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Wyszukujesz frazę "assemblages" wg kryterium: Temat


Tytuł:
Stratigraphy and geological structure of the Magura Nappe in the south-western part of the Gorce Mountains, Outer Carpathians, Poland
Autorzy:
Szczęch, Mateusz
Waśkowska, Anna
Powiązania:
https://bibliotekanauki.pl/articles/24201044.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
Late Cretaceous–Early Miocene
stratigraphy
foraminiferal assemblages
tectonics
highresolution DEM
Opis:
The south-western part of the Gorce Mts (Outer Carpathians) is composed of flysch deposits of the Krynica and Bystrica subunits of the Magura Nappe. The Krynica Subunit includes the Late Cretaceous–Paleocene Ropianka Fm, the Early Eocene Beloveža Fm, the Early Eocene–Oligocene Magura Fm and the Oligocene–Early Miocene Malcov Fm, while the Bystrica Subunit includes the Middle Eocene–?Oligocene Magura Fm, represented mainly by the thick-bedded Magura Sandstone. Thin- and medium-bedded sandstone-shale turbidites predominate in the other formations. The lithostratigraphic units are dated on the basis of foraminifers. The studied deposits accumulated in the southern part of the Magura Basin. Their detrital material was derived from a ridge, bounding the basin in the south. In the study area, the Krynica Subunit overthrusts the Bystrica Subunit. The studied deposits are folded, thrust and cut by numerous faults. The Turbacz Thrust Sheet and the newly identified Kudłoń Thrust Sheet were distinguished in the Krynica Subunit. Faults of different lengths and throws are transverse or oblique. Some of them form complex dislocation zones with lengths of up to several km. In general, the high-resolution digital elevation model DEM contributed significantly to progress in the geological and geomorphological research.
Źródło:
Annales Societatis Geologorum Poloniae; 2023, 93, 2; 103--136
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Molluscan assemblages in sediments of a landslide on Majerz Hill near Niedzica (Inner Carpathians, Southern Poland) – phases of development and environmental changes
Autorzy:
Alexandrowicz, Witold Paweł
Powiązania:
https://bibliotekanauki.pl/articles/2055854.pdf
Data publikacji:
2022
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
landslide
molluscan assemblages
environmental changes
Holocene
Podhale Basin
Southern Poland
Opis:
A detailed malacological analysis was made of sediments associated with a small landslide which had developed on the north-eastern slope of Majerz Hill near Niedzica (Inner Carpathians, Southern Poland). The age of the development and environmental changes associated with particular phases of the landslide was determined by means of radiocarbon dating. The analyses made it possible to distinguish two periods of landslide activation falling on the turn of the Early/Middle Holocene and on the Late Holocene (probably on the Iron Age Cold Period). These phases are closely related to periods of increased mass movements, both of landslides and debris flows in other European mountains, stages of glacial advance in the Alps, periods of increased fluvial activity in rivers and elevated water levels in European lakes. The molluscan assemblages also enabled the reconstruction of environmental conditions before the landslide formation, during periods of dormancy, and after the end of its activity.
Źródło:
Geology, Geophysics and Environment; 2022, 48, 1; 51--68
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Natural and anthropogenic changes in the environment during the Holocene at the Kraków region (Southern Poland) from study of mollusc assemblages
Autorzy:
Alexandrowicz, Witold Paweł
Powiązania:
https://bibliotekanauki.pl/articles/2058731.pdf
Data publikacji:
2021
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
mollusc assemblages
environmental changes
anthropogenic pressure
Holocene
Southern Poland
Opis:
Malacological analysis was used to reconstruct Holocene environmental changes from profiles of calcareous tufa and fluvial deposits exposed in the Kobylanka stream valley, several kilometres west of Kraków in southern Poland. The abundant and diversified mollusc fauna was characterized by clear variability within the vertical succession where five types of molluscan assemblages were distinguished. The pattern of sedimentary and molluscan facies allowed characterization of two main intervals of environmental change during Holocene. In the lower interval, until the end of the Middle Holocene, human activity was not detected and environmental processes were controlled by natural factors. In the upper interval, corresponding to the Late Holocene, human impact can be seen, in the form of rapid deforestation and agricultural development. Anthropogenic impact has been particularly evident during the last millennium. The mollusc assemblages studied allowed accurate reconstruction of natural and anthropogenic factors affecting the natural environment.
Źródło:
Geological Quarterly; 2021, 65, 1; 9
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of location of Norway spruce (Picea abies) stumps on their colonisation by insects in the mountains
Autorzy:
Skrzecz, Iwona
Bulka, Maria
Ukalska, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/2044136.pdf
Data publikacji:
2019
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
mountains
altitude
exposure
insect assemblages
Coleoptera
Picea abies stump
Opis:
Tree stumps provide habitat for insect assemblages, which are influenced by various factors. Among these factors, physical and chemical changes of the stumps, fungi developing in the dead wood and stump size are most often reported. However there is limited information about the abundance of insects in stumps that are located on mountains where there are different microclimatic conditions. The studies pointed at the determination whether the location of Picea abies stumps in mountains at different altitudes above sea level and on mountainsides with different sun exposure has an impact on the frequency of insects colonising them. The study was carried out in the Eastern Sudety Mountains situated in south-western Poland. The stumps were in clearcuts located at the altitudes 600–700 m and 900–1000 m above sea level and on southern and northern mountainsides. The insects were collected from 0.05 m2 of bark from each stump and identified to the family, order or species level. The numbers of insects in the stumps were modelled with the use of the Poisson distribution or the negative binomial distribution and the generalised linear models. Picea abies stumps were colonised by insects from 16 families in 3 orders (Coleoptera, Diptera, Hymenoptera) in which the Coleoptera was most frequently represented by the families Cerambycidae, Curculionidae (with the sub-family Scolytinae). In the stumps located at the elevation of 900–1000 m there were 28% more insects than in the stumps at 600–700 m. The stumps located on mountainsides with northern exposure were colonised more abundantly by Cerambycidae. Numbers of Curculionidae in the stumps were affected by altitude. Most Curculionidae were found in the stumps located at the elevation 900–1000 m above sea level. The interaction of altitude and mountainside exposure showed more insects in the stumps at higher altitude, regardless of the mountainside exposure. The results showed that the total number of insects in the stumps was influenced by their location in mountains.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2019, 61, 1; 64-77
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rethinking Polish assemblages of the 1960s: The (re)turn to things
Autorzy:
Błotnicka-Mazur, Elżbieta
Powiązania:
https://bibliotekanauki.pl/articles/1806875.pdf
Data publikacji:
2019-10-23
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II. Towarzystwo Naukowe KUL
Tematy:
polskie asamblaże; zwrot materialny; przedmioty w sztuce; polska sztuka lat 60. XX wieku
Polish assemblages; material turn; objects in art; Polish art of the 1960s
Opis:
Przemyśleć na nowo polskie asamblaże z lat 60. XX wieku: powrót do rzeczy Celem artykułu jest analiza statusu obiektu w praktykach neoawangardowych wybranych polskich artystów w latach 60. XX wieku, z perspektywy „zwrotu materialnego”, zainicjowanego przez kryzys reprezentacji postrukturalizmu w naukach społecznych i humanistycznych. Chęć wyjścia poza tradycyjne dzieło malarskie, pojmowane w kategoriach płaskiej, dwuwymiarowej powierzchni, sprawiła, że artyści zaczęli wprowadzać do sztuki przedmioty z prawdziwego życia, dzięki czemu dzieło zyskiwało nowe życie i „osobowość”. Artykuł koncentruje się na pracach czterech wybitnych polskich artystów neoawangardowych: Erny Rosenstein, Włodzimierza Borowskiego, Tadeusza Kantora i Aliny Szapocznikow. Biorąc pod uwagę różnice między ich postawami artystycznymi i osobistymi doświadczeniami, można zaobserwować wspólne zainteresowanie materialnością świata, które zaowocowało różnorodnymi interpretacjami przedmiotów (Rosenstein, Borowski, Kantor), a także reifikacją ciała (Szapocznikow). Odniesienie do teorii aktora-sieci Latoura tworzy także nową perspektywę dla badań nad rolą obiektów w dziełach sztuki (Kantor).
The article aims to analyse the status of the object in the neo-avantgarde practice of selected Polish artists in 1960s assemblages, from the perspective of the ‘material turn’, initiated by postructuralism’s crisis of representation in the social sciences and humanities. Trespassing on the intellectual ground associated with traditional painting, which was conceived as a flat two-dimensional surface, led the artists to introducing objects from real life into their art, this gave the artwork containing objects new life and ‘personality’. The paper focuses on the works by four prominent modernist Polish artists: Erna Rosenstein, Włodzimierz Borowski, Tadeusz Kantor and Alina Szapocznikow. Taking into account the differences between their artistic attitudes and personal experiences, one may observe a common interest in the materiality of the world that resulted in a variety of object interpretations (Rosenstein, Borowski, Kantor) as well as the reification the body (Szapocznikow). Reference to Latour’s Actor-Network-Theory also creates a new perspective for research on the objects in works of art (Kantor).
Źródło:
Roczniki Humanistyczne; 2018, 66, 4; 131-150
0035-7707
Pojawia się w:
Roczniki Humanistyczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diversity of cyanobacteria and microalgae in hydro-terrestrial habitatsin Svalbard and its ecological evaluation
Autorzy:
Richter, Dorota
Powiązania:
https://bibliotekanauki.pl/articles/2042113.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Svalbard
phycoflora
assemblages
ecological features
trophic status
Źródło:
Polish Polar Research; 2018, 39, 2; 255-311
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Freshwater diatoms of the Ecology Glacier foreland, King George Island, South Shetland Islands
Autorzy:
Kochman-Kędziora, Natalia
Noga, Teresa
Olech, Maria
Van De Vijver, Bart
Powiązania:
https://bibliotekanauki.pl/articles/2042083.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Antarctic
King George Island
Ecology Glacier
diatoms
freshwater assemblages
Źródło:
Polish Polar Research; 2018, 39, 3; 393-412
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Holoceńska ewolucja torfowiska w Zatoce Słupiańskiej (jezioro Wigry, NE Polska) w świetle analizy malakologicznej
Holocene evolution of the peat-bog in Słupiańska Bay (Wigry Lake, NE Poland) in the light of malacological analysis
Autorzy:
Alexandrowicz, W. P.
Żurek, S.
Powiązania:
https://bibliotekanauki.pl/articles/2061609.pdf
Data publikacji:
2018
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
gytia wapienna
zespoły mięczaków
zmiany środowiska
wahania poziomu jezior
holocen
jezioro Wigry
calcareous gyttja
assemblages of molluscs
environmental changes
lake-level fluctuations
Holocene
Wigry lake
Opis:
W profilach wierceń wykonanych na obszarze torfowiska w Zatoce Słupiańskiej rozpoznano trzy typy zespołów mięczaków. Liczne skorupki mięczaków występowały w obrębie serii gytii wapiennych i drobnodetrytusowych o miąższości 5,35 m. Malakofauna była reprezentowana głównie przez ślimaki wodne i małże. Taksony lądowe pojawiały się rzadko, a największe liczebności osiągały w stropowej części analizowanej sekwencji. Wydzielone zespoły mięczaków charakteryzowały odmienne typy siedlisk. Występujący w spągowej części profilu zespół z Gyraulus laevis zawiera liczne taksony zimnolubne i wiekowo odpowiada wczesnemu holocenowi. Młodsza fauna (zespół z Gyraulus albus) cechuje się znacznym udziałem form ciepłolubnych, a jego obecność wskazuje na fazę atlantycką. Zespół z gatunkami lądowymi występuje w stropowej części analizowanego profilu. Zespoły mięczaków reprezentują różne typy środowisk: strefę litoralną jeziora, okresowe zbiorniki wodne oraz podmokłe siedliska lądowe. Zmienność zespołów mięczaków oraz zróżnicowany udział skorupek i wieczek Bithynia tentaculata wskazuje na obecność faz obniżenia poziomu wody w jeziorze Wigry, które przypadają na fazę borealną, środkową część fazy atlantyckiej oraz schyłek fazy subborealnej i fazę atlantycką. Z tym ostatnim okresem wiąże się początek depozycji torfu.
Three types of molluscan assemblages have been identified in a profile of calcareous gyttja and peat penetrated by drilling within the raised peat-bog of the Słupiańska Bay. Numerous shells of molluscs have been identified within the 5.35 m thick intervals of fine detritus of the calcareous gyttja. The shells belonged primarily to the bivalves and water snails. Terrigenous species appeared only rarely and have been more frequent in the upper part of the penetrated interval. The three distinguished molluscan assemblages have been described and interpreted in terms of representing different environmental conditions. Assemblage with Gyraulus laevis that occurs within the lower part of the interval consists of the cold-loving forms representing early Holocene. Assemblage with Gyraulus albus that occurs in the middle part of the interval consists of warm-loving species linked to the Atlantic Phase. Assemblage with terrigenous species, mainly snails, occurs in the upper part of the interval. The distinguished types of molluscan assemblages are composed of species characteristic of littoral habitat of ephemeral lakes and some of terrestrial habitats. Lake-level fluctuations are expressed by changing of molluscan fauna. Variable proportions of Bithynia tentaculata shells and opercula indicates low-level water stages of the Wigry Lake that took place during the Boreal Phase, the middle part of the Atlantic Phase and during the termination of the Sub Boreal and Sub Atlantic phases. The completion of gyttja accumulation and the beginning of peat deposition are associated with the latter period.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2018, 473; 1--12
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prejudices behind Algorithms: Automated Surveillance Systems as Tools of Segregation and Discrimination
Autorzy:
Gurtowski, Maciej
Waszewski, Jan
Powiązania:
https://bibliotekanauki.pl/articles/1985830.pdf
Data publikacji:
2018-12-31
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
Big Data
data doubles
dataveillance
invisible hand
new surveillance
perverse effect
racism
surveillant assemblages
Opis:
The aim of this paper is to describe the emerging phenomenon of new racism brought by the development of automated surveillance tools. We would like to show that this new system of discrimination is a byproduct of some general transformations in the field of social control. For this purpose, we will refer to invisible hand type of explanation, and the concept of perverse effect in particular. We will also relate widely to some cases and concepts from the “new surveillance” and social control literature and we will try to summarize it.
Źródło:
Kultura i Edukacja; 2018, 4(122); 94-109
1230-266X
Pojawia się w:
Kultura i Edukacja
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ekologia polityczna powietrza: o uwidzialnianiu miejskiego ryzyka
The Political Ecology of the Air: Making Urban Risk Visible
Autorzy:
Bojadżijewa, Iwona
Powiązania:
https://bibliotekanauki.pl/articles/1373328.pdf
Data publikacji:
2016-05-23
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
actor-network theory
risk
agency of things
urban conflicts
assemblages
teoria aktora-sieci
ryzyko
sprawczość rzeczy
konflikty miejskie
asamblaże
Opis:
In this text the author attempts to reconstruct contemporary disputes about air quality in Poland using the language of actor-network theory (ANT). The purpose is to show the process of making urban risk visible—in this instance, the risk of polluted air—through the development of hybrid alliances and the formulation of translations aimed at the final elimination of air pollution. The article consists of three parts and a theoretical introduction in which the author discusses the basic tools and concepts of ANT, as well as Latour’s programme of political ecology. In the first part, the author sketches the map of actors and actants involved in air-pollution discussions. Then she examines the role of things—material objects—in air pollution conflicts, with special emphasis on the agency of these non-human actants. Finally, she focuses on alternative translations, which are attempts to negotiate smog’s place in the hierarchy of the collective.
Źródło:
Kultura i Społeczeństwo; 2016, 60, 2; 35-53
2300-195X
Pojawia się w:
Kultura i Społeczeństwo
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Middle Miocene of the Fore-Carpathian Basin (Poland, Ukraine and Moldova)
Autorzy:
Wysocka, A.
Radwański, A.
Górka, M.
Bąbel, M.
Radwańska, U.
Złotnik, M.
Powiązania:
https://bibliotekanauki.pl/articles/138689.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Lithofacies
fossil assemblages
Middle Miocene
Fore-Carpathian Basin
Polska
Ukraine
Litofacje
miocen
zbiornik przedkarpacki
Polska
Ukraina
Opis:
Studies of Miocene sediments in the Fore-Carpathian Basin, conducted by geologists from the University of Warsaw have provided new insights on the distribution of the facies infilling the basin, particularly in the forebulge and back-bulge zones. The origin of the large-scale sand bodies, evaporitic deposits and large-scale organic buildups is discussed, described and verified. These deposits originated in variable, shallow marine settings, differing in their water chemistry and the dynamics of sedimentary processes, and are unique with regard to the fossil assemblages they yield. Many years of taxonomic, biostratigraphic, palaeoecologic and ecotaphonomic investigations have resulted in the identification of the fossil assemblages of these sediments, their age, sedimentary settings and post-mortem conditions. Detailed studies were focused on corals, polychaetes, most classes of molluscs, crustaceans, echinoderms, and fishes.
Źródło:
Acta Geologica Polonica; 2016, 66, 3; 351-401
0001-5709
Pojawia się w:
Acta Geologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Molluscan assemblages in Late Holocene tufa cones in the Pieniny Mountains (southern Poland)
Autorzy:
Alexandrowicz, W. P.
Powiązania:
https://bibliotekanauki.pl/articles/2059741.pdf
Data publikacji:
2014
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
calcareous tufa
molluscan assemblages
historic period
Pieniny Mts.
South Poland
Opis:
Limestone rock walls of various inclination form a favourable substrate for the deposition of calcareous tufas that form cone-shaped structures located at the foot of slopes or fill niches within them. Such carbonate deposits usually contain rich and diversified molluscan assemblages, whose composition and structure closely correspond to the ambient environmental conditions in the immediate vicinity. The study of the Pieniny Mountains area revealed 10 sites with such deposits. The identified malacofouna was subjected to detailed analysis. It enabled identification of three types of faunistic assemblages (Bythinella austriaca assemblage, Pyramidula pusilla assemblage, and a shade-loving species assemblage), which are related to the conditions prevailing during the deposition. Tufa cones found in the Pieniny Mountains represent the historic period (Late Holocene). The deposits provide a record of two climatic phases: warmer and colder. The former (Medieval Warm Period) involved the intensified deposition of carbonate material and the rapid growth of tufa cones. The latter – the Little Ice Age – entailed the slow degradation of cones and slower sedimentation of tufas, while the intensified physical weathering led to the increase in the clast material proportion (sharp-edged limestone fragments). Tufas accumulated in the zone unaffected by high anthropogenic pressure and thus represent a record of natural environmental changes during the historic period
Źródło:
Geological Quarterly; 2014, 58, 2; 269--280
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biegaczowate jako zooindykatory regeneracji drzewostanów sosnowych zaburzonych przez huragan w 2002 roku - wyniki obserwacji z lat 2003-2011
Carabids as bioindicators of regeneration of Scots pine stands disturbed by a hurricane in 2002 - results of observations from 2003-2011
Autorzy:
Skłodowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/993268.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drzewostany pokleskowe
drzewostany sosnowe
drzewostany pohuraganowe
regeneracja
bioindykatory
chrzaszcze
biegaczowate
Carabidae
zgrupowania zwierzat
struktura zgrupowan
struktura gatunkowa
ground beetles
assemblages
species diversity
forest species
mib
Opis:
During the period from 2003 to 2011 observations of carabid community regression and selected habitat indicators were conducted on 15 plots in stands that had been disturbed by a hurricane and on 15 plots in control stands. Regression of carabid communities delayed 3−4 years was observed, consisting in increases in the number of species and the proportion of xerophilous species and reductions in the percentage of forest fauna and in mean individual biomass. Only after 7 years did these indicators begin to show a tendency in the reverse direction, albeit not very strong, indicating that carabid communities had begun to regenerate.
Źródło:
Sylwan; 2013, 157, 05; 376-384
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Late Glacial and Holocene molluscan assemblages in deposits filling palaeolakes in northern Poland
Autorzy:
Alexandrowicz, W.P.
Powiązania:
https://bibliotekanauki.pl/articles/2027032.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
lacustrine chalk
calcareous gyttja
palaeolakes
molluscan assemblages
Late Glacial
Holocene
northern
Po land
Opis:
Late Gla cial and Ho lo cene car bon ate lac us trine de pos its de vel oped as lac us trine chalk and cal car e ous gyttja are fairly wide spread across north ern Po land. They form fill ings of palaeolakes which de vel oped dur ing the deglaciation. These for ma tions are usu ally cov ered by peat. Rich and di ver si fied malacofauna has been found in the afore men tioned sed i -ments. The pro files from 154 sites de scribed and pub lished by var i ous au thors were sub jected to malacological anal y -sis. In the whole ma te rial, 18 mol lus can as sem blages were dis tin guished, rep re sent ing three types of hab i tats: terrestrial,of tem po rary wa ter bod ies, and of per ma nent wa ter bod ies. The com po si tion and struc ture of these as sem blages al lows char ac ter iz ing cli mate and dif fer en ti at ing hab i tats. The time-se quences of malacological as sem blages pro videdpos si bil ity to de fine three types of malacological se quences. On the ba sis of these suc ces sions, a scheme of the lakewa ter bod ies evo lu tion dur ing Late Gla cial and in north ern Po land was elab o rated.
Źródło:
Studia Quaternaria; 2013, 30; 5-17
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Possibilities and restrictions of heavy-mineral analysis for the reconstruction of sedimentary environments and source areas
Autorzy:
Derkachev, A.N.
Nikolaeva, N. A.
Powiązania:
https://bibliotekanauki.pl/articles/94357.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
heavy-mineral assemblages
sedimentary environments
ODP cores
Mesozoic folded belts
złoża ciężkich minerałów
środowiska sedymentacyjne
Opis:
The possible reconstruction of ancient sedimentary environments on the basis of heavy-minerals assemblages is presented by means of discriminant lithogeodynamic diagrams that compare modern and ancient sedimentary environments. This is exemplified by Mesozoic-Cenozoic deposits recovered from ODP cores obtained from the Philippine and Japan Seas, the Japan Trench and the North Atlantic, as well as by deposits from folded areas onshore. On the basis of the comparative analysis, it can be deduced that the main tendencies in mineral assemblages of modern deposits that depend on the structural-tectonic conditions, are fairly well preserved in Cenozoic deposits (including the deposits recovered by ODP drilling). On the other hand, the environmental reconstruction of folded and faulted pre-Cenozoic continental areas on the basis of their heavy-mineral assemblages, by comparing them with supposed modern analogs, is not always possible with much certainty. The main reasons may be either a considerable change in the composition of the initial (primary) mineral assemblages as a result of intralayer solution or the absence, at the time of deposition, of geodynamic environments that closely resembled modern ones.
Źródło:
Geologos; 2013, 19, No. 1-2; 147-158
1426-8981
2080-6574
Pojawia się w:
Geologos
Dostawca treści:
Biblioteka Nauki
Artykuł

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