Temat: sedymentologia - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Niektóre zjawiska geologiczne w stanowiskach archeologicznych na przykładzie stanowiska w Dzierżysławiu : komunikat
Some geological events of artefacts on archaeological sites example of Dzierżysław archaeological site
Autorzy:: Pawlikowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/183932.pdf
Data publikacji:: 2007
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: sedymentologia
geoarcheologia
pogrązy
tonięcie
grzęźnięcie
sedimentology
geoarchaeology
sinking
Opis:: W artykule zaprezentowano wyniki badań terenowych i laboratoryjnych nad zjawiskami migracji archeologicznych zabytków krzemiennych po opuszczeniu stanowiska. Zjawiska te, zachodzące w większości stanowisk i obejmujące prawdopodobnie wszystkie rodzaje zabytków, są szczególnie dobrze widoczne w stanowiskach epoki kamienia ze względu na długi okres, który minął od ich opuszczenia przez człowieka. Umiejętność rozpoznania opisanych zjawisk w badanym stanowisku może decydować o poprawności rekonstrukcji faktów, które miały miejsce w przeszłości. W publikacji pokazano zjawiska migracji i grzęźnięcia zabytków krzemiennych na podstawie badań magdaleńskiego stanowiska w Dzierżysławiu i eksperymentalnych badań laboratoryjnych. Eksperymenty dotyczące zjawiska migracji zabytków potwierdziły różne tempo ich przemieszczania się. Zjawisko jest zależne od kształtu zabytków, ich ciężaru oraz środowiska, w jakim zabytki się znajdują. Małe i płaskie obiekty pogrążają się wolno, gdy tymczasem izometryczne i duże - szybciej. To wskazuje, że artefakty odkrywane w stanowiskach archeologicznych znajdują się w różnych stadiach migracji. Można także zauważyć, że migracja zabytków może być zróżnicowana nawet w obrębie jednego stanowiska archeologicznego.
This paper presents field and laboratory investigations concerning artefacts sinking in archaeological sites. These phenomena take place on most of archaeological sites. Most probably this process affect all categories of artefacts. Because of the time stone age sites are the best places to investigate sinking of artefacts. The correct interpretation of archaeological facts on the site could be based only on consciousness of the processes mentioned in this article. The particular example used here is Dzierżysław Magdalenian site and excavations on it as well as laboratory tests with "contemporaneous" flint flakes. Experiments concerning migration of artefacts confirmed various rate of their migration. Phenomenon is the result of shape of implements their weight as well as conditions at sediment. Small and flat objects migrated down slowly while isometric and heavy, faster. Was observed that during sinking tested objects did complicated motions. This suggest that artefacts discovered at archaeological sites are at various stages of migration. Moreover one can see that mentioned "activity" of objects is often various at various parts of one archaeological site.
Źródło:: Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie; 2007, 33, 4; 463-471
0138-0974
Pojawia się w:: Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Unusual development of sandur sedimentary succession, an example from the Pleistocene of S Poland
Autorzy:: Salamon, Tomasz
Zieliński, Tomasz
Powiązania:: https://bibliotekanauki.pl/articles/94593.pdf
Data publikacji:: 2010
Wydawca:: Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:: outwash deposits
sedimentology
Pleistocene
Polska
osady sandrowe
sedymentologia
plejstocen
Polska
Opis:: An atypical lithological development of outwash deposits in the Carpathians Foreland (S Poland) shows lower and middle parts of the sedimentary succession that are characterized by sinuous palaeochannels. This channel facies consists of laterally accreted sands derived from side bars. The sedimentary environment was a proglacial system of anabranching channels, presumably of anastomosed type. The outwash channel pattern was most probably controlled by the raising base level of the fluvial system. Both proglacial and extraglacial waters were dammed by a sandur within a small upland valley. Aggradation and progradation of the glaciofluvial deposits resulted in progressive rising of the dammed lake level. The low hydraulic gradient of the outwash streams resulted in a sinuous planform as well as a lowenergy style of deposition. Afterwards, the rising lake water was drained off through a low watershed and the entire valley became filled with outwash sediments. The bedrock morphology thus became buried and a typical unconfined sandur with a braided channel network developed during the last phase of the glaciomarginal sedimentation (upper part of the sedimentary succession under study).
Źródło:: Geologos; 2010, 16, 2; 83-99
1426-8981
2080-6574
Pojawia się w:: Geologos
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Silurian stratigraphy of Central Iran - an update
Autorzy:: Hairapetian, V.
Ghobadi Pour, M.
Popov, L. E.
Männik, P.
Miller, C. G.
Powiązania:: https://bibliotekanauki.pl/articles/139183.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Iran
Silurian
biostratigraphy
lithostratigraphy
sedimentology
correlation
sylur
biostratygrafia
litostratygrafia
sedymentologia
korelacja
Opis:: The Silurian biostratigraphy, lithostratigraphy, and facies of Central Iran including the Kashmar (Boghu Mountains), Tabas (Derenjal Mountains, Ozbak-Kuh), Anarak (Pol-e Khavand) and Kerman regions is reviewed and updated. The current state of knowledge of the Silurian in the Zagros Basin, Alborz, Kopet-Dagh and Talysh regions, as well as in a few areas scattered across the Sabzevar Zone, and the Sanandaj-Sirjan terranes is also reviewed. Silurian volcanism in various parts of Iran is briefly discussed. The end of the Ordovician coincided with a widespread regression across Iran synchronous with the Hirnantian glaciation, and only in the Zagros Basin is there a continuous Ordovician–Silurian transition represented by graptolitic black shales of the Sarchahan Formation. In the Central-East Iranian Platform marine sedimentation re-commenced in the early to mid Aeronian. By the Sheinwoodian, carbonate platform depositional environments were established along its north-eastern margin. In other parts of Iran (e.g., Kopet-Dagh and the Sabzevar Zone), siliciclastic sedimentation continued probably into the late Silurian. The Silurian conodont and brachiopod biostratigraphy of Central Iran is significantly updated facilitating a precise correlation with the Standard Global Chronostratigraphic Scale, as well as with key Silurian sections in other parts of Iran. The Silurian lithostratigraphy is considerably revised and two new lithostratigraphical units, namely the Boghu and Dahaneh-Kalut formations, are introduced.
Źródło:: Acta Geologica Polonica; 2017, 67, 2; 201-233
0001-5709
Pojawia się w:: Acta Geologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Badania złóż soli kamiennej i potasowo-magnezowej prowadzone w Państwowym Instytucie Geologicznym
PGI research of rock salt and K-Mg deposits
Autorzy:: Czapowski, Grzegorz
Peryt, Tadeusz, Marek
Powiązania:: https://bibliotekanauki.pl/articles/2074293.pdf
Data publikacji:: 2019
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: sole
złoża
baden
cechsztyn
sedymentologia
geochemia
salts
deposits
Baden
Zechstein
sedimentology
geochemistry
Opis:: Middle Miocene Badenian salt, occurring in the frontal zone of the Carpathian Overthrust (southern Poland), and the Upper Permian (Zechstein) bedded and diapir salt deposits, have been the subject of the research by PGI scientists. Many salt deposits were discovered by the PGI, but in particular, the greatest achievement related to the origin of salt deposits is the reconstruction of sedimentary environments and conditions based on detailed sedimentological and geochemical analyses.
Źródło:: Przegląd Geologiczny; 2019, 67, 7; 594--598
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The interpretative significance of ripple-derived sedimentary structures within an upper Neogene fluvial succession of central Poland
Autorzy:: Maciaszek, Piotr
Chomiak, Lilianna
Wachocki, Robert
Widera, Marek
Powiązania:: https://bibliotekanauki.pl/articles/94255.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:: sedimentology
depositional structures
ripples
anastomosing river
sedymentologia
struktury deponujące
riplemarki
rzeki anastomozujące
Opis:: Sedimentary structures discussed in the present study are genetically linked to ripples that consist of pure sand or alternating sand and mud layers. All types of ripple-related structures, such as climbing-ripple cross-lamination and heterolithic bedding, i.e., flaser, wavy and lenticular (nodular), have been identified for the first time in fluvial strata that have been characterised previously as commonly massive. These small-scale bedforms, produced by migrating ripples, have been documented in a fluvial channel of late Neogene age in central Poland. The abundance and co-occurrence of the structures discussed and their spatial distribution provide evidence of their formation under very low-energy conditions, when flow velocity changed markedly, but was often significantly less than 0.5 m/s. Therefore, these ripple-derived sedimentary structures are here recognised as typical of channel fills of an anastomosing river.
Źródło:: Geologos; 2019, 25, 1; 1-13
1426-8981
2080-6574
Pojawia się w:: Geologos
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Stratigraphy and sedimentology of the Niger Delta
Autorzy:: Reijers, T. J. A.
Powiązania:: https://bibliotekanauki.pl/articles/94623.pdf
Data publikacji:: 2011
Wydawca:: Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:: Niger Delta
biostratigraphy
sedimentology
(mega)sequences
cycles
Delta Nigru
biostratygrafia
sedymentologia
cykle
Opis:: During the Cenozoic, until the Middle Miocene, the Niger Delta grew through pulses of sedimentation over an oceanward-dipping continental basement into the Gulf of Guinea; thereafter progradation took place over a landward-dipping oceanic basement. A 12,000 m thick succession of overall regressive, of flapping sediments resulted that is composed of three diachronous siliciclastic units: the deep-marine pro-delta Akata Group, the shallow-marine delta-front Agbada Group and the continental, delta-top Benin Group. Regionally, sediment dispersal was controlled by marine transgressive/regressive cycles related to eustatic sea-level changes with varying duration. Differential subsidence locally influenced sediment accumulation. Collectively, these controls resulted in eleven chronostratigraphically confined delta-wide megasequences with considerable internal lithological variation. The various sea-level cycles were in or out of phase with each other and with local subsidence, and interfered with each other and thus influenced the depositional processes. At the high inflection points of the long-term eustatic sea-level curve, floodings took place that resulted in delta-wide shale markers. At the low inflection points, erosional channels were formed that are often associated, downdip, with turbidites in low-stand sediments (LSTs). The megasequences contain regional transgressive claystone units (TST) followed by a range of heterogeneous fine-to-coarse progradational or aggradational siliciclastic (para)sequence sets formed during sea-level high-stand (HST). An updated biostratigraphic scheme for the Niger Delta is presented. It also updates a sedimentation model that takes into consideration local and delta-wide effects of sea-level cyclicity and delta tectonics. Megasequences were formed over time intervals of ~5 Ma within individual accurate megastructures that laterally linked into depobelts. The megasequences form the time-stratigraphic frame of the delta and are the backbone for the new delta-wide lithostratigraphy proposed here. Such a new lithostratigraphy is badly needed, in particular because of the vigorous new activity in the offshore part of the Niger Delta (not covered in this contribution). There, as well as in the onshore part of the delta, the traditional lithostratigraphic subdivision of the Cenozoic Niger Delta section into three formations is insufficient for optimum stratigraphic application; moreover, the various informal subdivisions that have been proposed over time are inconsistent.
Źródło:: Geologos; 2011, 17, 3; 133-162
1426-8981
2080-6574
Pojawia się w:: Geologos
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Kame or moraine? A sedimentological study of a glaciomarginal landform at Niedźwiedziny (Great Polish Lowland)
Autorzy:: Ewert-Krzemieniewska, A.
Powiązania:: https://bibliotekanauki.pl/articles/94579.pdf
Data publikacji:: 2014
Wydawca:: Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:: sedimentology
glaciomarginal zone
kame
Weichselian
Middle Poland
sedymentologia
strefa glacimarginalna
kem
Środkowa Polska
Opis:: A sedimentary succession in a gravel pit at Niedźwiedziny was investigated in order to determine its origin: kame or moraine. The gravel pit is located in an isolated hill of approx. 600 m long and 250–400 m wide. The succession is built of glaciofluvial deposits: a sandy/gravelly unit in the lower and middle parts, overlain by diamicton. Five lithofacies have been distinguished, which represent two facies associations: (1) a fluvial association evolving from a high-energy to a transitional to a shallow braided river on an alluvial fan, and (2) an association of cohesive deposits representing a glacigenic mass flow. The interpretation is based mainly on palaeocurrent data and differs from conclusions by earlier investigators. The ice-marginal zone is characterised by a large variety of glaciomarginal forms. Their sedimentology, morphology and palaeogeography are determined by successive phases of deglaciation. The results of the present study show that the character of the deglaciation in the study area changed with time from frontal to areal deglaciation.
Źródło:: Geologos; 2014, 20, 3; 167-181
1426-8981
2080-6574
Pojawia się w:: Geologos
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Small-scale cyclic deposition in the Frasnian (Upper Devonian) of the Holy Cross Mountains, Poland
Autorzy:: Vierek, A.
Powiązania:: https://bibliotekanauki.pl/articles/94648.pdf
Data publikacji:: 2014
Wydawca:: Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:: sedimentology
carbonate platform
limestones
shallowing-upward cycles
event beds
sedymentologia
platforma węglanowa
wapienie
Opis:: In sections exposing Frasnian limestones at five outcrops in the Holy Cross Mountains, five lithofacies (L1 to L5) that represent upper slope to basinal environments are identified. These lithofacies are characterised by dark-coloured micritic limestones–marly shale couplets with many light-coloured intercalations of fine- to coarse-grained limestones (= event beds). This lithofacies pattern characterises mostly low-energy domains punctuated by storm episodes. In addition, these upper-slope to basinal lithofacies are arranged into small-scale, coarsening-upward beds and cycles. The cycles are locally composed of fining/thinning-upward beds. The small-scale cycles have a calculated duration of 19 to 42 kyr. The differential thickness of beds and cycles within and between sections was probably caused by differential subsidence and local tectonics. Possible evidence of tectonic activity is also related to a difference in number of cycles recorded in the time-equivalent sections. The recognised cyclicity shows sea-level fluctuations and a few deepening episodes. Some of them are correlated with the Timan global eustatic events. However, local tectonics and episodic subsidence may have played a significant role in recording brief deepening pulses. Thus, low-amplitude sea-level changes were major factors in platform generation and evolution in the Frasnian of the Holy Cross Mountains modified by local, block-related subsidence.
Źródło:: Geologos; 2014, 20, 4; 239-258
1426-8981
2080-6574
Pojawia się w:: Geologos
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Sedymentologiczny i paleobotaniczny zapis zmian klimatu w plioceńskich osadach rzecznych południowo-wschodniej części Niziny Śląskiej
Sedimentological and palaeobotanical records of climatic changes within Pliocene fluvial sediments in the southeastern Silesian Lowland
Autorzy:: Badura, J.
Przybylski, B.
Salamon, T.
Winter, H.
Powiązania:: https://bibliotekanauki.pl/articles/2063344.pdf
Data publikacji:: 2006
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: sedymentologia
biostratygrafia
formacja Gozdnicy
pliocen
Nizina Śląska
sedimentology
biostratigraphy
Gozdnica Formation
Pliocene
Silesian Lowland
Opis:: W południowo-wschodniej części Niziny Śląskiej w międzyrzeczu Nysy Kłodzkiej i Odry występuje zwarty kompleks neogeńskich osadów rzecznych formacji Gozdnicy. Badania osadów tej formacji prowadzono na stanowisku Tułowice na Równinie Niemodlińskiej. Analiza minerałów ciężkich wykazała, że osady dolnej części profilu, o całkowitej miąższości 18 m, najprawdopodobniej są związane z Nysą Kłodzką, natomiast górnej — z Odrą. Szczegółowym badaniom sedymentologicznym poddano odsłaniające się w wyrobisku osady górnej części profilu. Wyróżniono cztery kompleksy osadów. Na podstawie analizy litofacjalnej stwierdzono, że trzy pierwsze kompleksy powstawały głównie w systemie rzeki meandrującej. Osady kompleksu 4 reprezentują natomiast rzekę o układzie anastomozującym. Próbki z mułowo-ilastych warstw kompleksu 1 i 2 poddano analizie paleobotanicznej. Wynikająca z niej zmienność szaty roślinnej wykazała tendencję do zmian krótkookresowych oscylacji średnich temperatur i wilgotności. Na podstawie badań spektrów pyłkowych stwierdzono plioceński wiek osadów. Transformacja układu koryta, wynikająca z analizy sukcesji osadowej, mogła mieć związek z coraz większymi zmianami klimatycznymi późnego pliocenu, bezpośrednio poprzedzającymi ochłodzenie z początku plejstocenu.
Neogene fluvial deposits of the Gozdnica Formation constitute a continuous cover in the southeastern part of the Silesian Lowland, in the Nysa Kłodzka and Odra interfluve. The 18 m thick succession of these deposits was studied in the Tułowice site on the Niemodlin Plain. Heavy mineral analysis indicates that deposits of the lower part of the succession were probably accumulated by the Nysa Kłodzka River, and those of the upper part — by the Odra River. Detailed sedimentological research was conducted in an excavation where the latter deposits are exposed. Four lithologic complexes were distinguished. It was found that three older complexes were formed mostly ha a meandering river system. The deposits of complex 4 represent alluvium of an anastomozing river system. Palaeobotanical analyses were made for silty-clayey deposits of complexes 1 and 2, and revealed plant cover variability indicating a climatic tendency for short-term oscillations of mean temperatures and humidity. Pollen spectra evidenced Pliocene age of the deposits under study. Both sedimentological and paleobotanical data indicate that the change of fluvial environment could have been associated with a progressive climatic change during the Late Pliocene, directly preceding the Early Pleistocene cooling.
Źródło:: Biuletyn Państwowego Instytutu Geologicznego; 2006, 421; 1--14
0867-6143
Pojawia się w:: Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Secular and catastrophic processes reflected in sediments of the Suchedniów water reservoir, Holy Cross Mountains (Poland)
Autorzy:: Przepióra, Paweł
Kalicki, Tomasz
Aksamit, Michał
Biesaga, Piotr
Frączek, Marcin
Grzeszczyk, Paulina
Malęga, Emanuela
Chrabąszcz, Mariusz
Kłusakiewicz, Edyta
Kusztal, Piotr
Powiązania:: https://bibliotekanauki.pl/articles/94610.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:: sedimentology
lacustrine sediments
fan delta
megaripples
anthropogenic pond
sedymentologia
osady jeziorne
delta
staw antropogeniczny
Opis:: The Suchedniów water reservoir is located in the central section of the River Kamionka in the northern part of the Holy Cross Mountains of central Poland. This area once belonged to the Old Polish Industrial District that, during the Middle Ages, was very intensively developed by iron metallurgy. Many forges and mills along the rivers used water power, which led to the construction of an anthropogenic, small-scale water retention system. At the beginning of the twentieth century many of these reservoirs were drained after the collapse of metallurgical activities. The present-day reservoir was built in 1974 and drained in 2017. Research into the drained basin has documented various forms and sediments, some of which record present-day depositional processes (fire proof clay layer, inland fan delta), while others represent the historical period (lacustrine sediments of older reservoirs). Traces of catastrophic events have been preserved as well; an assemblage of megaripples marks the sudden drainage caused by a dam break in 1974.
Źródło:: Geologos; 2019, 25, 2; 139-152
1426-8981
2080-6574
Pojawia się w:: Geologos
Dostawca treści:: Biblioteka Nauki

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