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Introduction
I am currently working on biogeochemical Si cycle in the marine environment of Late Cretaceous European Basin. My interest is concentrated on Si outflow by diagenetic precipitation of silica polymorphs. I realise my scientific goals by mineralogical and microtextural studies of carbonate-siliceous and siliceous rocks.
To see what I am doing in my project go to: https://www.facebook.com/profile.php?id=100089624193281
Additional affiliations
October 2014 - February 2016
November 2010 - June 2013
Position
- Lecturer
Description
- Paleontology-workshop Historical geology-workshop Paleontology-filed workshop
October 2009 - October 2014
Publications
Publications (31)
The Si, which is an important element within the Earth’s crust, mostly occurs as a
monomeric silicic acid (DSi) in seawater and is utilised by marine organisms to build
their skeletons made of opaline silica (BSi). It is also an essential component for many
minerals formed in marine environments. The general model of the Si balance, mostly
derived...
During the Late Cretaceous, the dissolved silicon (DSi) concentration in the marine, pelagic environment of the epicontinental European Basin was controlled by the oceanic influx of DSi-enriched water. The inflow of oceanic water masses caused parts of the shelf basin that were influenced by them to reach DSi concentrations sufficient for opal-CT f...
The silicon (Si) cycle in the modern ocean might still be representative of some of the processes that occurred in the Si‐depleted post‐Eocene oceans resulting after the expansion of diatoms. However, silicon‐rich pre‐Eocene seas, where sponges and radiolarians were major Si users before the emergence of diatoms, were radically different from moder...
The opoka is a carbonate-siliceous marine sedimentary rock, forming a thick succession of Upper Cretaceous
age in Poland and in another regions of Europe. This rock has been studied for over 150 years, but only the
use of modern analytical techniques enables for the formulation of its mineralogical definition, which identifies
the distinct features...
Following the unanimous vote of the Executive Committee
of International Union of Geological Sciences in
October 2022, the Global boundary Stratotype Section
and Point for the base of the Campanian Stage is confirmed
as the magnetic polarity reversal from Chron 34n
(top of the Long Cretaceous Normal Polarity–Chron) to
Chron C33r at the 221.53 m lev...
Phymatellid demosponges are common fossils in the Campanian deposits of central Europe. In Poland, the Campanian phymatellids were known mostly from the opoka facies of the Miechów Synclinorium (southern Poland), where they occur mainly in the characteristic horizons of siliceous nodules in the lower Campanian opoka succession. Similarly preserved...
The stratigraphy and palynology of the upper Santonian – lower Campanian (Uintacrinus socialis – Gonioteuthis quadrata zones) Newhaven Chalk are described for the Campanian auxiliary GSSP section at Seaford Head, England. A new high-resolution bulk-sediment carbonate carbon stable-isotope (δ¹³Ccarb) curve provides the basis to refine the carbon-iso...
The process of early diagenetic silica precipitation led to a significant silica burial flux, expressed in the geological record by the formation of thick opoka successions. The mineralogical composition of silica-bearing rocks, comprising opoka, chert nodules, and marly intercalations, is presented in various Upper Cretaceous localities of the Mie...
Theonellid and phymaraphiniid sponges were described for the first time in assemblages of Campanian lithistid Demospongiae collected from Miocene gravels in the Bełchatów lignite mine (Mogilno‐Łódź Synclinorium, central Poland). Here we add an analysis of sponges from museum collections, as well as of newly collected material from Campanian strata...
Clinoptilolite, an authigenic mineral of the zeolite group, is commonly considered as a product of rhyolitic volcanic glass transformation during diagenesis of carbonate pelagic/hemipelagic sediments of Cretaceous-Paleogene age. Another, subordinate way of clinoptilolite formation that has been suggested in the literature is its precipitation durin...
Siliceous sponges are common fossils in Turonian-Coniacian deposits of Central Europe. Despite numerous studies, the sponge fauna of this age is not sufficiently recognised, due to common poor preservation of the sponge skeletons. The presented taxonomic description of 16 species belonging to Hexactinellida and six species of Demospongiae from Opol...
During the Late Cretaceous due to high global sea-level the coastlines were shifted far towards the land and pelagic carbonates dominated over siliciclastic sedimentation. In most parts of the epicontinental
European Basin, during that time, the huge amounts of pelagic chalk were formed, while in the NE part of the European Basin similar carbonates...
Lepidenteron mantelli is a trace fossil produced by a burrowing marine invertebrate (probably a polychaete) that sequestered plant macroremains in Cenomanian-Coniacian marly calcareous sediments of the Central European Basin during transgression events. For more than a century and half, this trace fossil has been mistaken for a fossil plant. In thi...
This paper presents the results of studies on plant macroremains found in the upper Turonian of the
Folwark Quarry, Opole, Poland, associated with palynological studies of the host rocks. In addition to a
few macrofossils (gymnosperm wood, conifer Geinitzia reichenbachii and fern ?Didymosorus) rich
sporomorphs (bryophyte, lycopod and fern spores, c...
An integrated biostratigraphic (foraminifera, calcareous nannofossils, crinoids), chemostratigraphic (stable carbon isotopes) and magnetostratigraphic study of the Bocieniec section (southern Poland) is presented here. The section presents a continuous and lithologically monotonous sedimentary record across the Santonian–Campanian boundary transiti...
The palynological study and palynofacies analysis
supported by size analysis of opaque phytoclasts and
diversity indexes for particulate organic matter in stratigraphically
well-constrained (inoceramid biostratigraphy)
sections is applied in monotonous Upper Cretaceous carbonate-
siliciclastic sediments of southern Poland. Integrated
data allow for...
In a unique middle Campanian horizon at Rzeżuśnia, southern Poland, the trace fossil Chondrites occurs densely and preferentially on the lower side of horizontally oriented ammonite moulds but it is absent in the surrounding sediment and on the upper side of the moulds. The ammonite shells created an ideal microenvironment for the Chondrites trace...
Dynamic evolution of the Campanian and Maastrichtian (Upper Cretaceous) of the Miechów Synclinorium is presented. Through chronostratigraphic analysis, the geometry of the Campanian and Maastrichtian of the area is interpreted, while microfacies analysis allowed determination of some of the paleoenvironmental parameters (rate of sedimentation, bott...
The trace fossil Lepidenteron lewesiensis (Mantell 1822) provides an exceptional taphonomic window to diversity of fishes as shown for the Upper Creta-ceous of Poland, in the Middle Turonian–Lower Maastrichtian deposits of the Opole Trough, Miechów Trough, Mazury-Podlasie Homocline, and SE part of the Border Synclinorium. Lepidenteron lewesiensis i...
The trace fossil Lepidenteron lewesiensis (Mantell 1822) provides an exceptional taphonomic window to diversity of fishes as shown for the Upper Cretaceous of Poland, in the Middle Turonian–Lower Maastrichtian deposits of the Opole Trough, Miechow Trough, Mazury-Podlasie Homocline, and SE part of the Border Synclinorium. Lepidenteron lewesiensis is...
The stratigraphical distribution of Porosphaera globularis, a common calcareous sponge in the Upper Cretaceous (mostly Campanian and Maastrichtian) of Poland was studied. The presented material, both new and from museum collections, comes from the Campanian of the Miechow Synclinorium, in southern Poland, and from the Lower Campanian of Mielnik in...
Jurkowska, A. and Uchman, A. 2013. The trace fossil Lepidenteron lewesiensis (Mantell, 1822) from the Upper Cretaceous of southern Poland. Acta Geologica Polonica, 63 (4), 611-623. Warszawa.
Lepidenteron lewesiensis (Mantell, 1822) is an unbranched trace fossil lined with small fish scales and bones, without a constructed wall. It is characteristic...
Cretaceous lyssacinosid sponges (Hexactinellida) are rare and poorly recognized. This is the first description of lyssacinosid sponges from the Cretaceous of Poland. The sponges (including six species and three types of root tufts) come from the Upper Turonian–Lower Coniacian of the Opole Trough, Upper Campanian of the Miechów synclinorium, and Upp...
Taphonomic analysis of Lower and Middle Oxfordian ammonites from the Cracow Upland, southern Poland (localities at Podłęże, Zalas, Młynka) revealed differences in ammonite preservation. The studied ammonites, usually termed as external and internal moulds, show a more complex state of preservation. In the Middle Oxfordian glauconitic marls, ammonit...
Cathodoluminescence (CL) studies of Lower–Middle Oxfordian marls and limestones, as well as clasts from the uppermost Turonian–?Early
Coniacian conglomerates of the Cracow Upland (southern Poland), reveal that the CL view of foraminifers from some lithologies
differs from that in transmitted light. In particular, the CL technique revealed abundant...
