Papers by Stanisław Leszczyński
Environmental Earth Sciences
This study of the Aptian lower part of the Carolinefjellet Formation in Svalbard, Norwegian high ... more This study of the Aptian lower part of the Carolinefjellet Formation in Svalbard, Norwegian high Arctic, is based on well cores and outcrop section in the Adventdalen area of Spitsbergen and reports on the deposits and bioturbation structures of an ancient subpolar marine shelf from a well-known period of global greenhouse climate. The study documents the sedimentation conditions and benthic fauna activity on a warm-water aggrading shelf subject to harsh Arctic wave climate and eurybatic base-level changes, with episodic bottom incursions of cold polar water. Lithofacies associations and 38 observed ichnotaxa represent subenvironments ranging from offshore to lower shoreface and hosting the Cruziana ichnofacies in its distal to proximal expression, with a brief mid-Aptian encroachment of middle shoreface zone with a distal expression of the Skolithos ichnofacies. The ichnofacies are variously impoverished compared to their archetypes. The sediment bioturbation intensity varies, but ...
Clastic rocks of the Lower Triassic (?Induan - lower Olenekian)
Sedimentation on the northern Tethys margin during the Campanian–Maastrichtian Boundary Event: case study from the Skole Nappe of the Polish Carpathians
Sedymentologia : materiał osadowy, procesy sedymentacyjne i ich produkty : treści wykładów kursu sedymentologii w Uniwersytecie Jagiellońskim w r. akad. 2015/16
Outline of the geology of Southern Poland
Palynology of the Eocene-Oligocene transition in the marginal zone of the Magura Nappe at Folusz (Western Carpathians, Poland)
Geologica Carpathica, 2005
Geological Quarterly, 2006
The types, abundance and origin of non-opaque heavy minerals from 17 samples of sandstones and gr... more The types, abundance and origin of non-opaque heavy minerals from 17 samples of sandstones and granule conglomerates of the Godula Beds, Upper Istebna Sandstone, Ciezkowice and Cergowa Sandstone (Upper Cretaceous-Paleogene) of the Beskid OElsski Mts. are described in this study. The descriptions are based on standard optical petrographic investigations and on scanning electron microscope (including electron microprobe) analysis. Garnet, rutile, zircon and tourmaline are the most common types of heavy minerals. Monazite and apatite occur subordinately, whereas epidote and spinel are sporadic. The heavy minerals from the Middle and Upper Godula Beds and the Upper Istebna Sandstone indicate original derivation mainly from metamorphic rocks of granulite and partly eclogite facies. Metasediments were significant constituents, with subordinate granitoids and hornfelses. Granitoids and corresponding pegmatites and aplites, as well as metapelites and metapsammites, appear to be the primary ...
Palaeogeography, Palaeoclimatology, Palaeoecology, 1993
Relative frequencies and penetration depth of distinctive trace fossils were examined in turbidit... more Relative frequencies and penetration depth of distinctive trace fossils were examined in turbidites differing in colour. Distributional differences between particular sediment groups are interpreted to reflect primarily distinct nutritional and oxygen requirements of individual tracemaker taxa. The more tolerant a species was to oxygen deficiency the more distinct is the increase of its trace frequency towards deeper sediment levels. Traces produced by less tolerant species show a frequency increase down to certain depth levels, followed by a decrease toward still deeper levels. In turbidites containing dark gray to black fine-grained divisions, frequencies of all trace fossil taxa decrease towards deeper sediment levels, starting from about 1 cm below the turbidite top.
Palaeogeography, Palaeoclimatology, Palaeoecology, 1996
Bioturbation sequences in the pelagic Folusz limestone indicate deposition under decreasing botto... more Bioturbation sequences in the pelagic Folusz limestone indicate deposition under decreasing bottom aeration, possibly in association with the development of microbial mats. U-shaped burrows Diplocraterion and Arenicolites exclusively were produced in the laminated limestone, and they represent the only colonizers (sessile suspension feeders) of the oxygen-deficient sediment.
A generalized model for the development of ichnocoenoses in flysch deposits
Ichnos, 1993
... 143 Fig. 5. Superimposition of trace fossils on sole of a turbidite sand-stone bed. The postd... more ... 143 Fig. 5. Superimposition of trace fossils on sole of a turbidite sand-stone bed. The postdepositional full burrows Granularia ichnosp. (Sabularia simplex Ksiazkiewicz, 1977) (G) cut-across the casts of ... Specimen on display at Museo de San Telmo, San Sebastian, Spain. Fig. ...
A paleoceanographic model for the Late Campanian–Early Maastrichtian sedimentation in the Polish Carpathian Flysch basin based on nannofossils
Marine Micropaleontology, 2013
ABSTRACT The study is a qualitative and semi-quantitative analysis of calcareous nannofossils in ... more ABSTRACT The study is a qualitative and semi-quantitative analysis of calcareous nannofossils in marlstone and calcareous mudstone beds in a 4.6-m thick section of the Kropivnik Fucoid Marls (Late Campanian–Early Maastrichtian) in the Skole nappe of the Polish Outer Carpathians. This turbiditic succession is conspicuous by its short-term alternation of marlstone-rich and siliciclastic-rich packages, ca. 1 m thick. A model for paleoceanographic control on sedimentation is proposed on the basis of nannofossil assemblages in the studied section. The nannofossils form assemblages of mixed synsedimentary taxa derived from diverse marine environments, differing in trophy, water temperature and distance from land. The mixing occurred due to submarine resedimentation processes. The nannofossils indicate that the siliciclastic-rich packages were deposited during periods of lowered water temperature, decreased calcareous nannoplankton production and oligotrophic to mesotrophic water conditions, which corresponded to the sea-level fall and lowstand. Anti-estuarine circulation and downwelling due to arising shelf-break front are inferred as the factors responsible for oligotrophy. In contrast, in the marlstone-rich packages, the calcareous nannofossils indicate sedimentation during periods of significantly increased calcareous nannoplankton production, which corresponded to the sea-level rise and highstand. The increased nannoplankton production is attributed to estuarine circulation and upwelling. The changes in sea level and water circulation conform to the climate changes postulated independently for the Late Campanian–Early Maastrichtian.
Trace fossils from Silurian and Devonian turbidites of the Chauvay area, southern Tien Shan, Kyrgyzstan
Annales Societatis Geologorum Poloniae, 2009
The siliciclastic turbidite successions (Pul’gon and Dzhidala Formations) that crop out in the ea... more The siliciclastic turbidite successions (Pul’gon and Dzhidala Formations) that crop out in the eastern part of the Chauvay River valley, are marked on geological maps as a belt of terrigenous deposits of Silurian–Devonian age. They resemble deposits of overbank areas and depositional lobes of deep sea fans, and display common trace fossils particularly on lower surfaces of sandstone beds. Sixteen ichnotaxa representing four morphological groups have been distinguished. The trace fossil assemblages suggest their affiliation to the Nereites ichnofacies. Various branched, preturbidite forms predominate in both examined units, although the assemblages of individual units differ slightly in composition. In the Pulg’on Formation, small, densely distributed burrows commonly occur on lower surfaces of sandstone beds. Shallow burrowing depth together with relatively low diversity trace fossil assemblages indicate lowered oxygenation of the sea floor.
Sezione Di Museologia Scientifica E Naturalistica, 2005
Review of Palaeobotany and Palynology, 2015
The Jauf Formation miospore succession is synthesized in terms of palaeoenvironments and sequence... more The Jauf Formation miospore succession is synthesized in terms of palaeoenvironments and sequence stratigraphy. The data set for this study is obtained from four overlapping, continuously cored, and extensively sampled, boreholes that form a 940 ft (287 m) composite section. The Jauf Formation ranges in age from late Pragian to latest Emsian. The palynological assemblages, recognized herein, provide the basis for recognizing depositional environments present in the Lower Devonian of northern Saudi Arabia. Transgressive-regressive cycles are indicated not only by lithology, but also by marked changes in the marine to terrestrially dominated palynological assemblages, which are described in detail. Flooding events are recognized by the replacement of sporedominated assemblages by organic-walled microphytoplankton and could be climate-controlled. The maximum flooding interval for the Jauf Formation is reinterpreted based on a correlative event consisting of diverse acritarchs and abundant chitinozoans. The sequence of palynological assemblages corresponds to fourth order cycles in the Hammamiyat Member. The new northern Gondwanan biozonation developed by Breuer and Steemans (2013) and used here allows a high-resolution regional biozonation for the Arabian Plate and largerscale correlation of the Jauf Formation with other Gondwanan and Euramerican localities. One new spore genus (Zonohilates) and four new spore species (Insculptospora maxima, Camarozonotriletes alruwailii, Devonomonoletes crassus and Zonohilates vulneratus) are proposed.
Skały wapienne i wapniste we fliszu polskich Karpat zewnętrznych
CARBONATES IN FLYSCH OF THE POLISH OUTER CARPATHIANS Summary The Outer Carpathian flysch sequence... more CARBONATES IN FLYSCH OF THE POLISH OUTER CARPATHIANS Summary The Outer Carpathian flysch sequence (U. Tithonian-L. Miocene) consists of deep-water mainly siliciclastic sediments. Carbonates are volumetrically and stratigraphically subordinate. Their abundance is different in particular nappes (Fig. 1) and displays rapid lateral and vertical changes. In all nappes, the Turonian-Paleocene, and uppermost Eocene-L. Miocene sequences are distinctively enriched in calcareous material. An additional carbonate enriched division i.e., the Tithonian-Barremian is recorded in the Silesian nappe sequence comprising sediments of the entire U. Tithonian-L. Miocene time-span. The content of calcareous material in vertical sections displays sometimes distinctive fluctuations at a scale of several decimeters (Fig. 2E) up to several tens of meters. The bulk of calcareous material occurs in calcilutites, marlstones and calcareous mudstones to claystones. These are chiefly resediments (turbidites, debri...
Piaskowce ciężkowickie jednostki śląskiej w Polskich Karpatach: studium sedymentacji głębokowodnej osadów gruboklastycznych
Annales Societatis Geologorum Poloniae, 1981
Ciezkowice Sandstones of the Silesian Unit in Polish Caroathians: a study of the coarse-clastic s... more Ciezkowice Sandstones of the Silesian Unit in Polish Caroathians: a study of the coarse-clastic sedimentation in deep-water The Ciezkowice Sandstones (Upper Paleocene — Lower Eocene) are coarse-clastic, deep-water sediments. These sandstones resulted from subaqueous sediment gravity flows. In character the flows were intermediate between those of grain flows, fluidized flows, debris flows and high density turbidity currents. Part of the clastic material was transported also by turbulent traction currents. The clastics were deposited chiefly in channels of submarine fans and at the mouth of these channels. Because of low content of fines in source material only a very small part of clastic material was deposited beyond channels. W pracy przeprowadzona jest analiza struktur sedymentacyjnych, rozkladu wielkości ziarna oraz zroznicowania i rozkladu facji w piaskowcach ciezkowickich (gorny paleocen — dolny eocen) z odniesieniem do utworow otaczających. Wskazuje ona na przynaleznośc piask...
Annales Societatis Geologorum Poloniae, 1996
Leszczynski S., Malik K., Kedzierski M., New data on lithofacies and stratigraphy of the siliceou... more Leszczynski S., Malik K., Kedzierski M., New data on lithofacies and stratigraphy of the siliceous and fucoid marl of the Skole Nappe (Cretaceous, Polish Carpathians) (a reply) Janusz Kotlarczyk (mentioned further as JK) supplied an extensive and overwhelmingly negative opinion of our paper. This opinion, in a substantial part, is based, however, on an misunderstanding of actual goal of the paper. In our paper, we did not intend, as has been suggested by JK, neither to revise stratigraphy nor sedimentology of marly units in the Ropianka Formation of the whole area of their occurrence. Our paper was prepared, as indicated in its title, key words and the introduction, to present the results of our studies on lithofacies of the Holovnia (Siliceous) Marl and Kropivnik (Fucoid) Marl units in three sections in the area of Rybotycze, and nannofossils investigation in 25 samples taken from these sections. Nannofossils were investigated there only for stratigraphie dating of selected fragmen...
Annales Societatis Geologorum Poloniae, 2002
Warunki sedymentacji w strefie Siar basenu magurskiego (Karpaty) w poźnym eocenie-wczesnym oligoc... more Warunki sedymentacji w strefie Siar basenu magurskiego (Karpaty) w poźnym eocenie-wczesnym oligocenie The sediments of the upper Eocene (Priabonian)-lower Oligocene (Rupelian) o f the Siaiy zone in the Magura nappe (basically Magura Beds in glauconitic facies) display features indicating their origination in sedimentary conditions quite different from those in which coeval sediments from the other parts o f the Carpathians were deposited. This paper aims at interpreting the sedimentary conditions on the basis o f lithofacies, their vertical and lateral distribution, foraminifera assemblages, CaC03 and organic matter content determined in six transects through the entire Siary zone, the contents of main and trace elements determined in 11 samples from one section and different published data. Lithofacies and the present day shape of the Siary zone suggest sedimentation of the entire succession in a strongly elongated confined basin. Facies distribution indicates deposition on a subma...
Wapienie glonowe i rodolity z piaskowców ciężkowickich jednostki śląskiej w Karpatach
Annales Societatis Geologorum Poloniae, 1978
Algal limestones and rhodolites from Ciezkowice sandstones of the Silesian Unit (Polish Carpathia... more Algal limestones and rhodolites from Ciezkowice sandstones of the Silesian Unit (Polish Carpathians) Much of the Carpathian flysch was deposited in internal parts of sedimentary basins. The record of previous marginal sediments of -the flysch basins have been preserved as clastic fragments which are penecontemporaneous with deposition of flysch. Such clasts provide informations concerning the composition of shorelines of flysch seas. Especially interesting in this aspect are limestone clasts. Commonly they ere rich in organic remains which point to a differentiated character of biocoenoses of the shores. This work deals with clastic fragments of algal limestones and rhodolites from the Ciezkowice sandstones. The Ciezkowice sandstones of the Silesian Unit represent a coarse grained lithofacies of Paleocene and Lower Eocene (Fig. 1). These sandstones occur as lenslike bodies superimposed one upon another within variegated shales. In geologic literature such bodies are called “horizons...
Środowiska sedymentacyjne i ich osady : treści wykładów dla studentów geologii w Uniwersytecie Jagiellońskim w r. akad. 2015/16
Uploads
Papers by Stanisław Leszczyński