Basement correlation across the southernmost Baltic Sea: Geochemical and geochronological evidence from onshore and offshore deep drill cores, northern Poland

Krzemińska, Ewa; Johansson, Åke; Krzemiński, Leszek; Wiszniewska, Janina; Williams, Ian S.; Petecki, Zdzisław; Salwa, Sylwester

doi:10.1016/j.precamres.2021.106300

Cited by 7 publications

(4 citation statements)

References 65 publications

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“…5). These zircons have 207 Pb/ 206 Pb dates ranging from 1144 to Kornfält 1993Kornfält , 1996Čečys et al 2002;Čečys 2004;Obst et al 2004;Krzeminska et al 2021). Johansson et al (2016) showed that the Bornholm granitoids and gneisses are ferroan, potassic rocks with features typical of A-type granitoids, and • 33 Age of the Christiansø granite, Ertholmene, Denmark attempt to remove potentially older zircons from the 'magmatic' population in sample BH19-1, and some of those zircons could represent potentially inherited zircon mineral grains (xenocrysts/restite) that lost large amounts of Pb during incorporation into the host magma.…”

Section: Discussionmentioning

confidence: 99%

An Eocene conger eel (Teleostei, Anguilliformes) from the Lillebælt Clay Formation, Denmark

Carnevale¹,

Schwarzhans²,

Schrøder³

et al. 2022

bgsd

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A conger eel (Anguilliformes, Congridae) is described from the lower Lutetian concretionary nodules of the Lillebælt Clay Formation exposed at Trelde Næs, eastern Jutland, based on two partially complete articulated cranial skeletons. One of the cranial specimens exhibits an otolith void from which a cast was taken, used by Schwarzhans (2007) to describe the extinct Pseudoxenomystax treldeensis, which is placed herein within the new genus Smithconger gen. nov. Smithconger treldeensis (Schwarzhans, 2007) is characterized by well-developed lateral processes on the frontals, supraoccipital crest absent, sphenotic spine rather large, anteriorly pointed and exposed on the flattened surface of the skull roof, otic bullae considerably reduced, maxilla almost straight and distally pointed, maxillary and dentary teeth numerous and arranged in multiple rows, dentary with slightly convex ventral profile, opercle with smooth posterior margin and subopercle short. The otoliths of Smithconger treldeensis show high dorsal rim, broad and deep dorsal depression, no ventral furrow, sulcus straight, shallow, centrally positioned with anteriorly reduced colliculum, and ostial channel at anterior tip of colliculum short, not reaching the predorsal rim. The otolith-based species Bathycongrus waihaoensis Schwarzhans, 2019 from the Kaiatan (Bartonian/Priabonian) of New Zealand is also assigned to the genus Smithconger. Smithconger is tentatively referred to the congrid subfamily Congrinae due to the lack of hypohyals in the hyoid bar. This new Eocene genus of conger eel shows a certain degree of similarity with the extant Bassanago. The diversity and relationships of other Eocene congrids is also briefly discussed.

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Section: Discussionmentioning

confidence: 99%

An Eocene conger eel (Teleostei, Anguilliformes) from the Lillebælt Clay Formation, Denmark

Carnevale¹,

Schwarzhans²,

Schrøder³

et al. 2022

bgsd

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“…The larg est con trast is seen to the E and NE, and this may be partly re lated to the su per im posed mag matic in tru sions of Carbon if er ous and Mesoproterozoic age, re spec tively. To the NE the prom i nent pos i tive anom a lies are caused by Mg-diorites to gran ites of the Pomerania-Blekinge Belt of vol ca nic arc af fin ity (Krzemiñska et al, 2021).…”

Section: Previous Workmentioning

confidence: 99%

“…Ac cord ing to Bogdanova et al (2015) the belt may con tinue south wards to north ern Po land. The hy po thet i cal TIB-1 in tru sive rocks in the PGL area would be sep a rated from the south ern most out crops of the TIB rocks in south Swe den by the dis tinct Pomorze-Blekinge Do main (Krzemiñska et al, 2017(Krzemiñska et al, , 2021. The base ment of Pomerania and the ad join ing Bal tic Sea to the NW of the Dobrzyñ Do main dif fers from typ i cal TIB-1 rocks in dis play ing per va sive de for ma tion and is thus sim i lar to the de formed Blekinge bed rock in SE Swe den (Krzemiñska et al, 2021).…”

Section: Alternative Interpretationsmentioning

confidence: 99%

“…The hy po thet i cal TIB-1 in tru sive rocks in the PGL area would be sep a rated from the south ern most out crops of the TIB rocks in south Swe den by the dis tinct Pomorze-Blekinge Do main (Krzemiñska et al, 2017(Krzemiñska et al, , 2021. The base ment of Pomerania and the ad join ing Bal tic Sea to the NW of the Dobrzyñ Do main dif fers from typ i cal TIB-1 rocks in dis play ing per va sive de for ma tion and is thus sim i lar to the de formed Blekinge bed rock in SE Swe den (Krzemiñska et al, 2021). The iso lated oc cur rence of this hy pothet i cal PGL-re lated TIB batholith is in ac cor dance with the discon tin u ous na ture of the TIB out crops in Scan di na via (Fig.…”

Section: Alternative Interpretationsmentioning

confidence: 99%

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The Pomerania Gravity Low at the East European Craton margin – a granitic batholith or a Paleoproterozoic impact structure?

NARKIEWICZ,

PETECKI

2024

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As so ci ate Ed i tor: Jacek Szczepañski The Pomerania Grav ity Low is a reg u lar large-am pli tude, oval anom aly of dis put able or i gin lo cated at the East Eu ro pean Craton mar gin. In the past it has been in ter preted as a Pro tero zoic crustal keel or an Early Pa leo zoic/Perm ian-Me so zoic depocentre. The or i gin of the anom aly has been re con sid ered based on a re in ter pre ta tion of pre vi ous po ten tial fields, seismic and magnetotelluric data and re cent gravimetric mod el ling re sults. New al ter na tive in ter pre ta tions are pro posed and discussed, namely a fel sic in tru sion re lated to the Transscandinavian Ig ne ous Belt and a large im pact struc ture dat ing to ~1.6-1.8 Ga. The data as sem bled, to gether with re gional com par i sons, make the im pact or i gin seem more prob a ble. Nev erthe less, pro longed ero sion, deep burial and a meta mor phic over print ham per test ing of this hy poth e sis, e.g., through find ing im pact ejecta or shock-af fected min er als.

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A new A-type granitoid occurrence in southernmost Fennoscandia: geochemistry, age and origin of rapakivi-type quartz monzonite from the Pietkowo IG1 borehole, NE Poland

et al. 2023

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Rapakivi-type quartz monzonite and the underlying dark-grey granodiorite from the Pietkowo IG1 borehole, in the Polish part of southernmost Fennoscandia have been investigated using whole-rock geochemistry, Sm–Nd isotope geochemistry and U–Pb zircon dating. The quartz monzonite was emplaced at 1495–1491 Ma, although slightly older zircon cores (antecrysts) of 1513 Ma imply a two-stage crystallization. The geochemical similarities with Mazury Complex granitoids, their metaluminous and alkali-calcic nature, elevated contents of F, Ga and high-field-strength-elements (HFSE), indicate that the Pietkowo IG1 rapakivi-type quartz monzonite is an ‘A-type’ granitoid. The presence of magnetite and titanite indicates crystallization under oxidizing conditions. The rock is classified as A2 sub-type, and the Nb/Y ratio implies a within-plate setting. The dark-grey granodiorite, dated to 1813 Ma, has a calc-alkaline character, typical of a volcanic-arc environment. Initial whole rock εNd values range between -2.9 and -3.3 for the rapakivi-type quartz monzonite and from -1.0 to + 1.1 for the dark-grey granodiorite. We suggest that the A-type Pietkowo IG1 rapakivi-type quartz monzonite was generated from the dark-grey granodiorite via partial melting at middle to lower crustal levels. The most plausible ascent route for the quartz monzonite was via lithospheric-scale weakness zones, between the eastern margin of the Mazowsze Domain and Belarus-Podlasie Granulite Belt, i.e., the Białystok fault. Therefore, the Pietkowo IG1 rapakivi-type quartz monzonite is a representative of the Mesoproterozoic A-type granitoid occurrence in southernmost Fennoscandia.

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Basement correlation across the southernmost Baltic Sea: Geochemical and geochronological evidence from onshore and offshore deep drill cores, northern Poland

Cited by 7 publications

References 65 publications

An Eocene conger eel (Teleostei, Anguilliformes) from the Lillebælt Clay Formation, Denmark

An Eocene conger eel (Teleostei, Anguilliformes) from the Lillebælt Clay Formation, Denmark

The Pomerania Gravity Low at the East European Craton margin – a granitic batholith or a Paleoproterozoic impact structure?

A new A-type granitoid occurrence in southernmost Fennoscandia: geochemistry, age and origin of rapakivi-type quartz monzonite from the Pietkowo IG1 borehole, NE Poland

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