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Tytuł:
The Cyclops Mountains Massif (New Guinea, Indonesia) as the provenance area for metal-bearing shelf sediments from the Carolinian Sea
Autorzy:
Zglinicki, Karol
Szamałek, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/2059672.pdf
Data publikacji:
2020
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
continental shelf sediments
Cyclops Mountains
New Guinea
heavy minerals
geological prospection
marine minerals
Opis:
In 2009, on the initiative of PT Halmahera Perkasa the “Jayapura” exploration project was carried out in Indonesia. As part of this project, exploration of the sea bottom in the northern coast of New Guinea was carried out over a distance of ~45 km. The suction dredge collected 59 samples of loose sediments from the shelf bottom surface of the Carolinian Sea (to a depth of 60 m below the sea-floor). The extracted samples are usually poorly and moderately sorted sands (5 samples), medium-grained sands (21 samples), and fine-grained sands (33 samples). The sand composition shows, among others, a wide spectrum of heavy minerals of ultra-mafic (Cr-garnet, chromium spinel, Mg-olivine) and metamorphic (epidote, clinochlore, amphibole, titanite) origin. The content of heavy minerals in the sediments is up to 54.77 wt.%. It was found that the source of heavy fraction in the eastern and western parts of the coast is the rock of the ophiolite series building the Cyclops Mountains Massif. The mineral composition of sediments from the central coastal zone corresponds to the types of rocks building the metamorphic core of the Cyclops Mountains (amphibolite, gneisses, andesite). Three mineral-geochemical subprovinces were determined on the basis of analyses of heavy mineral decomposition and chemical analyses of sediments. Shelf sediment from the eastern part of the coast is characterized by an increased content of strategic metals (Ni up to 3560, W up to 3130 and Co up to 142 ppm). In the central zone, the V content increases up to 244 ppm and the Ag content up to 5 ppm. In the shelf sediments there is a strong depletion in the REE.
Źródło:
Geological Quarterly; 2020, 64, 2; 480--491
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badanie wpływu zawartości minerałów ciężkich na naturalną promieniotwórczość skał miocenu zapadliska przedkarpackiego
Study on the impact of heavy minerals to natural radioactivity of the Miocene rocks in the Carpathian Foredeep
Autorzy:
Zagórska, Urszula
Sikora, Aleksandra
Łykowska, Grażyna
Powiązania:
https://bibliotekanauki.pl/articles/1834988.pdf
Data publikacji:
2019
Wydawca:
Instytut Nafty i Gazu - Państwowy Instytut Badawczy
Tematy:
minerały ciężkie
spektrometria gamma
promieniotwórczość naturalna
separacja frakcji ciężkiej
mułowce
skały miocenu
zapadliska przedkarpackie
heavy minerals
gamma spectrometry
natural radioactivity
heavy fraction separation
mudstones
Miocene rocks
Carpathian Foredeep
Opis:
W skałach miocenu zapadliska przedkarpackiego zauważono zjawisko zawyżania pomiarów promieniotwórczości naturalnej rejestrowanych w otworze wiertniczym dla mułowców. To zjawisko powoduje problemy w rozróżnianiu na podstawie profilowania naturalnej promieniotwórczości tych skał od iłowców, które charakteryzują się gorszymi parametrami petrofizycznymi. W niniejszej pracy badano kolejne możliwe źródło podwyższonej radioaktywności skał mułowcowych, to jest zawartość minerałów ciężkich, które wykazują tendencję do gromadzenia pierwiastków promieniotwórczych – uranu i toru. Minerały ciężkie, należące do grupy minerałów akcesorycznych, takie jak cyrkon, apatyt, monacyt, rutyl, granat i tytanit, charakteryzują się podwyższoną promieniotwórczością ze względu na podstawienia w sieci krystalicznej U i Th. Na testowych próbkach wykonano pomiar naturalnej promieniotwórczości metodą spektrometrii gamma, przy wykorzystaniu aparatu RT-50 firmy Georadis. Następnie z próbek skał wydzielono minerały ciężkie, przy użyciu cieczy ciężkiej, uprzednio rozdzielając próbki na frakcje ziarnowe, w celu ułatwienia separacji frakcji ciężkiej. Poszczególne frakcje ziarnowe pozbawione minerałów ciężkich złączono z powrotem i wykonano ponowny pomiar zawartości uranu, toru i potasu. Wykonano także obserwacje mikroskopowe w celu jakościowej analizy składu mineralogicznego wydzielonej frakcji ciężkiej. W badanych próbkach zidentyfikowano między innymi ziarna cyrkonu, turmalinu, granatu, rutylu, apatytu, chlorytu czy tytanitu. Przeprowadzone wyniki pomiarów naturalnej promieniotwórczości, przed i po wydzieleniu minerałów ciężkich, nie dają jednoznacznej odpowiedzi na postawiony problem zawyżonych wskazań sondy gamma. Konieczne jest zwiększenie ilości analizowanych próbek. Zaobserwowano trend spadku ilości U i Th w próbkach, z których wydzielono frakcję ciężką. Jednak zmiany promieniotwórczości są na tyle niewielkie, że nie pozwalają na wyciągnięcie ostatecznych wniosków. Dodatkowe analizy są potrzebne, aby ocenić wpływ pozostałych źródeł uranu i toru w badanych skałach, takie jak zawartość materii organicznej czy udział toru we frakcji ilastej.
In the Miocene rocks of the Carpathian Foredeep, the occurrence of overestimating the measurements of natural radioactivity logs for mudstones was noticed. This phenomenon causes problems with recognition on the basis of natural radioactivity profiling of these rocks from claystones, characterized by inferior petrophysical parameters. In this study, another possible source of increased radioactivity of mudstone rocks, i.e. the content of heavy minerals that tend to accumulate radioactive elements - uranium and thorium - was investigated. Heavy minerals, belonging to the accessory minerals, such as zircon, apatite, monazite, rutile, garnet and titanite, are characterized by increased radioactivity due to substitutions of U and Th in the crystal lattice. Natural radioactivity of the test samples was measured using the gamma spectrometry method with the RT-50 device from the Georadis company. The heavy minerals were then removed from the rock samples using a heavy liquid, previously separating the samples into grain fractions to facilitate the separation of the heavy fraction. The individual grain fractions deprived of heavy minerals were put back together and the uranium, thorium (and potassium) content was remeasured. Microscopic observations were also made to qualitatively analyze the mineralogical structure of the separated heavy fraction. In the tested samples, among others: zircon, tourmaline, garnet, rutile, apatite, chlorite or titanite grains were identified. The results of the measurements of natural radioactivity, before and after the separation of heavy minerals, do not give a clear answer to the problem of excessive indications of the gamma logs. It is necessary to increase the number of analyzed samples. The trend of decreasing amounts of U and Th in the samples from which the heavy fraction was isolated was observed. However, changes in radioactivity are so small that they do not allow to draw final conclusions. Additional analyzes are needed to assess the impact of other sources of uranium and thorium in analyzed rocks, such as the content of organic matter or Th content in clays.
Źródło:
Nafta-Gaz; 2019, 75, 2; 77-82
0867-8871
Pojawia się w:
Nafta-Gaz
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heavy and light minerals as a tool for reconstructing depositional environments: an example from the Jałówka site (northern Podlasie region, NE Poland)
Autorzy:
Woronko, Barbara
Rychel, Joanna
Karasiewicz, Mirosław T.
Ber, Andrzej
Krzywicki, Tomasz
Marks, Leszek
Pochocka-Szwarc, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/94625.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
heavy minerals
quartz grain
periglacial processes
source deposits
Vistulian glaciation
NE Poland
minerały ciężkie
ziarna kwarcu
procesy peryglacjalne
złoża źródłowe
zlodowacenie Wisły
Polska północna
Opis:
Part of northern Podlasie (NE Poland), shaped during the Wartanian stadial of the Odranian glaciation (Saalian), was situated in the periglacial zone during the Vistulian (Weichselian) glaciation. Both landforms and sediments were affected by the periglacial conditions. This is recorded at the Jałówka site, at the floor of a dry valley, where mineral deposits of 4.13 m thick, overlying organic deposits from the Eemian interglacial, were examined. These mineral deposits form four units, from bottom to top: a fluvial unit (I), a loess-like unit (II), a solifluction unit (III), and an aeolian unit with ice wedges (IV) on top of unit III. The heavy and light minerals were analysed, as well as the geochemistry, in order to find out about the parent material and to reconstruct the climatic conditions during deposition. The mineral analysis indicates that the Saalian till was predominantly derived from shallow-marine deposits; erosion accompanied by sorting of the heavy minerals took place on the basis of their mass and grain size. The original material of the till seems therefore to be sedimentary rocks from the eastern Central Baltic Basin. This material became strongly weathered under the periglacial conditions, resulting in the destruction of the quartz grains, as well as in leaching, leading to complete decalcification of the deposits. Aeolian activity resulted in infilling of ice wedges and the creation of thin layers. The intensity and the duration of these processes was limited, so that the effects of the aeolian abrasion are insignificant. Neither resulted the aeolian activity in significant reshaping of the landscape.
Źródło:
Geologos; 2013, 19, No. 1-2; 47-66
1426-8981
2080-6574
Pojawia się w:
Geologos
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The sedimentary environment of Devonian siliciclastics in the Babí lom locality (Brunovistulian Platform cover, Southern Moravia, Czech Republic)
Autorzy:
Wojewoda, J.
Nehyba, S.
Gilíkova, H.
Burianek, D
Powiązania:
https://bibliotekanauki.pl/articles/2059824.pdf
Data publikacji:
2015
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
southern Moravia
Brno Massif
Devonian siliciclastics
facies analysis
heavy minerals
alluvial fan
braided river
meandering river
palaeotransport
Opis:
Sandstones and conglomerates, which northwards of Brno agglomeration build a hill (ridge) named Babí lom are strongly diagenezed (anchi-metamorphozed) and tectonically deformed. Their regional distribution and stratigraphic position between the Cambrian(?) clastics and Upper Devonian limestones, as well as their appearance meant that they age is considering as Middle Devonian. They are distinguished as the so-called „Basal Devonian Clastics“. Almost all primary sedimentary features are well preserved and distinct. In the metasediments of the Babí lom hill were distinguished both the facies and structures typical of alluvial fans and rivers. Among others they are channel lags with imbricated grains, cross beddings and debrites. Within sedimentary association was established the way-up direction what clearly evidences a coarsening upwards sequence. Assuming the lack of rotation of series of sediments in the X-Y plane, the palaeotrasport was toward the north while major supply with material was from the east.
Źródło:
Geological Quarterly; 2015, 59, 1; 229--238
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geologiczno-geofizyczna ocena perspektyw złożowych pierwotnych i wietrzeniowych minerałów tytanowych w rejonie ofiolitowego masywu Ślęży w Sudetach (SW Polska)
Geologic and geophysical estimation of the prospect for ore deposit of the occurrences of primary and placer titanium minerals in the Ślęża Massif ophiolite, area, the Sudetes Mts (SW Poland)
Autorzy:
Wiszniewska, J.
Petecki, Z.
Powiązania:
https://bibliotekanauki.pl/articles/2075531.pdf
Data publikacji:
2016
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
masyw Ślęży
minerały ciężkie
złoża rud tytanu
anomalia magnetyczna
anomalia grawimetryczna
Ophiolite Ślęża Massif
placer heavy minerals
titanium ore deposits
magnetic anomaly
gravimetric anomaly
Opis:
Miocene aged heavy mineral (HMin) alluvial cones and regolith sands above ore-bearing gabbro and amphibolite/diabase rock zone were considered as a prospective metallotect in the area of Devonian ophiolite Ślęża Massif in the Sudets (SW Poland). The available research data from the Sobótka region indicated that the ultramafic gabbro intrusion has an interesting titanium ore enrichment with minerals such as ilmenite and titanomagnetite in the Strzegomiany-Kunów primary ultramafic rocks. The mean composition of ore gabbro samples taken from the surface contained eg; Fe -14.21%, TiO2 - 4.92%, V2O5 - 0,15. Conducted geophysical surveys in the vicinity of the presumed gabbroic rocks at thin Quaternary sediments cover, suggested the variable content ofa primary mineralization, which could be related to the increased content of heavy minerals fractions over the bed in the form of regolith or as a secondary deposit. Titanium minerals such as ilmenite, sphene, were enriched during the oxidation process and created secondary bed, where the concentrates of titanium oxides: rutile, leucoxene or oxidized ilmenite may have a high titanium content as high as 70-90%. Placer HMin sands are at present a major source of titanium deposits worldwide and the largest industrial value due to their large resources, simplicity and purity of exploitation and the ability to yield concentrates of HMin: ilmenite, rutile, pseudobrookite, anatase and leucoxene, sometimes in the company of valuable zircon, monazite or garnet. These deposits in the world are mainly used in metallurgical and chemical industries, eg; the production ofpaints and pigments used in the pharmacy, paper and paint industry. Similar observations have been reported from the region of Spain, Portugal, western Australia andfrom the south of India. Preliminary results of presented study indicate that the Strzegomiany-Kunów region can be considered as prospective not only because of the presence ofprimary titanium mineralization in gabbro, especially in diallage gabbro, amphibolite (diabase) and serpentinite, but also a presence of enriched titanium mineralization in regolith over gabbro and in clastic sediments on the foreland of Ślęża Massif.
Źródło:
Przegląd Geologiczny; 2016, 64, 9; 650--656
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heavy minerals as a tool to reconstruct river activity during the Weichselian glaciation (Toruń Basin, Poland)
Autorzy:
Weckwerth, Piotr
Chabowski, Marek
Powiązania:
https://bibliotekanauki.pl/articles/94678.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
heavy minerals
ice-marginal valley
river-discharge regime
channel-pattern transformation
Toruń Basin
Weichselian
ciężkie minerały
pradolina
dorzecze Torunia
zlodowacenie północnopolskie
Opis:
The heavy-mineral composition of the Weichselian fluvial successions deposited by an ephemeral meandering river and by a sand-bed braided river in the Toruń Basin (central Poland) was analysed. On the basis of a lithofacies analysis, in combination with the composition of the heavy-mineral assemblages, the fluvial processes and river-channel morphology were reconstructed. This allows determining the provenance of the fluvial deposits and the rivers’ discharge regimes. A model is proposed which can explain the changes in the amount of individual minerals in the fluvial sediments of different ages under the conditions of the oscillating Scandinavian ice sheet. The model assumes that, during the ice-sheet advances, the proglacial streams supplied large amounts of heavy minerals that were less resistant to mechanical abrasion. During the main phase of the ice-sheet retreat, the distance between the ice sheet and the Toruń Basin increased, and the amount of non-resistant minerals diminished as a result of sediment reworking in proglacial rivers. Due to the unique location of the Toruń Basin at the front of the Scandinavian ice sheet during the Weichselian glaciation, the heavy-mineral assemblages in the fluvial deposits form a valuable tool for the recognition of the ice-sheet extent.
Źródło:
Geologos; 2013, 19, No. 1-2; 25-46
1426-8981
2080-6574
Pojawia się w:
Geologos
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selective agglutination of tourmaline grains by foraminifera in deep-water flysch environment (Eocene Hieroglyphic beds, Silesian Nappe, Polish Outer Carpathians)
Autorzy:
Waśkowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/2059729.pdf
Data publikacji:
2014
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
heavy minerals
tourmaline
agglutinated foraminifera
deep-marine flysch environment
Outer Carpathians
Opis:
Detrital fragments of automorphic tourmaline crystals are commonly incorporated in tests of simple agglutinated foraminifera that lived in the deep-marine Carpathian turbidite basin, in which deposition of the Hieroglyphic beds (Eocene) took place. Such grains were observed in the tests of 37 taxa representing 20 species. However tourmaline occurs in the Carpathian Flysch sediments as an accessory mineral, still it was selected by the foraminifera as the only heavy mineral to be incorporated in their tests. The proportion of tourmaline-bearing specimens in an assemblage usually amounts to a few percent, but may reach 29% in extreme cases. The particular preference for tourmaline segregation and incorporation in the test walls is shown by the following genera: Psammosiphonella, Reophax, Bathysiphon and Nothia.
Źródło:
Geological Quarterly; 2014, 58, 2; 337--352
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Osady złotonośne doliny potoku Kraszówka (Pogórze Kaczawskie)
Gold-bearing deposits of the Kraszówka Stream (Kaczawskie Foothills)
Autorzy:
Urbański, P.
Powiązania:
https://bibliotekanauki.pl/articles/2063135.pdf
Data publikacji:
2010
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
złoto okruchowe
minerały ciężkie
osady aluwialne
skały macierzyste
Sudety Zachodnie
placer gold
heavy minerals
alluvial deposits
parental rocks
Western Sudetes
Polska
Opis:
Analiza petrograficzna i mineralogiczna 25 panwiowych próbek korytowych umożliwiła rozpoznanie złotonośności holoceńskich aluwiów potoku Kraszówka na Pogórzu Kaczawskim. Wystąpienia złota okruchowego odnotowano w 18 próbkach pobranych na całej długości potoku, jednak jego największe nagromadzenie stwierdzono w środkowym odcinku potoku. Większość znalezionych złocin ma formę blaszkowo-płytkową lub cementacyjno-grudkową i wykazuje różnorodne deformacje mechaniczne. Głównym Źródłem złota okruchowego w osadach korytowych potoku Kraszówka są najprawdopodobniej paleogeńskie „białe” żwiry kwarcowe oraz wodnolodowcowe piaski złotonośne związane ze zlodowaceniami południowopolskimi. Ważną rolę w genezie złota okruchowego odegrały procesy chemicznego rozpuszczania i wtórnej precypitacji złota, prowadzące do powstawania tzw. złota „nowego”. W świetle teorii o odnawialności rozsypisk złotonośnych, istnieją duże szanse na rozpoznanie w osadach aluwialnych doliny Kraszówki stref o bilansowej zawartości złota okruchowego.
Samples from alluvia of the Kraszówka Stream (Kaczawskie Foothills) were subjected to petrographic analysis. After this research, gold-bearing deposits of the Holocene Kraszówka alluvia have been diagnosed. Gold occurrence was reported all along the Kraszówka Stream, but its large concentration has been localized by the author within the middle part of the stream. Gold has been identified within 18 of 25 samples collected. Most of gold grains take the foliate-plate and cementation-popular forms and show various types of mechanical deformation. Palaeogene “white” quartz gravels and gold-bearing glaciofluvial sands of the South Polish Glaciations are probably the main source of placer gold. Chemical processes of gold dissolving and reprecipitation took an important part in the origin of placer gold, leading to the formation of so-called “new” gold. In the light of gold-placer renewable theory, there is a good chance to identify zones of economic placer gold concentration in alluvia of the Kraszówka Valley.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2010, 439 (2); 375--388
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Texture and petrography of glacial deposits in the northern foothill of the Hruby Jesenik and Rychlebske Mts., Czechia
Autorzy:
Sikorova, J.
Višek, J.
Nyvlt, D.
Powiązania:
https://bibliotekanauki.pl/articles/2059228.pdf
Data publikacji:
2006
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
northern Moravia
clast shape
provenance
glaciofluvial sediment
heavy minerals
Opis:
The petrographic and mineralogical characteristics of glacial deposits from the localities in the northern foothills of the Hruby Jesenik and Rychlebske Mts. have been studied. Grain-size, petrographic composition, heavy minerals, clast shape and roundness have been investigated. The data obtained have been used to create a probability model to differentiate the stratigraphy of particular accumulations and for partial reconstruction of the advance direction of the ice sheet in the area. The main advance direction of the ice sheet was presumed to be from the NW to SE in this region. The erratic material was probably predominantly transported in the basal ice layers according to the clast shape and roundness. An Elsterian age of the sedimentary bodies investigated is suggested by correlation with analogous deposits in adjacent parts of Poland. This model contradicts previous correlations. However, further constraints on the stratigraphic position of these deposits would require the application of dating techniques.
Źródło:
Geological Quarterly; 2006, 50, 3; 345-352
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conventional and high-resolution heavy mineral analyses applied to flysch deposits : comparative provenance studies of the Ropianka (Upper Cretaceous–Paleocene) and Menilite (Oligocene) formations (Skole Nappe, Polish Carpathians)
Autorzy:
Salata, D.
Uchman, A.
Powiązania:
https://bibliotekanauki.pl/articles/2060326.pdf
Data publikacji:
2013
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
heavy minerals
high-resolution
correlation
sedimentary provenance
flysch
Outer Carpathians
Skole Nappe
Opis:
Conventional and high-resolution analyses of heavy minerals from the gravity flow-deposited sandstones of the Campanian–Maastrichtian interval of the Ropianka (Upper Cretaceous–Paleocene) and Menilite (Oligocene) formations of the Polish Carpathians display similar compositions in terms of mineral species. Zircon, tourmaline, rutile, garnet, staurolite and kyanite belong to the main constituents in both formations. Apatite is common in the Ropianka Fm., while the Menilite Fm. almost lacks this mineral. Furthermore, individual hornblende grains were found in the Ropianka Fm., while andalusite is present only in the Menilite Fm. The Ropianka Fm. is relatively richer in zircon, tourmaline, garnet and apatite, while the Menilite Fm. contains more staurolite and kyanite. Zircon and tourmaline colour and morphological varieties are similar in both formations. The similarities of the heavy mineral assemblages studied suggest origin of these minerals from lithologically similar rocks. Negative correlations between the zircon + tourmaline + rutile (ZTR) values and the content of garnet and staurolite in the Ropianka Fm. may indicate, to a large extent, first-cycle delivery of garnet and staurolite to the formation. Negative, but low, correlation valid only for ZTR and garnet and positive correlations for ZTR and staurolite and kyanite in the Menilite Fm. suggest delivery of these minerals from sedimentary rocks or/and palimpsest sediments. The data obtained on mineral relationships and their morphology suggest mixed first-cycle and recycled provenance of the heavy minerals studied. Additionally, the first-cycle material input seems to be larger during the Ropianka Fm. sedimentation, while during the deposition of Menilite Fm. the contribution of material delivered from erosion of recycled sediments appears more prominent. The heavy mineral evidence suggests a change at the northern margin of the Skole Basin from an immature passive margin with a high relief during sedimentation of the Campanian–Maastrichtian part of the Ropianka Fm. to a mature passive margin with a low relief during sedimentation of the Menilite Fm.
Źródło:
Geological Quarterly; 2013, 57, 4; 649--664
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Detrital garnets from the Upper Cretaceous-Palaeocene sandstones of the Polish part of the Magura Nappe and the Pieniny Klippen Belt: chemical constraints
Detrytyczne granaty z górnokredowo-paleoceńskich piaskowców polskiej części płaszczowiny magurskiej i pienińskiego pasa skałkowego: wnioski uzyskane na podstawie ich składu chemicznego
Autorzy:
Salata, D.
Powiązania:
https://bibliotekanauki.pl/articles/191641.pdf
Data publikacji:
2004
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
heavy minerals
garnets
source rocks
Magura Nappe
Polish Carpathians
Opis:
Heavy mineral assemblages of the Upper Cretaceous-Palaeocene sandstones of the Polish part of the Magura Nappe and the Pieniny Klippen Belt (PKB) were studied. They consist mainly of stable minerals, such as zircon, tourmaline and rutile, but in many assemblages significant amounts of garnets are also present. To describe the provenance of the main heavy mineral groups their chemical composition was analysed. This article deals with the garnets group. Heavy minerals, including garnets, were derived to the Magura Basin from two opposite source areas: the north-west (northern) and the south-east. In the chemical composition of the analysed garnets, FeO and the almandine molecule are definitely dominant, but garnets with a raised MgO and pyrope molecule content were also found. Proportions among the main elements occurring in garnets indicate that they were formed under low- to medium grade metamorphic conditions in the southeastern source area, and medium- to high-grade conditions in the northern one.
Źródło:
Annales Societatis Geologorum Poloniae; 2004, 74, No 3; 351-364
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heavy minerals as detritus provenance indicators for the Jurassic pre-Callovian palaeokarst infill from the Czatkowice Quarry (Kraków–Wieluń Upland, Poland)
Autorzy:
Salata, D.
Powiązania:
https://bibliotekanauki.pl/articles/2060576.pdf
Data publikacji:
2013
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
heavy minerals
paleokarst
Lower Jurassic
source rocks
Czatkowice
Kraków-Wieluń Upland
Opis:
Heavy mineral assemblages from the infill of Jurassic pre-Callovian palaeokarst in the Czatkowice Quarry, in the Kraków–Wieluń Upland, are zircon dominated. They contain also garnet, tourmaline, rutile and scarce grains of kyanite, staurolite and single chromian spinel. The textural features of the heavy minerals suggest that certain types of source rocks supplied the clastic material infilling in the karst studied. Most of the heavy minerals were derived from sedimentary or metasedimentary rocks as suggested by the high degree of roundness of the grains and also by high ZTR (zircon–tourmaline–rutile) index values. Rounded minerals may derive from Carboniferous, Permian and Triassic clastic rocks occurring in the area surrounding the Czatkowice Quarry. The chemical compositions of rounded detrital garnet and tourmaline grains suggest metamorphic and igneous rocks as initial sources, perhaps located in the Bohemian Massif. However, a hypothetical landmass located south of the Kraków–Wieluń Upland might have been an additional source area. The euhedral zircon and garnet grains were transported directly from crystalline rocks, which may have been Carboniferous-Permian volcanic rocks and crystalline basement elevations of Brunovistulicum exposed during Jurassic pre-Callovian sedimentation in the Czatkowice area.
Źródło:
Geological Quarterly; 2013, 57, 3; 537--550
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heavy minerals from Oligocene sandstones of the Menilite Formation of the Skole Nappe, SE Poland : a tool for provenance specification
Autorzy:
Salata, D.
Uchman, A.
Powiązania:
https://bibliotekanauki.pl/articles/2060508.pdf
Data publikacji:
2012
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
heavy minerals
provenance
Lower Oligocene
Menilite Formation
Skole Nappe
Opis:
Heavy minerals from sandstones belonging mostly to the Boryslav Sandstone and Kliva Sandstone members of the lower part of the Menilite Formation (Oligocene) in the northern part of the Skole Nappe, Polish Carpathians are characterized. In the study area, the sediments were deposited in the Rzeszów and Łańcut channel zones running from the northern margin of the basin. The most frequent heavy minerals in the sandstones examined include zircon, tourmaline, rutile, staurolite, kyanite and garnet. Single grains of andalusite, sillimanite, apatite, epidote, brookite and chrome spinel occur in some samples. The very small content of apatite is related to long, continental weathering in the source area, which is referred to the Paleozoic sedimentary cover of the Małopolska Block and the easternmost part of the Upper Silesian Block. Different preservation states, morphology, degree of roundness and colour varieties suggest that the heavy minerals studied derive from various petrographic types including metamorphic, igneous and sedimentary rocks. However, the Carboniferous and Permian conglomerates and sandstones seem to be the most probable source rocks.
Źródło:
Geological Quarterly; 2012, 56, 4; 803--820
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Forms of heavy metals (Zn, Pb, Cd) occuring in rhizospheres from the areas of former and contemporary Zn-Pb ore mining
Autorzy:
Rożek, D.
Nadłonek, W.
Cabała, J.
Powiązania:
https://bibliotekanauki.pl/articles/88903.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii. Instytut Górnictwa
Tematy:
heavy metals
rhizosphere
Zn-Pb secondary minerals
Olkusz Zn-Pb mining region
historical mining
Opis:
The research areas were selected in the regions heavily polluted by wastes from the former washing plant, flotation waste dump and by non-sulphide Zn-Pb ores from open pit mining in the Olkusz region. The submicroscopic phases occurring in the surface of plant roots and in the rhizospheres were investigated by XRD and SEM/EDS methods. Morphology of submicroscopic metalliferous phases and their manner of occurrence were the subject of study. The analysis of EDS spectra enabled to identify phases and mineral aggregates including Zn, Pb, Fe, Mn, Cd in their structure. The soils from the washing plant and areas of open pit exploitation are contaminated by diverse complexes of minerals. The occurrence of unstable Fe, Pb, Ca sulphates indicate that these wastes are still intensively geochemically active.
Źródło:
Mining Science; 2015, 22, Special Issue 2; 125-138
2300-9586
2353-5423
Pojawia się w:
Mining Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Węglanowość, obtoczenie ziaren i minerały ciężkie w formacjach paleogenu i neogenu środkowozachodniej Polski
Carbonate content, grain roundness and heavy minerals in Paleogene and Neogene formations of Middle West Poland
Autorzy:
Romanek, A.
Powiązania:
https://bibliotekanauki.pl/articles/2062795.pdf
Data publikacji:
2010
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
węglanowość
obtoczenie ziaren
minerały ciężkie
litostratygrafia
paleogen
neogen
środkowozachodnia Polska
carbonate content
grain roundness
heavy minerals
lithostratigraphy
Paleogene
Neogene
Middle West Poland
Opis:
W 40 próbkach pochodzących z czterech formacji paleogeńskich (oligocen) i czterech formacji neogeńskich (miocen) zbadano standardowymi badaniami litopetrograficznymi węglanowość, obtoczenie materiału ziarnistego i skład minerałów ciężkich. Cechy te dobrze charakteryzują analizowane osady i mogą służyć do określania ich pozycji litostratygraficznej. Ma to szczególne znaczenie w badaniach stratygraficznych krótkich odcinków rdzeni wiertniczych, które są głównym materiałem badawczym analizowanych osadów na Niżu Polskim. Formacje morskie oligocenu charakteryzuje podwyższona węglanowość i średnie obtoczenie materiału ziarnistego. Formacje te różnicuje skład minerałów ciężkich. Formacje lądowe oligocenu i miocenu odznaczają się niską węglanowością, na ogół złym stopniem obtoczenia ziaren i znaczną wewnętrzną odmiennością składu i udziału minerałów ciężkich.
The most indicative qualities of four Paleogene formations (Oligocene) and four Neogene formations (Miocene), 40 samples of which have been the subject of the standard lithopetrographic analysis, prove to be carbonate content, grain roundness and composition of heavy minerals. Consequently, on the basis of these features, the lithostratigraphic position of the sediments may be determined, which is of high importance for stratigraphic examinations of short drill core intervals remaining the main research material of the analyzed deposits of the Polish Lowland. Oligocene marine formations are characterized by high carbonate content, medium grain roundness and varying composition of heavy minerals. As far as Oligocene and Miocene continental formations are concerned, low carbonate content and generally angular grains as well as significant differences in the heavy minerals’ composition and percentage may be observed.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2010, 438; 123--135
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 38

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