the Mid-Pol ish Do main (com pris ing the £ysogóry Block) and the Pom era nian Block, are char ac ter ized by a thinned three-layer EEP-type crys tal line crust (age 1.7-3.7 Gy). Their old est plat form cover is prob a bly com posed of thick Ediacaran syn-rift sed i men tary and vol ca nic rocks. Their west ern ex ten sion in the contig u ous Ger man and Bal tic area can be traced as far as the East Elbian Mas sif and Thor Su ture based mainly on mag netic anom aly pat terns. The Up per Silesian and Ma³opolska blocks lo cated in SE Po land are char ac ter ized by Cadomian (660-600 My) base ment over lain by the thick de formed Ediacaran foredeep de pos its. Whereas the units with the EEP-type base ment are in ter preted as prox i mal ter ranes dis placed along the EEP mar gin dur ing the late Early Pa leo zoic, the blocks with a Cadomian base ment are con ceived as ex otic ter ranes of a pos si ble Gondwanan prov e nance. All these ter ranes were accreted ul ti mately dur ing the fi nal, lat est Si lu rian stages of the Cal edo nian de for ma tion al though the ex act sce nario of the amal gam ation re mains hy po thet i cal. The Sudetic Do main in SW Po land is a col lage of dif fer ent crustal units jux ta posed ul timately in the Penn syl va nian (ca. 310 Ma) dur ing the fi nal ep i sodes of the Variscan Orog eny. Their north ern bound ary cor responds to the Rheic Su ture trace able in mag netic and grav ity anom a lies pat tern along the north ern mar gin of the Wolsztyn-Leszno High, and con tin u ing west wards along the Mid-Ger man Crys tal line High. The ar cu ate trace of the su ture in the NE is dextrally dis placed along the Odra Fault, and con tin ues south wards where it is mapped as the Moravian-Silesian Su ture.

show abstract

Section: Methodsmentioning

confidence: 61%

Basement structure of the Paleozoic Platform in Poland

Narkiewicz

Petecki

2017

View full text Add to dashboard Cite

show abstract

“…They also suggest the presence of a crustal keel underneath the TTZ. In the wider context of European geology, these results imply the location of a Caledonian tectonic suture (Thor Suture), which defines the site of collision Teisseyre-Tornquist Zone. Base map modified from several sources including Franke et al (1995), Pharaoh (1999) and Banka et al (2002) -CDF -Alpine-Carpathian Deformation Front; CDF -Caledonian Deformation Front; GF -Grójec Fault; KLF -Kraków-Lubliniec Fault; STZ -Sorgenfrei-Tornquist Zone; TTZ -Teisseyre-Tornquist Zone; VDF -Variscan Deformation Front between Avalonia and Baltica, not along the TTZ, but farther to the SW, in NE Germany and SW Poland. Another implication is the location of extensive Palaeozoic and Permo-Mesozoic sedimentary basins of western Poland over the stretched and deeply concealed margin of the Baltica paleocontinent.…”

Section: Introductionmentioning

confidence: 99%

On the nature of the Teisseyre-Tornquist Zone

Mazur

Krzywiec

Malinowski

et al. 2018

geol

View full text Add to dashboard Cite

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.

show abstract

“…1a). The territories in central-western Europe consist of various continental fragments that were subsequently rifted off the northern margin of Gondwana and accreted to the southwestern margin of the Precambrian Baltica during a number of orogenic events Pharaoh, 1999;Winchester and the PACE TMR Network Team, 2002;Banka et al, 2002). The TESZ contains two pronounced linear segments: the SorgenfreiTornquist Zone (STZ) in the northwestern part of the TESZ between Sweden and Denmark-Germany, and the TeisseyreTornquist Zone (TTZ) stretching from the Baltic Sea in the northwest to the Black Sea in the southeast.…”

mentioning

confidence: 99%

Upper mantle structure around the Trans-European Suture Zone obtained by teleseismic tomography

et al. 2015

View full text Add to dashboard Cite

Abstract. The presented study aims to resolve the upper mantle structure around the Trans-European Suture Zone (TESZ), which is the major tectonic boundary in Europe. The data of 183 temporary and permanent seismic stations operated during the period of the PASsive Seismic Experiment (PASSEQ) 2006-2008 within the study area from Germany to Lithuania was used to compile the data set of manually picked 6008 top-quality arrivals of P waves from teleseismic earthquakes. We used the TELINV nonlinear teleseismic tomography algorithm to perform the inversions. As a result, we obtain a model of P wave velocity variations up to about ±3 % with respect to the IASP91 velocity model in the upper mantle around the TESZ. The higher velocities to the east of the TESZ correspond to the older East European Craton (EEC), while the lower velocities to the west of the TESZ correspond to younger western Europe. We find that the seismic lithosphere-asthenosphere boundary (LAB) is more distinct beneath the Phanerozoic part of Europe than beneath the Precambrian part. To the west of the TESZ beneath the eastern part of the Bohemian Massif, the Sudetes Mountains and the Eger Rift, the negative anomalies are observed from a depth of at least 70 km, while under the Variscides the average depth of the seismic LAB is about 100 km. We do not observe the seismic LAB beneath the EEC, but beneath Lithuania we find the thickest lithosphere of about 300 km or more. Beneath the TESZ, the asthenosphere is at a depth of 150-180 km, which is an intermediate value between that of the EEC and western Europe. The results imply that the seismic LAB in the northern part of the TESZ is in the shape of a ramp dipping to the northeasterly direction. In the southern part of the TESZ, the LAB is shallower, most probably due to younger tectonic settings. In the northern part of the TESZ we do not recognize any clear contact between Phanerozoic and Proterozoic Europe, but further to the south we may refer to a sharp and steep contact on the eastern edge of the TESZ. Moreover, beneath Lithuania at depths of 120-150 km, we observe the lower velocity area following the boundary of the proposed paleosubduction zone.

show abstract

Potential field imaging of Palaeozoic orogenic structure in northern and central Europe

Cited by 51 publications

References 90 publications

Basement structure of the Paleozoic Platform in Poland

Basement structure of the Paleozoic Platform in Poland

On the nature of the Teisseyre-Tornquist Zone

Upper mantle structure around the Trans-European Suture Zone obtained by teleseismic tomography

Contact Info

Product

Resources

About