U–Pb and Ar–Ar geochronology of anorogenic granite magmatism of the Mazury complex, NE Poland

Dörr, Wolfgang; Bełka, Zdzisław; Marheine, Dirk; Schastok, Janina; Valverde-Vaquero, Pablo; Wiszniewska, Janina

doi:10.1016/s0301-9268(02)00119-5

Cited by 57 publications

(35 citation statements)

References 26 publications

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“…Two large granitoid bodies of rapakivi-type are present in our study area: the Riga Pluton in western Latvia, and the Mazury Complex in the Kaliningrad District of Russia and NE Poland (Rämö et al, 1996;Dörr et al, 2002).…”

Section: Janutyte Et Al: Traces Of the Crustal Units And The Uppementioning

confidence: 93%

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Traces of the crustal units and the upper-mantle structure in the southwestern part of the East European Craton

et al. 2014

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Abstract. The presented study is a part of the passive seismic experiment PASSEQ 2006-2008, which took place around the Trans-European Suture Zone (TESZ) from May 2006 to June 2008. The data set of 4195 manually picked arrivals of teleseismic P waves of 101 earthquakes (EQs) recorded in the seismic stations deployed to the east of the TESZ was inverted using the non-linear teleseismic tomography algorithm TELINV. Two 3-D crustal models were used to estimate the crustal travel time (TT) corrections. As a result, we obtain a model of P -wave velocity variations in the upper mantle beneath the TESZ and the East European Craton (EEC). In the study area beneath the craton, we observe up to 3 % higher and beneath the TESZ about 2-3 % lower seismic velocities compared to the IASP91 velocity model. We find the seismic lithosphere-asthenosphere boundary (LAB) beneath the TESZ at a depth of about 180 km, while we observe no seismic LAB beneath the EEC. The inversion results obtained with the real and the synthetic data sets indicate a ramp shape of the LAB in the northern TESZ, where we observe values of seismic velocities close to those of the craton down to about 150 km. The lithosphere thickness in the EEC increases going from the TESZ to the NE from about 180 km beneath Poland to 300 km or more beneath Lithuania. Moreover, in western Lithuania we find an indication of an uppermantle dome. In our results, the crustal units are not well resolved. There are no clear indications of the features in the upper mantle which could be related to the crustal units in the study area. On the other hand, at a depth of 120-150 km we indicate a trace of a boundary of proposed palaeosubduction zone between the East Lithuanian Domain (EL) and the West Lithuanian Granulite Domain (WLG). Also, in our results, we may have identified two anorogenic granitoid plutons.

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Section: Janutyte Et Al: Traces Of the Crustal Units And The Uppementioning

confidence: 93%

“…As the granitoid massif lies on the edge of the study area where resolution is quite poor, we cannot assert its effects on our results. Both the Mazury Complex and the Riga Pluton are of rapakivi type and have formed 1.6-1.5 Ga (Rämö et al, 1996;Dörr et al, 2002).…”

Section: Traces Of the Crustal Unitsmentioning

confidence: 99%

Traces of the crustal units and the upper-mantle structure in the southwestern part of the East European Craton

et al. 2014

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“…Claesson et al 1995;Andersson 1997;Claesson and Kresten 1997;Lundström et al 2002) and intrusions of the Mazury AMCG complex in Poland (Dörr et al 2002) probably are unrelated to Danopolonian orogenic activity (cf. Å häll et al 2000).…”

Section: The Onset Of Magmatism Of the Danopolonian Eventmentioning

confidence: 99%

“…Rämö and Haapala 1995;Andersson 1997;Dörr et al 2002) and 1.27-1.25 Ga diabase dykes and sills of the Central Scandinavian Dolerite Group (Gorbatschev et al 1979;.…”

Section: Introductionmentioning

confidence: 99%

Mesoproterozoic (1.47–1.44 Ga) orogenic magmatism in Fennoscandia; Baddeleyite U–Pb dating of a suite of massif-type anorthosite in S. Sweden

Brander¹

2007

Int J Earth Sci (Geol Rundsch)

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The Jönköping Anorthositic Suite (JAS) in S. Sweden has characteristics typical for (Proterozoic) massiftype anorthosites. The interstitial liquid of these plagioclase-porphyritic rocks solidified at 1,455 ± 6 Ma, as determined by U-Pb isotope analysis of baddeleyite. The JAS developed during a regional 1.47-1.44 event in Fennoscandia that generated widespread mafic magmatism (basalts, and diabase dykes and sills) in the north and emplacement of felsic plutons in the south. The event of 1.47-1.44 Ga magmatism in Fennoscandia largely coincides in age with dynamic high-grade metamorphism in SW Sweden and was probably related to convergent activemargin processes during the Danopolonian orogeny.

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“…Sub se quent in ves ti ga tions of fun da men tal im por tance for the knowl edge about the Pre cambrian crys tal line base ment have been per formed in the next years (e.g., Dörr et al, 2002;Wiszniewska et al, 2002;Bagiñski et al, 2007;Wil liams et al, 2009;Krzemiñska et al, 2009a;Demaiffe et al, 2013). These re sults, sup ple mented with the new est geo chem i cal, iso tope and U-Pb dat ing stud ies of borehole sam ples, with the mag netic and grav ity data used to set geo log i cal bound aries, en abled com pi la tion of a novel geo logic map of the crys tal line base ment in the Pol ish part of the East Euro pean Plat form (Krzemiñski et al, 2014;Krzemiñska et al, in press).…”

Section: East European Cratonic Provincementioning

confidence: 99%

A new magnetic anomaly map of Poland and its contribution to the recognition of crystalline basement rocks

Petecki

Rosowiecka

2017

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A new mag netic anom aly map of Po land and its con tri bu tion to the rec og ni tion of crys talline base ment rocks. Geo log i cal Quar terly, 61 (4): 934-945, doi: 10.7306/gq.1383 Mag netic to tal field mea sure ments ac quired in Po land be tween 1974 and 2011 have been com piled in a new dig i tal da ta base that pro vides a com plete pic ture of mag netic anom a lies of the coun try. The data com pi la tion and fur ther pro cess ing pro cedures used to cre ate the mag netic anom aly da ta base and maps that ac com pany this ar ti cle are briefly sum ma rized. The reduced-to-the-pole and pseudogravity anom aly maps were com puted to ac cu rately lo cate anom a lies above their caus ative bod ies as well as to sim plify anom aly pat terns and em pha size prin ci pal mag netic do mains within the base ment. An in ter preta tion of the mag netic maps re veals a lot of mag netic base ment prov inces and do mains in di cat ing base ment di vi sion into blocks and struc tural el e ments, which are im por tant for un der stand ing the re gional tec tonic set ting of Po land.Key words: mag netom etry, Earth's to tal mag netic field map, pseudogravity, crys tal line base ment, Po land.

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U–Pb and Ar–Ar geochronology of anorogenic granite magmatism of the Mazury complex, NE Poland

Cited by 57 publications

References 26 publications

Traces of the crustal units and the upper-mantle structure in the southwestern part of the East European Craton

Traces of the crustal units and the upper-mantle structure in the southwestern part of the East European Craton

Mesoproterozoic (1.47–1.44 Ga) orogenic magmatism in Fennoscandia; Baddeleyite U–Pb dating of a suite of massif-type anorthosite in S. Sweden

A new magnetic anomaly map of Poland and its contribution to the recognition of crystalline basement rocks

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