Temat: Jurassic - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Piaskowiec kwarcytowy w dolnej części formacji z Kopieńca między Doliną Bystrej i Doliną Olczyską w Tatrach
Quartzitic sandstone in the lower part of the Kopieniec Formation between the Bystra Valley and the Olczyska Valley in the Tatra Mountains (Poland)
Autorzy:: Iwanow, A.
Zabielski, R.
Połońska, M.
Powiązania:: https://bibliotekanauki.pl/articles/2074849.pdf
Data publikacji:: 2011
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: Lower Jurassic
Kopieniec Formation
Fatricum
Tatra Mts.
Opis:: Quartzitic sandstone was distinguished at the lower part of the Kopieniec Formation from the Lower Subtatric Nappe (Kriżna Nappe; Fatricum) between the Bystra Valley and the Olczyska Valley, in the Tatra Mts. In previous editions of the detail geological maps of the Tatra Mts, this sandstone was not marked in this area. The quartzitic sandstone crops out at Wysokie hill, east of Kuźnice and can be easily recognized in the field. The sandstone is located above the series of the dark-grey organodetrital limestones and the black calcareous sandstones of the Fatra Formation (Rhaetian) and below the typical brownish- gray claystone of the Kopieniec Formation (Hettangian). Maximum thickness of quartzitic sandstone is about 15 m.
Źródło:: Przegląd Geologiczny; 2011, 59; 235-244
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Tytuł:: O ochronie starych kamieniołomów skał jurajskich na Wyżynie Wieluńskiej, czyli o konieczności współdziałania nauki, górnictwa i lokalnej administracji
On the protection of abandoned quarries of Jurassic rocks in the Wieluń Upland, i.e. on the need of cooperation between science, mining and local administration centres
Autorzy:: Wierzbowski, Andrzej
Powiązania:: https://bibliotekanauki.pl/articles/20198928.pdf
Data publikacji:: 2022
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: kamieniołomy
Jura
ochrona
nauka
edukacja
quarries
Jurassic
protection
science
education
Opis:: Abandoned quarries in the Wieluń Upland at Działoszyn and Wieluń in central Poland are of unique value for the detailed stratigraphical, palaeontological, sedimentological and palaeogeographical studies of the Oxfordian and Kimmeridgian stages (especially the Upper Oxfordian and Lower Kimmeridgian substages) of the Jurassic System in Europe. It is because they yield the successions of deposits containing diverse assemblages of ammonites of a great significance for stratigraphical correlation, including that corresponding to the stratigraphical interval at the newly accepted global stratotype (GSSP) between the Oxfordian and the Kimmeridgian. Moreover, the quarries show the last Late Jurassic deposits placed towards the west in central Poland and preserved against the erosion, thus of high importance for the palaeogeographical reconstructions. The quarries offer also a special opportunity for educational purposes, and might become local geological attractions as they contain abundant fossils. Additionally, due to the fact that the Wieluń Upland, especially the environs of Działoszyn, has been one of the main areas of exploitation of limestones in Poland - the scientific value of the collected material and the history of the limestone mining could be presented in a specially prepared exhibition at the local museum, supported by geo-educational paths marked out in the abandoned quarries. Cooperation between the scientific community, local administration centers, and the owners of the quarries is of fundamental importance for the subject.
Źródło:: Przegląd Geologiczny; 2022, 70, 11; 800-805
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Porowatość wapieni jurajskich w profilu pionowym rejonu ujęcia Łobodno k. Kłobucka
The porosity of the Jurassic limestones in the vertical profile Łobodno water intake area near Kłobuck
Autorzy:: Nikiel, G.
Sobik-Szołtysek, J.
Powiązania:: https://bibliotekanauki.pl/articles/2075451.pdf
Data publikacji:: 2015
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: porowatość
przestrzeń porowa
wapienie jurajskie
porosity
pore space
jurassic limestones
Opis:: The article presents the results of investigations the porosity of the limestone of the Upper and Middle Jurassic. The open porosity was tested on samples cut from the core in the borehole of the P-1 with a depth of 80 m which was drilled in the groundwater intake Łobodno near Kłobuck. For testing were prepared 59 samples from 23 ranges a depth. Examination of open porosity were made using hydrostatic weighing the samples saturated with water in in a vacuum chamber. The tests which were conducted show a large variability of the open porosity of the Jurassic limestone in the vertical profile containing in the range of 4–24%.
Źródło:: Przegląd Geologiczny; 2015, 63, 10/2; 972--975
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Dedolomityzacja w górnojurajskich skałach węglanowych z okolic Krakowa
Dedolomitization of Upper Jurassic carbonates in the Cracow area (southern Poland)
Autorzy:: Vierek, A.
Powiązania:: https://bibliotekanauki.pl/articles/2074387.pdf
Data publikacji:: 2005
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: dedolomityzacja
dolomityzacja
katodoluminescencja
jura
Kraków
dedolomitization
dolomitization
cathodoluminescence
Upper Jurassic
Cracow
Opis:: The Upper Jurassic limestones in the vicinity of Cracow underwent extensive dedolomitization process. Petrographic and cathodoluminescent analyses of carbonates in four test areas confirm the dedolomitization as have been developed with various intensity. The alteration of dolomite into calcite occurs as centripetal and centrifugal dedolomitization. Both processes lead finally to a complete disintegration of the dolomite crystals; calcite pseudomorphs after dolorhombs are the end products. These calcite pseudomorphs are abundant in limestones of St. Anna Mt. and in the Kostrze quarry, but are scarce in the Twardowski Cliffs area and in the outcrop of Księża Mt., which indicates a less advanced and slower dedolomitization process in the latter two areas. Most probably the initiation of dedolomitization started from the moment when a carbonate bank emerged from the sea water (Vierek, 2003); temperature of mixing fluids decreased considerably, whereas Ca 2+/Mg+- ratio in the same fluids increased.
Źródło:: Przegląd Geologiczny; 2005, 53, 2; 156--161
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Geopark Owadów-Brzezinki : niezwykłe stanowisko paleontologiczne udostępnione geoturystycznie
The Owadów-Brzezinki Geopark : aremarkable palaeontological site made available for geotourism
Autorzy:: Błażejowski, Błażej
Gieszcz, Piotr
Siuda, Robert
Tyborowski, Daniel
Wierzbowski, Andrzej
Powiązania:: https://bibliotekanauki.pl/articles/2075999.pdf
Data publikacji:: 2020
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: geopark
geoturystyka
skamieliny
Owadów-Brzezinki
późna jura
geotourism
fossils
Late Jurassic
Opis:: The Owadów-Brzezinki Geopark, located in the western margin of the Holy Cross Mountains in Slawno community (Łódź Voivodeship), was established in June 2019 in close vicinity of the Owadów-Brzezinki quarry. The geopark consists of palaeontological museum, educational trail and panoramic viewing platform, located along the quarry edge. The palaeontological museum exhibits unique fossils of marine and terrestrial organisms that were excavated in the quarry during the last six years. Among the most important fossils, which can be seen there are: horseshoe crabs, crustaceans, ammonites, insects, actinopterygian fish, turtles, ichthyosaurs, crocodylomorphs and pterosaurs. In addition to the original fossils, the museum presents life-size reconstructions of animals that inhabited the local seas and islands in the Late Jurassic, and plates illustating palaeogeographical and paleoenvironmental history of this site. Thanks to many important palaeontological and palaeobiological discoveries, this geopark has great geotourist and educational potential. The geopark’s design was drawn upon similar palaeontological museums such as the Jura Museum Eichstätt in the Solnhofen region and the Hauff Museum in the Holzmaden in Germany.
Źródło:: Przegląd Geologiczny; 2020, 68, 1; 45--49
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Profil keloweju i górnej jury w niecce Nidy
The Callovian and Upper Jurassic section in the Nida Trough
Autorzy:: Złonkiewicz, Z.
Powiązania:: https://bibliotekanauki.pl/articles/2074716.pdf
Data publikacji:: 2009
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: niecka Nidy
litostratygrafia
profil keloweju
górna jura
Nida Trough
lithostratigraphy
Upper Jurassic
Opis:: The Callovian and Upper Jurassic strata in the Nida Trough are similar to those from SW margin of Holy Cross Mountains, so the same lithostratigraphic pattern may be applied. Three facies zones are distinguished: NW, central and SE. Black deposits of the Middle Jurassic are covered by the Sandy Limestones and Marls (lower Callovian–Bukowskii Subz. Cordatum Z.). Locally, these strata are separated by the Calcareous Sandstones (uppermost Bathonian–lower Callovian). The Marly Limestones and Marls represent Bukowskii Subz. Cordatum Z.- Plicatilis Z. The Morawica Limestones represent Plicatilis Z.–Bimammatum Z. The Siedlce Limestones (facies: pelitic, pelitic-sponge, pelitic-coral) reach the Platynota Z. in central andNWpart and the top of Hypselocyclum Z. in a narrow zone in SE part of Nida Trough. The Chalky Limestones (facies: pelitic, biostromal) are equivalents of the uppermost Siedlce Limestones in the centre of the Nida Trough. Beyond this narrow zone in the SE part of the Nida Trough, the Lowermost Marly Horizon (Platynota Z.) and deposits of shallow water carbonate platform (Platynota Z.–Hypselocyclum Z.), Lower & Upper Oolites, Banded Limestones, Oolite-Platy Member, Platy Detrital Limestones, Platy Limestones and Underlying Shales are distinguished. The uppermost part of the incomplete section (Divisum Z. and Mutabilis Z.) is represented by the Skorków Lumachelles and Upper Platy Limestones in the entire Nida Trough while the Staniewice Lumachelles occur in its SE part. The knowledge of the Middle– Upper Jurassic deposits of the Nida Trough is important for palaeogeographical reconstructions of the whole Southern Poland, as the Nida Trough links other regions where the Jurassic deposits are well recognized in numerous outcrops and borehole sections.
Źródło:: Przegląd Geologiczny; 2009, 57, 6; 521-530
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Charakterystyka jurajskich mszywiołów południowej Polski w aspekcie warunków paleooerodowiska i biogeografii
Characteristics of Jurassic bryozoans from southern Poland in palaeoecological and biogeographical aspects
Autorzy:: Hara, U.
Powiązania:: https://bibliotekanauki.pl/articles/2074500.pdf
Data publikacji:: 2007
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: jura
mszywioły
różnorodność
paleośrodowisko
biogeografia
Jurassic
bryozoan assemblages
cyclostomes
diversity
palaeoecology
biogeography
Opis:: A few distinctive bryozoan assemblages have been recognized in the Middle and Upper Jurassic sediments of southern Poland. The biota moderately rich in bryozoan taxa are generally restricted to a few cyclostome genera and dominated respectively by tubuloporines among which the majority form a fan-shaped or discoidal [bereniciform], encrusting colonies previously called "Berenieca", a bryozoan ubiquitous in the Jurassic. The Lower and Upper Callovian epifaunal bryozoan community of the vicinity of Cracow at Zalas in the Cracow Upland is represented by well-known Jurassic Stomatopora Bronn, Hyporosopora Canu & Bassler and Microeciella Taylor & Sequeiros, genera, as well as the other undeterminated, numerous bereniciform colonies. In terms of the species richness the most diversified is the Early Oxfordian bryozoan assemblage of the Ćmielów area [NW margin of the Holy Cross Mts], associated with an open shelf biohermal sedimentation, which was replaced later [during the transversarium and bifurcatues zones] by the shallow-water, soft-bottom coral buildups, among which the bryozoans are well-represented and described from Bałtów. The presence of the ?Late Tithonian–Berriasian bryozoan fauna has been documented in the thin-sections of the Stramberk limestones of the Polish Flysch Carpathians. Palaeoecological aspects of the studied bryozoan biotas are related to the nature and relative abundance of the colonial growth forms, the substrate type and other ecological factors. The moderately rich occurrence of the bryozoans in the Late Middle and Upper Jurassic sequences of Poland shows a different pattern of distribution than the biotas of the northwestern Europe which display the greatest species diversity in the Middle Jurassic [Bathonian]. The taxonomical and biogeographical studies of the Jurassic bryozoan biotas of Poland, in spite of the great patchiness in the global distribution of the Jurassic cyclostomes, has a key significance for the evolutionary radiation pattern and may add new data, whether this fauna originated and started to radiate in the Late Middle or the Upper Jurassic, or this event was mostly connected with the facies migration from west to east.
Źródło:: Przegląd Geologiczny; 2007, 55, 1; 54-60
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Skały syderytowe jury środkowej Kujaw : studium petrologiczne
The Middle Jurassic sideritic rocks of the Kujawy area : petrological study
Autorzy:: Maliszewska, A.
Kozłowska, A.
Kuberska, M.
Powiązania:: https://bibliotekanauki.pl/articles/2075830.pdf
Data publikacji:: 2018
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: syderytowe skały
diageneza
jura środkowa
Kujawy
sideritic rocks
diagenesis
Middle Jurassic
Kujawy area
Opis:: The paper presents the results of new mineralogical and petrographic analyses of Middle Jurassic sideritic rocks in the Kujawy area. The scope of the research has been extended to the Ciechocinek-Brześć Kujawski-Wojszyce zone, where clayey and sandy siderites and sideritic coquina form only inserts in siliciclastic rocks. Early diagenetic sideroplesite and mesodiagenetic sideroplesite, Fe-dolomite, ankerite, pistomestite and calcite occur among carbonate minerals. They are accompanied by an early diagenetic green mineral called chamosite and identified as berthierine in the XRD analysis. The richest mineral composition occurs in the sideritic coquina containing various shell elements, often also ooids. It is suggested that the formation of the coquina in the Klodawa-Łęczyca anticline area was caused by saline movements of the Cimmerian orogeny. The start-up and blending of salt masses and the rockfracture contributed to the intensive circulation of mineralizing solutions and the development of diagenetic processes, especially the replacement of unstable components and the cementation of Jurassic sediments throughout the Kujawy area.
Źródło:: Przegląd Geologiczny; 2018, 66, 4; 240--251
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Petrografia i proweniencja piaskowców jury dolnej formacji piaskowca z Koperszadów w jednostce kriżniańskiej rejonu Kop Sołtysich w Tatrach
Petrography and provenance of Lower Jurassic sandstones of the Med’odoly Sandstone Formation in the Krina Unit of the Kopy Sołtysie region in the Tatra Mountains
Autorzy:: Popiołek, M.
Salata, D.
Uchman, A.
Powiązania:: https://bibliotekanauki.pl/articles/2074756.pdf
Data publikacji:: 2010
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: petrografia
proweniencja
piaskowce
jura dolna
Tatry
petrography
provenance
sandstones
Lower Jurassic
Tatra Mts.
Opis:: Petrographic types of sandstones belonging to the Baboš Quartzite Mb (Sinemurian) and the Waksmundzka Sandstone Mb (Sinemurian-Lotharingian) of the Med’odoly Sandstone Fm (Krina Unit, Fatricum) in the Kopy Sołtysie region were identified. In the literature, they were usually described as quartzites or quartzose sandstones, but in fact they represent quartz arenites or subarkose arenites. Their composition indicates that the source of clastic material was of a cratonic interior type or related to a recycled orogenic material rich in quartz. It is possible that the source was located in elevated parts of the Tatricum or Hronicum domains. Sedimentary features and facies context point to deepeningm of sedimentary environment from the shallower shelf (Baboš Quartzite Mb) to that of a deeper shelf (Waksmundzka Sandstone Mb).
Źródło:: Przegląd Geologiczny; 2010, 58, 2; 154-162
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Kamień podkrakowskich budowli romańskich
Building stones used in Romansque edifices in the vicinity of Kraków
Autorzy:: Bromowicz, Jan
Magiera, Janusz
Powiązania:: https://bibliotekanauki.pl/articles/2076212.pdf
Data publikacji:: 2021
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: okres romański
kamieniarstwo
piaskowiec istebniański
Romanesque period
masonry
Istebna sandstone
Upper Jurassic limestone
Opis:: Three objects were studied within a project aimed at investigation of stones used in the Romanesque edifices in the vicinity of Kraków, and continued since 2019. These are the churches in Dziekanowice (21 km SE of Kraków) and in Czchów (58 km SE of Kraków), and a clergy house in Morawica (13 W of the Kraków city centre). The church in Dziekanowice is relatively completely and well preserved, while the only Romanesque remnants of the church in Czchów are those reused in the Gothic church. It is a clergy house in Morawica (a former castle), whose walls contain Romanesque fragments. Two former edifices are built of the Istebna sandstone (Upper Cretaceous-Paleogene), quarried from the local flysch bedrock. Fine-grained, grey-yellowish stone dominates. It is soft and easily workable due to argillaceous binder (matrix). The stone blocks are precisely shaped and well fitted. Romanesque remnants of the clergy house in Morawica are con- structed predominantly of limestone, also of local origin. Only a fragment of the NW wall is built of the Istebna sandstone. This fragment is probably a part of the butress supporting the NW wall. The study shows that stonemasons and builders of that time had good skills of selecting and applying proper stone blocks for particular purposes. Blocks used in load-bearing structures were exceptionally well shaped and fitted. On the other hand, those skills varied. The frieze from the Romanesque church in Czchów is rather primitive. The size of limestone blocks used in the clergy house in Morawica is strikingly similar to those of various Romanesque edifices in Kraków. It seems, therefore, that those blocks could have been quarried and shaped in quarries located in the city, where the masonry “industry” was well developed. Larger, irregular blocks, used as foundations and filler in the “opus emplectum” type walls were probably quarried on site. Moreover, stones used in more eminent edifices (churches, castles) were probably more carefully selected. The Morawica castle (clergy house) and many churches in Kraków were built of limestone blocks without cherts.
Źródło:: Przegląd Geologiczny; 2021, 69, 2; 103--108
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Konkrecje hiatusowe z iłów rudonśnych Wyżyny Krakowsko-Częstochowskiej
Hiatus concretions fromthe ore-bearing clays of the Cracow-Czestochowa Upland (Polish Jura)
Autorzy:: Zatoń, M.
Marynowski, L.
Bzowska, G.
Powiązania:: https://bibliotekanauki.pl/articles/2074474.pdf
Data publikacji:: 2006
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: konkrecje hiatusowe
Wyżyna Krakowsko-Częstochowska
hiatus concretions
Middle Jurassic
Cracow-Częstochowa Upland
borers
encrusters
Opis:: Hiatus concretions are arly-diagenetic sedimentary bodies, which in their history of formation, underwent exhumation during sedimentation break and/or erosion of sea-floor. Then they were colonized by various encrusters and borers, before they were buried again. Within Middle Jurassic (Bajocian through Bathonian) clays, hiatus concretions occur in four localities in the Cracow-Częstochowa Upland (south and central Poland): Ogrodzieniec, Bugaj, Mokrsko and Krzyworzeka. Preliminary data about their mineralogy, organic geochemistry and palaeoecology is given. Mineralogical analyses showed, that except dominant high Mg-calcite (up to 87.10% of total carbonates), concretions possess minor amounts of such compounds as quartz, clay minerals (kaolinite and illite), pyrite, siderite or Mg-kutnahorite. However, high differences are observed between total organic carbon contents of concretions (TOC=0.46%) and surrounded clays (TOC = 2.16%), but their molecular composition is similar. Most of identified biomarkers are of terrestrial origin. In clay lithology, the hiatus concretions are the only sedimentary bodies that clearly mark the sedimentation pauses (hiatuses). In the investigated area, they form more or less continuous horizons. The concretions are calcitic, possessing various encrusting fauna such as bryozoans, oysters and oyster-like bivalves, serpulids, solitary corals and foraminifers. They often post-date the borings, belonging to such ichnogenera as Gastrochaenolites, Trypanites and Entobia. Some of the nodules show distinct transition from firmground (characterized by the presence of Glossifungites ichnocoenosis) to hardground (presence of Trypanites ichnocoenosis), pointing to the fact, that they formed at, or very close to, the sediment-water interface. Some concretions, like those from Bugaj and Mokrsko, are characterized by their high diversity of hard bottom communities. Those concretions are also irregular in shape; others, like those from Ogrodzieniec and Krzyworzeka, possess lower diversity. The concretions from Krzyworzeka are especially dominated by the borers, while the encrusters are sparse and not diverse. Those nodules that are wide and flat tend to be more bored on one surface only, while those that are more roundish, are bored on both sides more evenly. The degree of diversity is probably correlated with physical disturbance, causing the rolling and overturning of the exhumed concretions in the littoral zone. On the other hand, the overall diversity could be lowered due to destructive abrasion either of the shallowest borings, echinoid/gastropod scratch marks and shells of nestling bivalves, as well as more delicate epilithozoans.
Źródło:: Przegląd Geologiczny; 2006, 54, 2; 131-138
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Porowatość matrycy wapieni i margli jury górnej w rejonie Olkusza
Matrix porosity of upper jurassic limestones and marls in the olkusz area
Autorzy:: Juśko, K.
Motyka, J.
Postawa, A.
Powiązania:: https://bibliotekanauki.pl/articles/2075391.pdf
Data publikacji:: 2015
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: porowatość otwarta
olkuski region górniczy
wapienie jurajskie
open porosity
Olkusz Mining region
jurassic limestones
Opis:: The article presents results of laboratory open porosity analysis on 167 Jurassic limestones and marls samples. Samples was taken from five boreholes drilled on the East of the Olkusz Zn-Pb mining region. Statistical methods was used to elaborate of the research results. The mean, standard deviation and maximum and minimum value was calculated. The variability of open porosity with depth was shown on the example of one borehole. Relationship of the parameter in the rock samples taken horizontal and vertical to the bedding was analyzed.
Źródło:: Przegląd Geologiczny; 2015, 63, 10/1; 801--804
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Ewolucja basenu niecki miechowskiej w jurze jako rezultat regionalnych przemian tektonicznych
Evolution of the Miechów Depression basin in the Jurassic as a result of regional tectonical changes
Autorzy:: Złonkiewicz, Z.
Powiązania:: https://bibliotekanauki.pl/articles/2074456.pdf
Data publikacji:: 2006
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: niecka miechowska
paleogeografia
jura
Miechów Depression
Włoszczowa Massif
Mid-Polish Trough
Jurassic
palaeotectonics
oblique extension
Opis:: Evolution of a sedimentary basin in the Miechów Depression (MD) during the Jurassic was due to the synsedimentary tectonic activity of the Caledonian–Variscan structures. There was a local zone of maximal subsidence extending NW–SE in its area. The Włoszczowa Massif (WM) in the basement of the Permian-Mesozoic cover in central and NW part of theMD was an element of a little lesser subsidence in comparison to the adjacent NW and SE areas. A narrow graben in the Lasocin–Strzelce Dislocation Zone separated it from the Holy Cross Mts. Block (HCM). The Mid-Polish Trough invaded the MD from the NW. The edge of WM (Pilica Fault) limited a reach of the pre-Bathonian SE ingressions. In addition, transgression from an inland basin (from SE) developed since the Bathonian. Grabens and horsts elongated NNW–SSE were formed in the central part of MD. They continued further S-wards beyond the edge of the Carpathians. In the Callovian and Late Jurassic facial zones in the central and NW part of the MD were elongated NW–SE. The zone of major subsidence was located between Pągów and Kostki Małe and stretched further SE into the basin of the Carpathian Foreland. During the Late Oxfordian and Kimmeridgian the shallowest zone of the basinSWto theHCMwas located in theNpart of the WM. Structures formed in the MD area pointed at an oblique extension directed to NW. It was effected by palaeostress directed to NW, stronger in the NW part of the area and gradualy decreasing. The stress reactivated two oblique-slip fault systems: Kraków–Lubliniec and Lasocin–Strzelce. Also an increasing tension to W, stronger in its S part, might be recognized. It activated the Zawiercie Fault in the Late Bajocian and caused left-slip rotation of the WM in the Late Oxfordian. The tectonic model controlling sedimentation during the Latest Jurassic and Early Cretaceous was very similar to the pattern of subsiding and elevating zones formed in this area during Variscan compression. The Mid-Polish Trough was formed by dextral extension and reactivation of dislocations parallel to the edge of the East European Craton. The consolidated HCM-block belonged to a zone of elevated blocks, characteristic for the axial part of an extension basin.
Źródło:: Przegląd Geologiczny; 2006, 54, 6; 534-540
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Zagadkowa roślina z wczesnej jury Gór Świętokrzyskich
An Early Jurassic problematical plant from the Holy Cross Mountains, central Poland
Autorzy:: Gierliński, G.D.
Ploch, I.
Sabath, K.
Ziaja, J.
Powiązania:: https://bibliotekanauki.pl/articles/2074472.pdf
Data publikacji:: 2006
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: roślina nagozalążkowa
skamieniałość roślinna
wczesna jura
Góry Świętokrzyskie
Gymnospermae
macroflora
plant fossils
Early Jurassic
palaeoecology
Opis:: Fossils plants (less than 0.5 m high) preserved in upright position were found in Śmiłów Quarry (E of Szydłowiec) at the northern slope of the Holy Cross Mountains. The plants were preserved as impressions of ascending narrow-leafed stems in fine-grained sandstone of the Drzewica Formation (upper Pliensbachian). The leaves are 5-25 cm long and about 2-5 mm wide; the angle between them and the short main axis ranges within 20-30o. Morphology of the plant resembles schizeacean ferns, but also that of Aethophyllum stipulare Brongniart 1828 from Anisian of France, recognized by Grauvogel-Stamm (1978) as an herbaceous gymnosperm. Grauvogel-Stamm (1978) supposed that the leaves Podozamites and cone scales Swedenborgia, common in Jurassic strata of higher palaeolatitudes, are derived from descendants of Aethophyllum. Podozamites leaves often occur in many dinosaur track-bearing horizons in the Polish Jurassic. Thus, herbaceous conifers might have played an important and often underestimated role in the Mesozoic ecosystems (possibly as a substantial part of dinosaur diet). The possiblity of coniferous equivalents of Cenophytic herbaceous angiosperms, as well as a possibility of their coevolution with Mesozoic low browsing and grazing herbivore megafauna is worth further palaeobotanical and palaeoecological studies.
Źródło:: Przegląd Geologiczny; 2006, 54, 2; 139-141
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Gniazdowe akumulacje szczątków fauny w środkowojurajskich iłach rudonośnych Wyżyny Krakowsko-Częstochowskiej-wnioski paleobiologiczne
Nest-like accumulations of faunal remains in the Middle Jurassic ore-bearing clays of the Kraków-Czestochowa Upland and their palaeobiological implications
Autorzy:: Zatoń, M.
Salamon, M. A.
Marynowski, L.
Zatoń, R.
Powiązania:: https://bibliotekanauki.pl/articles/2074537.pdf
Data publikacji:: 2007
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: średnia Jura
Polska
fragmenty skorup
szczątki organiczne
Middle Jurassic
Polska
predation
shell fragments
shelly fossils
Opis:: Distinct faunal accumulations in the uppermost Bajocian/lowermost Bathonian, lowermost and Middle Bathonian of the Polish Jura (south-central Poland) have been detected. The fossils are densely packed in the centre of the accumulations and more or less dispersed in their margins. The accumulations vary in size, but all are rich in various groups of organisms, of which the molluscs (mainly bivalves) and echinoderms predominate. The echinoderms are all disarticulated, and shelly fauna occur as angular fragments with sharp edges, of random sizes and without any signs of abrasion. The different sizes of the fossil remains, from tiny echinoderm ossicles or juvenile shelly fauna to medium-sized shell fragments or belemnite rostra, exclude any transportation and thus sorting. Worth of noting is the occurrence of similar faunal groups in each accumulation. The general shape and composition of the accumulations, as well as their taphonomical features, especially the angularity of shell fragments, point to durophagous (shell-crushing) predation rather than physical processes. The various organisms may indicate that the potential predator (most probably fish) fed on various invertebrates. The indigestible particles were later regurgitated forming the accumulations discussed. The presence of various epibionts on the fossil fragments indicate,that they rested upon the sea-floor for some time-span after they had been regurgitated. Then the scavengers, as well as current action or water movements, have been responsible for dispersion of some of the fossils, as is well-visible at the margins of the investigated accumulations..
Źródło:: Przegląd Geologiczny; 2007, 55, 5; 424-429
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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