Mikroskamieniałości Organiczne Terenewu (Kambr Dolny) I Późnego Ediakaru (Neoproterozoik) Okolic Krakowa

Jachowicz-Zdanowska, Monika

doi:10.5604/08676143.1113065

Cited by 8 publications

(1 citation statement)

References 44 publications

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“…However it cannot be excluded that the southerly land actually formed a broad ridge in the early Cambrian sea. Interestingly, its eastern/northeastern shore likely belonged to the Baltican realm as acrtitarchs retrieved from lower Cambrian mudstones represent the same groups as those found in rocks from the EEC, in Lithuania and Estonia (Jachowicz-Zdanowska 2014). Similar inference has been made based on early Cambrian trilobites, though these, at the species level, are reported only from Silesia and the HCM Kielce belt (endemites?)…”

Section: Upper Silesia/brunovistuliasupporting

confidence: 60%

Baltica and the Cadomian orogen in the Ediacaran–Cambrian: a perspective from SE Poland

Żelaźniewicz

Oberc-Dziedzic

Sláma

2020

Int J Earth Sci (Geol Rundsch)

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In the supercontinent of Rodinia, Baltica occurred next to Amazonia, then the two drifted away when Rodinia broke up. By the end of the Neoproterozoic, Baltica became an independent continent. At that time, Timanide orogen developed at its modern northeastern margin. In most paleogeographical reconstructions, the opposite (SW, Tornquist) edge faced the Tornquist Ocean and remained just a passive margin till the arrival of the Gondwana-born East Avalonia in the late Ordovician. However, preliminary isotopic studies of detrital zircons from the Tornquist passive margin succession hinted that rock components of Gondwana derivation reached Baltica already in the early Cambrian. In this paper, we examine 18 drill-cores of Ediacaran-Cambrian and Ordovician siliciclastic rocks from the tectonostratigraphic units along the SW-NE transect from Upper Silesia (USB) via Małopolska (MB) and the Holy Cross Mts (HCM) to the East European Platform (EEP), SE Poland, in terms of the provenance data gained from the LA-ICP-MS and SHRIMP analyses of 32 zircon samples. Rocks from all the units revealed abundant Cadomian 0.7-0.55 Ga detrital zircons (15-50% of the total analyzed grains) and other grains that yielded peaks at 0.9-1.2, 1.4-1.6, 1.8-2.2, 2.7-3.0 Ga assignable to Baltica rather than Amazonia. Such age spectra in the USB, HCM and EEP prove the proximity of peripheral (peri-Gondwanan) fragments of the Cadomian orogen to Baltica. These fragments formed the Teissyere-Tornquist Terrane Assemblage (TTA) that obliquely docked and overrode the thinned southwestern edge of Baltica which earlier accumulated Neoproterozoic rift and passive margin deposits. Our data show that in the late Ediacaran-early Cambrian, parts of the Cadomian orogenic belt became accreted to Baltica.

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Section: Upper Silesia/brunovistuliasupporting

confidence: 60%

Baltica and the Cadomian orogen in the Ediacaran–Cambrian: a perspective from SE Poland

Żelaźniewicz

Oberc-Dziedzic

Sláma

2020

Int J Earth Sci (Geol Rundsch)

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The use of S-guided CREP methodology for advanced seismic structure enhancing processing

Zaręba¹,

Laskownicka²,

Zając³

2019

Acta Geophys.

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To acquire refined seismic targets, the use of more accurate and more precise methods of seismic signal processing is crucial. Novel seismic processing approach is even more important in case of the complex geology of mountainous regions (e.g., Carpathians, Carpathian Foredeep) where sub-vertical layering of varying rock complex can be found, but also in case of old seismic data reprocessing (especially when the signal-to-noise ratio and general quality are low). Regardless of many research papers and significant progress in seismic processing techniques, a properly processed and interpreted seismic image is still hardly affordable for this region. Obtaining a new value in seismic data processing is a core function of the presented research. The use of dip-guided filtering combined with beam partitioned analysis and Z-domain dip analysis for reprocessing of 3D and 2D seismic data from the Carpathians region has been studied.

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Animal origins: The record from organic microfossils

Slater

Bohlin

2022

Earth-Science Reviews

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Mikroskamieniałości Organiczne Terenewu (Kambr Dolny) I Późnego Ediakaru (Neoproterozoik) Okolic Krakowa

Cited by 8 publications

References 44 publications

Baltica and the Cadomian orogen in the Ediacaran–Cambrian: a perspective from SE Poland

Baltica and the Cadomian orogen in the Ediacaran–Cambrian: a perspective from SE Poland

The use of S-guided CREP methodology for advanced seismic structure enhancing processing

Animal origins: The record from organic microfossils

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