Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Pienkowski, G." wg kryterium: Autor

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 24
Tytuł:
New data about Matonia braunii (Göppert) Harris from the Early Jurassic of Poland and its ecology
Autorzy:
Barbacka, M.
Pacyna, G.
Pieńkowski, G.
Ziaja, D.
Powiązania:
https://bibliotekanauki.pl/articles/2060525.pdf
Data publikacji:
2016
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Polska
Holy Cross Mountains
Hettangian
Matonia
Opis:
Fern remains of matoniacean affinity were found in the Lower Hettangian strata of lacustrine/backswamp origin from the Niekłań PGI 1 borehole (central Poland, Holy Cross Mts.). The preserved fragments have been identified as Matonia braunii (Göppert, 1841) Harris, 1980. The remains suggest a rather small, low-growth plant with palmately compound fronds. The sori contain at least 5 sporangia preserved with well-developed annuli. The spores are triangular, trilete and kyrtomate, with a thin and smooth surface corresponding with dispersed Dictyophyllidites mortoni (de Jersey, 1959) Playford et Dettmann, 1965. Based on the gross morphology of sterile and fertile pinnae, suggestions made by Harris (1980) on the synonymy of Phlebopteris braunii (Göppert, 1841) Hirmer et Hörhammer, 1936 with P. muensteri Schenk, 1867 (Hirmer and Hörhammer, 1936) and their referral to Matonia braunii is proved and confirmed in this paper. The fern occurs in strata indicating a warm and humid climate and approaching transgression resulting in a high water table and the enhanced accumulation of organic matter.
Źródło:
Geological Quarterly; 2016, 60, 4; 857--868
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Shale gas in China : how much and when?
Gaz z łupków w Chinach : ile i kiedy?
Autorzy:
Changbo, Ch.
Pieńkowski, G.
Powiązania:
https://bibliotekanauki.pl/articles/2066803.pdf
Data publikacji:
2015
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
shale gas
China
geology
resources
policy
cooperation with Poland
gaz łupkowy
Chiny
geologia
zasoby
polityka
współpraca z Polską
Opis:
China is ranked as the world’s largest resource-holder of unconventional gas (estimated at about 25–31 trillion cubic meters – tcm), and current production is 1.3 billion cubic meters (bcm). Also other unconventional resources(tight gas, CBM) are large in global standards. There are strong energy security reasons in China – a long run strategy for China is to reduce its dependency on imported gas resources, thus the growth of domestic output of unconventional gas production (coal bed methane, tight and in particular shale gas) has been recognized as very important both by the government, giving significant impetus to the development of shale gas extraction. However, significant uncertainties remain about the extent to which this resource will be developed as aspects of China’s geology and the structure of the gas sector (in terms of pricing as well as access to water and pipelines) and population density, possess significant problems. A key role in Chinese unconventional hydrocarbons exploration is played by large Chinese national oil companies. The most productive shales are Lower Paleozoic marine strata in South China, in particular the organic-rich Lower Silurian Longmaxi Formation in the upper Yangtze region, characterized also by wide distribution, large thickness and generally fairly good other properties. Both subsurface geological and surface conditions of major shale gas plays in China are more complex than those in USA. Concerning geology, many shale gas plays in China are faulted and sometimes cross-cut by tectonically active zones – however, in some best productive zones tectonics improves conductivity of reservoirs. Number of Chinese shale plays (particularly those of lacustrine origin, representing a large share of Chinese resources) contain clay rich formations, which impairs effectiveness of hydraulic fracturing. Concerning environmental issues, China decided to go for a practice-oriented approach and no specific regulations for unconventional hydrocarbons currently exist in China, only some – pre-during and – post-operation recommendations are discussed. Interestingly, in many aspects unconventional hydrocarbon exploration in China show more similarities to the situation in Poland than to USA and bilateral cooperation may be fruitful for both sides.
Źródło:
Przegląd Geologiczny; 2015, 63, 10/3; 1206--1214
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hettangian tetrapod burrows from the continental Steierdorf Formation at Anina, western Romania
Autorzy:
Csiki-Sava, Z.
Kedzior, A.
Pienkowski, G.
Popa, M. E.
Powiązania:
https://bibliotekanauki.pl/articles/2059864.pdf
Data publikacji:
2016
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
tetrapod burrows
therapsids
crocodyliforms
dinosaurs
Lower Hettangian
Steierdorf Formation
Opis:
Very large, sparsely distributed, sinuous, gently dipping and occasionally branching tunnels with subordinate swells, as well as possible chambers and scratches, are described from the Hettangian Dealul Budinic Member of the Lower Jurassic continental Steierdorf Formation at Anina in the South Carpathians, Romania, and are interpreted as tetrapod burrows. No bone remains have been found in association with these structures. The morphology and large dimensions of the burrows suggest that the trace-makers were sauropsid amniotes, most probably either crocodyliforms or small-sized basal neornithischian dinosaurs, although their therapsid affinities, despite being less likely, cannot be discarded either. The age, large size and probable origin of these burrows add important information to a poorly documented period of the evolution of tetrapod fossoriality. It may be suggested that within a relatively short time interval following the Triassic-Jurassic extinction event, when environmental conditions were still marked by strongly seasonal climate with prolonged droughts as well as extreme moisture and temperature fluctuations, fossorial habit probably became yet again an endurance strategy for burrow makers.
Źródło:
Geological Quarterly; 2016, 60, 2; 395--406
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gigantic footprint of a theropod dinosaur in the Early Jurassic of Poland
Autorzy:
Gierlinski, G
Niedzwiedzki, G
Pienkowski, G
Powiązania:
https://bibliotekanauki.pl/articles/22354.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Polska
gigantic footprint
Early Jurassic
theropod
Late Jurassic
dinosaur
Jurassic
gigantic theropod
geographic distribution
stratigraphic distribution
theropod dinosaur
deposit
Holy Cross Mountains
paleontology
Źródło:
Acta Palaeontologica Polonica; 2001, 46, 3
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New ornithischian dinosaur footprints in the Jurassic of Poland
Autorzy:
Gierliński, G.
Gaździcka, E.
Niedźwiedzki, G.
Pieńkowski, G.
Powiązania:
https://bibliotekanauki.pl/articles/2059274.pdf
Data publikacji:
2001
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Polska
Hettangian
Kimmeridgian
Ornithischia
dinosaurs
footprints
Opis:
New stratigraphic horizons with the ornithischian footprints have been found in central Poland. Basal thyreophoran ichnites are reported from the middle Hettangian Skloby Formation of Gromadzice. They support the previous conclusion that small and medium-sized Early Jurassic ornithischians preferred a coastal habitat with low-rise vegetation. Another find, an ornithopod footprint, came from the early Kimmeridgian Glowaczow Formation of Ozarow quarry. The track was discovered within the shallow-marine succession of calcareous deposits, which contributes to the interpretation of synsedimentary emersion of that area during the early Kimmeridgian.
Źródło:
Geological Quarterly; 2001, 45, 2; 205-210
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geneza krzemieni górnego oksfordu w Krzemionkach Opatowskich
Genesis of the Upper Oxfordian flints in Krzemionki Opatowskie, Poland
Autorzy:
Gutowski, P.
Pieńkowski, G.
Powiązania:
https://bibliotekanauki.pl/articles/2077299.pdf
Data publikacji:
2004
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
krzemionka opatowska
krzemień
shallow water carbonates
decapod burrows
sedimentary discontinuities
Opis:
Early diagenetic concretionary flint nodules from the Upper Oxfordian oolitic and micritic limestones represent silicified crustacean burrows. Their occurence is confined to very shallow carbonate facies of barrier, lagoonal, and tidal flat origin. Fills of crustacean burrows commonly provided a nucleation centre for flint formation and thereby the template on which flint nodule beds were constructed. The reason for the special relationship between flint and crustacean burrows probably lie in the original texture (high permeability) of the burrow networks and also in the organic content (including the microbial assemblages) lowering the pH. Nodule horizons are developed more or less parallel to bedding, to form several widespread horizons of the regional correlative significance.
Źródło:
Volumina Jurassica; 2004, 2, 1; 29-36
1896-7876
1731-3708
Pojawia się w:
Volumina Jurassica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Poziomy megasporowe epikontynentalnych utworów triasu i jury w Polsce – podsumowanie
Megaspore zones of the epicontinental Triassic and Jurassic deposits in Poland – overview
Autorzy:
Marcinkiewicz, T.
Fijałkowska-Mader, A.
Pieńkowski, G.
Powiązania:
https://bibliotekanauki.pl/articles/2062482.pdf
Data publikacji:
2014
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
poziomy megasporowe
korelacje biostratygraficzne
trias
jura
megaspore zones
biostratigraphical correlations
Triassic
Jurassic
Opis:
Praca stanowi podsumowanie wyników wieloletnich badań nad rozmieszczeniem megaspor w epikontynentalnych utworach triasu i jury dolnej na Niżu Polskim. W materiale pochodzącym z kilkuset otworów, położonych na obszarze Polski pozakarpackiej, wydzielono 11 zespołów megasporowych o randze poziomów zespołowych, skorelowanych ze standardowym podziałem stratygraficznym. Poziomy te mogą być zastosowane w biostratygrafii utworów triasu i jury dolnej nie tylko na obszarze Polski, lecz także do szerszych porównań w skali europejskiej i światowej jako poziomy standardowe.Wydzielone poziomy megasporowe powiązano z poziomami miosporowymi triasu i jury dolnej, wyróżnianymi na obszarze Polski. Dane miosporowe, a także ostatnio przeprowadzone wysokorozdzielcze badania chemostratygraficzne przyczyniły się do uzyskania dodatkowych uściśleń wiekowych wyróżnionych poziomów megasporowych. Megaspory są także ważnym wskaźnikiem paleoklimatycznym.
The paper summarizes many years of studies on the distribution of megaspores in the epicontinental Triassic and Jurassic deposits of Poland. Eleven assemblages in the rank of assemblage zones, correlated with the standard stratigraphical division, have been identified in the material obtained from hundreds of boreholes. These assemblages can be applied for biostratigraphical correlation of Triassic and Jurassic deposits both on a European and global scale as standard zones. Correlation between miospore and megaspore zones, as well as recent high-resolution chemostratigraphic correlations, allowed more precise interpretation of the age of the megaspore zones. Megaspores are also important as palaeoclimatic indicators.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2014, 457; 15--41
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A dinosaur track assemblage from the Upper Hettangian (Lower Jurassic) marginal-marine deposits of Zapniów, Holy Cross Mountains, Poland
Autorzy:
Niedźwiedzki, G.
Pieńkowski, G.
Powiązania:
https://bibliotekanauki.pl/articles/2060538.pdf
Data publikacji:
2016
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
dinosaur tracks
Przysucha Ore-bearing Formation
Upper Hettangian
Lower Jurassic
Holy Cross Mountains
Polska
Opis:
Upper Hettangian (Lower Jurassic) marginal-marine Przysucha Ore-bearing Formation exposed at Zapniów mine and clay-pit (northwestern part of the Holy Cross Mountains area, central Poland) revealed an interesting assemblage of dinosaur tracks. Although mostly yielding poorly preserved and isolated tracks probably left in shallow water conditions, the site nevertheless indicates a diversity of early saurischian (theropods and sauropodomorphs) and ornithischian (thyreophorans) dinosaur trackmakers. This new assemblage is partly consistent with the Lower-Middle Hettangian ichnorecord from the same region. The tracks are preserved in sediments of a barrier-foreshore origin within a barrier/lagoonal depositional system, belonging to the highstand systems tract, located below a marked erosional surface (sequence boundary), which is associated with a substantial fall in sea level at the end of Hettangian times. Here we described all previously and newly collected or observed in the field dinosaur tracks from both surface and underground exposures at Zapniów. Four ichnospecies: Grallator isp., Anchisauripus isp., cf. Tetrasauropus isp., and cf. Anomoepus isp. were identified. The theropod and ornithischian tracks show distinct similarities to those described from the richest in this region and most famous Gliniany Las dinosaur track assemblage, in age approximately coeval to Zapniów. Two sizes of theropod tracks (small and medium) indicate the presence of two different size classes or species of predators in this area. The described cf. Tetrasauropus isp. from Zapniów is the first unquestioned evidence of basal sauropodomorphs in the Upper Hettangian of the Holy Cross Mountains and first record of this ichnotaxa in the Lower Jurassic of Poland. Additionally, two theropod trackways (Anchisauripus isp.) show evidence for trotting. The new finds suggest similarities between marginal-marine environments (delta-plain and foreshore-barrier/lagoon lithofacies) association of dinosaurs containing low-browsing thyreophorans accompanied by small or juvenile sauropodomorphs and small to medium sized theropods. Presence of the ornithischian footprints suggests their prominent role as a major component in Middle-Upper Hettangian dinosaur faunas in marginal-marine environments dominating in the region.
Źródło:
Geological Quarterly; 2016, 60, 4; 840--856
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A dinosaur track association from the Early Jurassic deltaic deposits of Podole near Opatów, Poland
Autorzy:
Niedźwiedzki, G.
Pieńkowski, G.
Powiązania:
https://bibliotekanauki.pl/articles/2058805.pdf
Data publikacji:
2004
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Polska
Holy Cross Mountains
Lower Jurassic
delta-plain deposits
dinosaur tracks
Opis:
Middle Hettangian (Early Jurassic) deltaic deposits of the Skłoby Formation exposed at Podole near Opatów (eastern part of the Holy Cross Mts. area, Central Poland) revealed new specimens of dinosaur tracks. Four ichnospecies: Anchisauripus sp., Kayentapus sp., Parabrontopodus sp., and cf. Anomoepus sp.were identified. The new finds suggest that the deltaic (delta-plain) association of dinosaurs is characterised by dominance of low-browsing thyreophorans accompanied by juvenile sauropods and medium- to large sized theropods.
Źródło:
Geological Quarterly; 2004, 48, 4; 333--338
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dinosaur footprints from the Thaiat ridge and their palaeoenvironmental background, Jaisalmer Basin, Rajastan, India
Autorzy:
Pieńkowski, G.
Brański, P.
Pandey, D. K.
Schlögl, J.
Alberti, M.
Fürsich, F. T.
Powiązania:
https://bibliotekanauki.pl/articles/2077324.pdf
Data publikacji:
2015
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
dinosaur footprints
palaeoclimate
palaeoenvironment
Jaisalmer
India
Jurassic
ślady dinozaurów
paleoklimat
paleośrodowisko
Indie
jura
Opis:
Two dinosaur footprints: Eubrontes cf. giganteus and Grallator tenuis, both attributed to theropods, have been found in the Lower Jurassic Thaiat Member of the Lathi Formation at the Thaiat ridge, near Jaisalmer in western Rajasthan, India. The footprints were left in sediments of a tidal origin, located in profile a few meters above a marked transgressive/flooding surface. They show different states of preservation – the smaller Grallator tenuis represents a well-preserved concave epirelief footprint on the upper surface of a sandstone containing nerineid gastropod shells, while the bigger Eubrontes cf. giganteus footprint shows a rare state of preservation as a positive epirelief on the top of a calcareous sandstone bed, where recent erosion exposed the footprint cast by removing the mud above and around the footprint. The Thaiat ridge section has been amended in its lower part, to indicate the marked transgressive surface. Geochemical analyses and calculated weathering indices (such as CIA) show that the hinterland climate was seasonal to semi-arid during deposition of that part of the succession.
Źródło:
Volumina Jurassica; 2015, 13, 1; 17--26
1896-7876
1731-3708
Pojawia się w:
Volumina Jurassica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Early Jurassic sauropod footprints of the Southern Carpathians, Romania: palaeobiological and palaeogeographical significance
Autorzy:
Pieńkowski, G.
Popa, M. E.
Kedzior, A.
Powiązania:
https://bibliotekanauki.pl/articles/2059248.pdf
Data publikacji:
2009
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Parabrontopodus
sauropods
Romania
Hettangian
palaeobiogeography
Opis:
The dinosaur footprints cf. Parabrontopodus isp. Lockley, Farlow et Meyer, 1994, attributed to sauropods, have been found in Hettangian (earliest Jurassic) alluvial deposits in Anina (Colonia Ceha Quarry, Resita Basin), belonging to the Getic Nappe in the Southern Carpathians, Western Romania. Heteropodous pes-manus sets and one short, narrow-gauge trackway have been recognized on a large sandstone surface trampled by sauropods. Agreater load was carried by the inner digits of the pes, particularly digit I, and the heel pad is deeply imprinted, which points to a sub-plantigrade pes and gravipodal posture, typical for Eusaropoda. A pentadactyl manus imprint suggestetthat manus digits of early sauropods might have been separate and perhaps more functional when supporting walking on unstable, sticky ground. These tracks, the first find of Jurassic dinosaur footprints in Romania, add an important site to the relatively rare record of earliest Jurassic sauropod footprints. These tracks also confirm that Pangaean islands and peninsulas around the Western Tethys were inhabited by early sauropods. These peninsulas or islands, including a hypothetical "Moesian Island", must have been at least temporarily connected with the mainland. The sizes of the Romanian footprints are similar to the Hettangian Parabrontopodus isp. tracks described from Poland (mainland Pangaea — Eurasian area) and Italy (Tethyan domain) and do not indicate insular dwarfism.
Źródło:
Geological Quarterly; 2009, 53, 4; 461-470
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geologiczne muzea i parki tematyczne dźwignią edukacji, rozwoju i biznesu
Geological museums and theme parks - mainspring of education, development and business
Autorzy:
Pieńkowski, G.
Powiązania:
https://bibliotekanauki.pl/articles/2074861.pdf
Data publikacji:
2011
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
muzeum geologiczne
parki rozrywkki
edukacja
rozwój regionalny
biznes
geological museums
theme parks
education
regional development
business
Opis:
Geodiversity is an important part of environmental and national assets as it plays a fundamental role in contributing to sustainable development. However, it remains one of the least recognised and valued, largely because its attractiveness is still not fully appreciated. Earth sciences inspires our awareness and knowledge. Traditionally, geological museums collected fossils, rocks, minerals and archaeological objects, first to serve the scientific community and then to perform various educational functions for non-specialists. Currently, natural museums frequently became large theme parks, presenting in situ original fossils, models and applying variety of multimedia technologies. On the other hand, such large educational centres serve as nuclei for geoparks (a geopark means a clearly defined territory, which includes a particular geological heritage and a sustainable territorial development strategy supported by a program to promote preserving the geological heritage and development, including the economic one). Therefore, geological museums, theme parks and geoparks work together and they have direct impact on the territory by influencing its inhabitants' living conditions and environment. The objective is to promote geological knowledge and simultaneously to enable the inhabitants to reappropriate the value of the geological heritage and actively participate in the cultural revitalization of a given territory as a whole. Examples from China and Poland show how it can be done, irrespectively of scale and character of naturalmonuments and geodiversity.
Źródło:
Przegląd Geologiczny; 2011, 59, 4; 323-328
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geologiczne składowanie ditlenku węgla (CCS) jest metodą bezpieczną : dowody geologiczne
Geological storage of carbon dioxide (CCS) is safe : geological evidence
Autorzy:
Pieńkowski, G.
Powiązania:
https://bibliotekanauki.pl/articles/2075363.pdf
Data publikacji:
2015
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
składowanie CO2
bezpieczeństwo
właściwości uszczelniające
chemostratygrafia
paleoklimatologia
CO2 storage
safety
seal properties
chemostratigraphy
palaeoclimatology
Opis:
CO2 capture and geological storage (CCS) should be implemented in Poland, if combustion of coal will remain as a main source of energy in Poland, and European Union climate policy requirements are to be met. Despite existing experience and number of existing operational projects worldwide, a common fear concerning safety of the onshore, large scale geological storage of CO2 still occurs. Because of that fear, some European countries substantially limited even demonstration CCS projects. However, opinions on the method's safety should be based on solid geological evidence, not fears. Herein I provide some evidence from the Lower Jurassic basin in Poland that the method is safe. The key issue is the geological integrity of a seal. High-resolution sequence stratigraphy verified by chemostratigraphical correlation based on 13C isotope correlation, proved that one of key seal formations, the lower Toarcian Ciechocinek formation composed of clayey-muddy rocks with sandstone intercalation, is integral in terms of its lithology and spatial extent over the larger part of the Polish basin and provides an excellent seal. Origin of such favourable properties is attributed to climatic conditions (supergreenhouse conditions on land) during the Toarcian Oceanic Anoxic Event and high sea level at that time. Moreover, similar conditions occurred for four times during the Early–Middle Jurassic times, creating another over-regional seal formations in the large parts of the Polish Mesozoic epicontinental basin. It can allow a tiered sequestration method, using several sequestrartion systems (reservoir-seal couples) one above another, thus allowing much more voluminous and effective storage of CO2 and methane (for economic purposes) in selected structures.
Źródło:
Przegląd Geologiczny; 2015, 63, 1; 48--54
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Invertebrate trace fossil assemblages from the Lower Hettangian of Sołtyków, Holy Cross Mountains, Poland
Autorzy:
Pieńkowski, G.
Niedźwiedzki, G.
Powiązania:
https://bibliotekanauki.pl/articles/2061345.pdf
Data publikacji:
2008
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Hettangian, Lower Jurassic
invertebrate trace fossils
bivalves
crayfishes
insects
continental ichnofacies
Holy Cross Mountains
Polska
Opis:
Invertebrate trace fossil assemblages from the Hettangian (Early Jurassic) alluvial plain deposits of Sołtyków (Holy Cross Mts, Poland) represent three terrestrial ichnofacies: the Mermia ichnofacies (entirely aquatic), Scoyenia ichnofacies, and Coprinisphaera ichnofacies. They span environments from shallow lacustrine to different subaerial fluvial environments. Bivalve burrows and traces, oligochaetae, insect and crayfishes burrows, plant roots, vertebrate tracks and other types of trace fossils record information on biodiversity and palaeoecological conditions. The Sołtykow ichnoassemblages confirm that terrestrial ichnocoenoses were quite diversified, chiefly a result of a changing water table and food availability. Diversity of trace fossils was supported by the strongly mosaic character of local environments. Bivalve burrows are very diversified, and several ichnogenera have been distinguished. Trace fossil producers as well as functional, taphonomic and preservational aspects of ichnofossils are discussed. The following ichnotaxa have been recognized: Lockeia siliquaria James, 1879; L. amygdaloides (Seilacher, 1953); L. czarnockii (Karaszewski, 1974); Scalichnus isp.; Scoyenia isp.; Spongeliomorpha isp.; Spongeliomorpha carlsbergi (Bromley and Asgaard, 1979); Cruziana problematica (Schindewolf, 1921); cf. Cruziana isp.; Rusophycus isp.; Diplichnites isp.; cf. Kouphichnium sp.; Planolites isp.; Palaeophycus isp.; Cochlichnus isp.; cf. Helminthoidichnites isp.; cf. Xylonichnus isp., and Linckichnus terebrans Schlirf, 2006. Various structures attributed to arthropod burrows (vertical to subvertical tunnels), chambered insect nests of Pallichnidae affinity or other nests with septa, earthworm burrows as well as enigmatic radial chambers, likely made by crayfishes, are illustrated. The new bivalve dwelling ichnotaxon Calceoformites uchmani igen. et isp. n. is described.
Źródło:
Volumina Jurassica; 2008, 6, 1; 109--132
1896-7876
1731-3708
Pojawia się w:
Volumina Jurassica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lithofacies and palaeoenvironmental interpretation of the Early Jurassic Höör Sandstone, Southern Sweden
Autorzy:
Pieńkowski, G.
Powiązania:
https://bibliotekanauki.pl/articles/2059898.pdf
Data publikacji:
2002
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Höör Sandstone (Fm)
Early Liassic
Stanstorp Member
Vittseröd Member
sedimentology
fluvial lithofacies
storm- and tide-dominated facies
formal lithostratigraphy
Opis:
Sedimentological analysis of the Early Jurassic Höör Sandstone in Central Scania, Sweden shows that two units representing different lithofacies may be distinguished. The lower Stanstorp Member is characterised by texturally and mineralogically heterogeneous sediments. Mature arenites and immature quartz and subarkosic wackes form two clearly separated groups, interpreted as fluvial channel and alluvial plain deposits respectively. The fluvial character of this member is supported by a dominance of unidirectionally oriented trough sets, abundant plant detritus, the presence of plant roots and palaeosols and a lack of marine body fossils and trace fossils. An intercalated composite polymict conglomerate layer is interpreted as the result of an extraordinary flood. The overlying Vittseröd Member is characterised by mature quartz arenites and large-scale tabular sets with multidirectional orientations. The Vittseröd Member arenites are of storm- and possibly tide-dominated shoreface origin. Bidirectional wave and tide-induced longshore currents and unidirectional onshore migration of sand ridges were the chief depositional processes. Longshore currents towards the NNW prevailed. Upper flow regime features, and erosion and reworking of sediments are attributed to the storm-induced rip currents. Lithofacies characteristics are used to define the following lithostratigraphical units: the Stanstorp and the Vittseröd members, as well as the Höör Sandstone (Fm) above. Lithofacies and palaeoenvironmental characteristics of the Vittseröd Member and their comparison with the facies of the Helsingborg and Döshult members in Western Scania suggest a Sinemurian age for the Vittseröd Member.
Źródło:
Geological Quarterly; 2002, 46, 3; 307-320
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 24

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies