Wyniki wyszukiwania - Biblioteka Nauki

1

Clastic Badenian deposits and sedimentary environments of the Roztocze Hills across the Polish-Ukrainian border

100%

Wysocka A.

|

2002

|

tom Vol. 52, nr 4

535-561

EN

The sedimentary conditions of the clastic Badenian deposits of the Roztocze Hills are reconstructed, in the territories of Poland and Ukraine. Detailed sedimentological analyses are performed for fourteen exposures. Four petrographic rock types: quartz arenites, quartz arenites with limeclasts, calcarenites with quartz and biocalcarenites have been distinguished. The lithology and microfacies of these rocks point to a high-energy, shallow-water, normalmarine environment connected with the shore zone. Moreover, diversified sets of sedimentological structures, including depositional, deformational and biogenic, are ascribed to the shallow-water high-energy environment. The characteristics of the Badenian succession allow an interpretation of the environment and its change during sedimentation. Deposition during the Badenian in the Roztocze area was connected with the evolution of the Carpathian Foredeep. Initially sedimentation was mainly dependent on hydrodynamic factors, however the influence of diastrophic factors gradually increased.

2

The Lower Badenian (Middle Miocene) coral patch reef at Grobie (southern slopes of the Holy Cross Mountains, Central Poland), its origin, development and demise

86%

Górka M.

|

2002

|

tom Vol. 52, nr 4

521-534

EN

The Lower Badenian (Middle Miocene) patch reef of Grobie (southern slopes of the Holy Cross Mountains, Central Poland) is the only coral buildup in the Polish Miocene. It contains four hermatypic coral taxa, of which Tarbellastraea reussiana (MILNE EDWARDS & HAIME) and Porites collegniana MICHELIN dominate, whereas Montastraea sp. and Stylophora reussiana MONTANARO-GALLITELLI & TACOLI are subordinate. Wide diversities of colony shapes in this coral assemblage reflect natural development of the reefal structure and/or energy of environment; it varies from platy colonies (first settlers on an unconsolidated, pebble-strewn substrate), through branching, to massive forms. Wave activity was the most significant factor that influenced the reef core and distribution of associated facies. Disintegration and removal of reef core sediment led to the formation of crack crevices in freshly lithified deposits. Redeposited sediment formed the back-reef talus, where its composition varied with distance from the reef core. Reef-associated molluscs and decapods are abundant, the bivalves represented by high-energy resistant borers (Lithophaga sp., Jouannetia (J.) semicaudata DES MOULINS) and the squatter Sphenia (S.) anatina (BASTEROT). Among 21 decapod taxa, the species Dardanus hungaricus (LORENTHEY, 1929) is reported from Poland for the first time. Recognition of the diversity of facies and their distribution enabled reconstruction of Grobie area during the Early Badenian transgression. Slowing and/or stopping of sea-level rise encouraged development of the patch reef, while subsequent, rapid transgressive pulse caused its demise. Shortly after all reefal deposits were buried, diagenetic processes of neomorphisation and/or dissolution of aragonitic skeletal elements took place. This diagenesis could have continued till the Late Miocene and Pliocene, synchronously with rapid erosion that progressed since Early Sarmatian until the Pleistocene glaciations.

3

Fizykochemiczne warunki sedymentacji w przedkarpackim badeńskim basenie ewaporatowym na obszarze Ukrainy

72%

Poberezhsky A. V.

|

2000

|

tom Vol. 48, nr 2

151-153

PL

Pierwszy etap rozwoju badeńskiego zbiornika ewaporatowego zapadliska przedkarpackiego cechował się stopniowym wzrostem zasolenia wody, która nie różniła się swoim składem chemicznym od współczesnej wody morskiej. Etap ten zakończył się wytrąceniem halitu. Drugi etap rozpoczął się od obniżenia zasolenia solanek i zmniejszenia udziału chlorków potasu i magnezu oraz przez zmianę wytrącania halitu na wytrącanie gipsu. Ogólna mineralizacja wody w basenie zmalała w porównaniu z etapem halitowym 2-5 razy i osiągała chwilami 65-150 g/l. Istnienie basenu ewaporatowego zakończyło się precypitacją węglanów ratyńskich przykrywających gipsy. Geneza tych węglanów jest związana z redukcją siarczanów w stagnującej wodzie basenu ewaporatowego na ostatnim etapie jego rozwoju.

EN

The first stage of the development of Badenian evaporite basin in the Carpathian Foredeep was characterised by a gradual increase in salinity of the water, which did not differ by its chemical composition from modern saturated sea water. This stage was terminated by precipitation of halite. The second stage began from the refreshment of solutions and the decrease of importance of potassium and magnesium chlorides and by change of halite precipitation to gypsum one. The total mineralization of water in the basin decreased in comparison to the halite stage by 2-5 times and reached in moments 65-150 g/l. The existence of evaporite basin was finished by precipitation of the Ratyn carbonates that overlie the gypsum series. Their origin is connected with sulphate-reduction in stagnant water of the evaporite basin on its last stage of development.

4

Paleoecology and organie matter in the Late Badenian and Early Sarmatian marine basin of the Polish part of the Carpathian Foredeep

72%

Czepiec I. , Kotarba M. J.

|

1998

|

tom Vol. 46, nr 8/2

732-736

EN

The studies aim to determine both the ecological and geochemical conditions of the Late Badenian and Early Sarmatian sedimentary basin located in the outer part of the Carpathian Foredeep. Particularly interesting are: depositional environment of organic matter, depth of the basin and water temperatures. The Late Badenian sea was presumably only slightly deeper than the outer shelf i.e. about 200 meters. The warm climate resembling that of the warm temperate zone resulted in surface water temperatures 17-20' C. In the Sarmatian the sea depth was initially about 30-50 meters thus, the existence of submarine meadows was inferred. Then, progressing shallowing to about 10 meters took place. The Sarmatian sea was a warm basin with temperatures roughly corresponding to those of the Late Badenian ones. Organic matter deposited during both the Badenian and the Sarmatian reveals terrestrial origin. Organic matter in the Late Badenian and Early Sarmatian strata is immature or, at most, early matured but at depth below 3000 meters. Very low correlation of both the concentrations and the maturation degree of the organic matter with its depth of occurrence suggest the similarity of sedimentary environments in the whole Miocene succession and the lack of thermal transformation after deposition. Almost exclusive occurrence of the humic organic matter points to the fast and rhythmic supply of terrestrial clay matter to the deltaic environments in the shallow Miocene basin. A rapid sedimentation of terrestrial, deltaic sediments took place in the Miocene basin, therefore the humic organic matter (type III kerogen) prevailed there and the marine type II kerogen was hardly detectable.

5

Petrologiczna charakterystyka soli badeńskich w złożu Siedlec-Moszczenica

72%

Toboła T.

|

2000

|

tom Vol. 48, nr 12

1187-1194

PL

Złoże soli kamiennej Siedlec-Moszczenica jest zachodnim przedłużeniem złoża bocheńskiego. Zostało ono odkryte i udokumentowane wiatach 60. i 70. XX w., a eksploatowane metodą podziemną do początku lat 90. Przeprowadzone prace geologiczno-poszukiwawcze oraz udostępniające złoże pozwoliły na ustalenie jego budowy geologicznej i profilu litostratygraficznego. Wobec likwidacji kopalni przeprowadzone obserwacje terenowe i badania laboratoryjne stanowią obecnie materiał archiwalny i porównawczy dla korelacji z sąsiednimi złożami soli kamiennych. Przedstawiona szczegółowa charakterystyka petrologiczna soli kamiennych poszczególnych kopleksów solnych złoża soli południowych, środkowych i północnych, wskazują, że różnią się one pomiędzy sobą zarówno udziałem materiału terygenicznego i formą jego występowania, jak również wykształceniem tworzących je soli kamiennych. W każdym kompleksie sole kamienne tworzą warstwy o bardzo zróżnicowanej miąższości, wahającej się od kilku centymetrów do kilku metrów. Wykazują one przy tym duże zróżnicowanie cech strukturalnych i teksturałnych. Rozdzielone są kilku lub kilkunastocentymetrowymi przerostami płonnymi.

EN

The Siedlec-Moszczenica rock-salt deposit is a westward extension of the Bochnia deposit. It has been discovered and opened in 1960-1970-ties, and exploited until the beginning of 1990-ties. Both the exploration and development works allowed to recognize the geology and lithostratigraphy of the deposit. Due to the abandonment of the mine the collected field and laboratory data are known the valuable archive material which can be used for correlation with the adjacent rock-salt deposits. The following paper presents the detailed petrology of salts from the three complexes: southern, central and northern. The complexes differ in the percentage of terrigenic material and its form of occurrence, as well as in development of salts. In each complex the salts form layers of highly diversified thickness, from several centimetres to several metres. Moreover, the salts reveal significant diversity of structural and textural features, and are separated by barren intercalations of thickness from a few to dozen of centimetres.