Autor: Gradziński, R. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Sedymentacja osadów węglonośnej sukcesji Górnośląskiego Zagłębia Węglowego : kierunki badań i aktualny stan wiedzy
Sedimentation of the coal-bearing succession in the Upper Silesia Coal Basin: research trends and the current state of knowledge
Autorzy:: Gradziński, R.
Doktor, M.
Kędzior, A.
Powiązania:: https://bibliotekanauki.pl/articles/2074364.pdf
Data publikacji:: 2005
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: sedymentologia
węglonośna sukcesja
Górnośląskie Zagłębie Węglowe
sedimentation
coal-bearing succession
Pennsylvanian
Upper Silesian Coal Basin
Polska
Opis:: The coal-bearing succession in the Upper Silesia Coal Basin consists of molasse deposits filling a flexural foredeep basin. Analysis of lithofacies in cores from deep boreholes revealed the presence of depositional environments typical of alluvial plains and coastal (in a broad sense) environments. Accumulation compensated regional subsidence, so that general depositional surface remained nearly flat. The higher part of the csuccession was laid in fluvial systems, while the lower part mostly in fluvial systems and subordinately in complex coastal systems. Reconstruction of depositional architecture has shown lateral variation in thickness and extent of individual lithosomes, and also pointed to the role of peat-compaction control in shaping their 3D geometry. Sedimentation was controlled by both autigenic and allogenic factors.
Źródło:: Przegląd Geologiczny; 2005, 53, 9; 734-741
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Tytuł:: In-channel accretionary macroforms in the modern anastomosing system of the upper Narew River, NE Poland
Autorzy:: Gradziński, R.
Baryła, J.
Doktor, M.
Gmur, D.
Gradziński, M.
Kędzior, A.
Paszkowski, M.
Soja, R.
Zieliński, T.
Żurek, S.
Powiązania:: https://bibliotekanauki.pl/articles/191527.pdf
Data publikacji:: 2003
Wydawca:: Polskie Towarzystwo Geologiczne
Tematy:: anastomosing river
sand bars
vegetation
Polska
Opis:: Predomination of sandy bedload is typical of the anastomosing channels of the Narew River. Several types of in-channel accretionary macroforms have been found in these channels: side bars, concave-bank bars, plug bars, point bars, linguoid bars, and mid-channel bars. The first three types are relatively rare, point bars occur only exceptionally, while linguoid bars and mid-channel bars are quite common. The bars usually occur in main channels, which are the master routes of sand transport in the whole anastomosing system of the Narew. The lower parts of the bars are built of coarse- and medium-grained sand, similarly to the sediments in the deeper parts of the channels. Fine-grained sand, locally alternating with organic-rich muddy sand, predominates usually in the upper parts; peat with high content of sand is present in the highest parts of some bars. All bars are rapidly colonised and stabilised by plants. It is for this reason and due to the low energy of the river that the bar sediments have a high preservation potential. The development of bars is usually not accompanied by lateral migration of channels. Consequently, sediment accretion in bars is one of the factors leading to gradual narrowing of channels. Deposits of some sand-bars, when preserved in fossil record, may probably be represented by characteristic "wings" in the outer parts of ribbon-like sand bodies.
Źródło:: Annales Societatis Geologorum Poloniae; 2003, 73, No 1; 35-53
0208-9068
Pojawia się w:: Annales Societatis Geologorum Poloniae
Dostawca treści:: Biblioteka Nauki

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