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Wstępna charakterystyka pierwiastków ziem rzadkich i innych pierwiastków śladowych w osadach drobnoziarnistych z pogranicza triasu i jury w dawnej bruździe śródpolskiej

Brański P.

Biuletyn Państwowego Instytutu Geologicznego

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2018

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nr 472

255--270

PL

Skały drobnoklastyczne z pogranicza triasu i jury (retyk–hetang), nagromadzone w dawnej bruździe śródpolskiej były przedmiotem badań geochemicznych w Państwowym Instytucie Geologicznym – Państwowym Instytucie Badawczym w Warszawie. 94 próbki iłowców i mułowców, pochodzące z sześciu archiwalnych rdzeni wiertniczych, przeanalizowano metodami ICP-MS i XRF, na zawartość pierwiastków ziem rzadkich (REE) i innych pierwiastków śladowych. Wyniki wskazują, że źródłem większości badanych mułowców i iłowców były skały osadowe górnej skorupy kontynentalnej starych obszarów kratonicznych, których protolit miał charakter umiarkowanie felzytowy. Procesy wietrzenia i recyklingu zmodyfikowały, do pewnego stopnia, pierwotny skład chemiczny. Jednak w retyku i wczesnym hetangu, w południowo-wschodnim segmencie bruzdy, niektóre dane geochemiczne sugerują większą dostawę z wulkanicznego protolitu o charakterze maficznym. Ponadto, w kilku próbkach zaobserwowano wyraźne wzbogacenie w pierwiastki ziem rzadkich, w wyniku domieszki minerałów akcesorycznych, będących głównymi nośnikami REE. Tym niemniej, na podstawie obecnie otrzymanych wyników, koncentracje REE (i innych pierwiastków śladowych) w bruździe śródpolskiej są niskie i mają one naukowe znaczenie wskaźnikowe, natomiast nie mają znaczenia surowcowego.

EN

Fine-grained siliciclastic rocks from the Triassic-Jurassic transition (Rhaetian–Hettangian) in the former Mid-Polish Trough were the subject of the geochemical study at the Polish Geological Institute – National Research Institute in Warsaw. Ninety-four samples of claystones and mudstones from six archived drill cores were analysed by ICP-MS and XRF for rare earth elements (REE) and other trace elements. The results indicate that the sources of most of the claystones and mudstones were sedimentary rocks of the upper continental crust of old cratonic areas, where the protolith had a moderately felsic character. Weathering and recycling processes modified the original chemical composition to some extent. However, during Rhaetian and early Hettangian, some geochemical data in the south-eastern segment of the MPT suggest significant input from a mafic volcanic protolith. Moreover, a clear enrichment in rare-earth elements was observed in few samples, caused by admixtures of accessory minerals (being a main carrier of REE). Nevertheless, based on currently obtained data, the Rhaetian–Hettangian concentrations of REE (and other trace elements) in the MPT are low and they are of scientific indicative significance, not of raw material importance.

2

New data on the continental deposits from the Cao Bang Basin (Cao Bang-Tien Yen Fault Zone, NE Vietnam) - biostratigraphy, provenance and faciespattern

Wysocka A., Pha D. P., Durska E., Czarniecka U., Thang D. V., Filipek A., Cuong N. Q., Tuan D. M., Huyen N. X., Tha H.V.

Acta Geologica Polonica

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2018

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Vol. 68, no. 4

689--709

EN

The Cao Bang Basin is the northernmost of the basins related to the Cao Bang-Tien Yen Fault Zone in northern Vietnam. The basin is filled with a thick series of continental deposits. However, the exact age of the sedimentary basin infill has been under discussion for a long time. Because of new published data, the authors have decided to revisit this basin. Palynological data has allowed us to assign the Cao Bang Basin infill to the Lower Oligocene PC1 complex of the Shangcun Fm. (southern China). Among the saccate grains of gymnosperms, the domination of Cathaya and Pinus was observed, whereas angiosperms are represented by Carya, Celtis, Hammamelidaceae, Ulmus and also Pterocarya, Quercus, the Castanea–Castanopsis–Lithocarpus group, and the Loranthaceae. Among pteridophytes occur Laevigatosporites, Osmundaceae, and Pteris. The sedimentological features of the Cao Bang Basin are distinct from those of other basins from the Cao Bang-Tien Yen Fault Zone. The basin is filled with a wide variety of clastic deposits, from some of coarse-grained, alluvial-fan origin, through sandy beds of fluvial origin up to fine, organic-rich lacustrine deposits. The coarse-grained lithofacies are built of clasts derived mainly from local sources. The sandstones from the basin equally are submature or immature. They contain a lot of lithoclasts, the composition of which depends on the sample location within the basin. The potential source area is composed of older sedimentary units and of granitic rocks. The geochemical samples studied reflect the geochemical composition of silicic source rocks with only a minor contribution of basic components. The succession that fills the basin is interpreted as a typical fill for relatively long-lasting evolving half-graben or strike-slip basins. Moreover, the basin is partly occupied by a subsequent present-day sedimentary basin of Quaternary age.

3

Effect of tree provenance on basic wood density of Norway spruce (Picea Abies [L.] Karst.) grown on an experimental plot at Siemianice Forest Experimental Station

Szaban J., Kowalkowski W., Karaszewski Z., Jakubowski M.

Drewno : prace naukowe, doniesienia, komunikaty

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2014

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vol. 57, nr 191

135--143

EN

The paper presents a comparison of the density of seven provenances of spruce trees, grown on an experimental plot located at Siemianice Forest Experimental Station. This plot is a unique research area on which observations concerning the growth of spruce trees of different provenances have been conducted for 41 years. The conditions in which the trees grow are very similar and it may be assumed that provenance is the element differentiating growth and wood properties. Trees growing on this plot have reached such large dimensions that it was possible to collect experimental material in the form of blocks, from which wood samples for further tests were obtained. Analyses were conducted on 651 samples collected from spruce trees of 7 provenances (Orawa, Międzygórze, Nowe Ramuki, Istebna Bukowiec, Kartuzy, Zwierzyniec 281B, Zwierzyniec Lubelski). The results indicated that wood of each individual provenance differed significantly in terms of the analysed trait. It was found that wood coming from Zwierzyniec Lubelski had the greatest values of basic density, while the lowest values were recorded for the Orawa provenance. Moreover, the examined provenances were divided into four groups, thus creating a ranking list of provenances in terms of the basic wood density of Norway spruce.

PL

Artykuł zawiera porównanie gęstości siedmiu proweniencji świerka wyrosłych na powierzchni doświadczalnej na terenie LZD Siemianice. Powierzchnia ta jest unikatowym obiektem badawczym, na którym od wielu lat prowadzone są obserwacje dotyczące wzrostu świerka różnych pochodzeń. Warunki, w których wzrastają drzewa są do siebie bardzo zbliżone i można przyjąć, że elementem różnicującym wzrost i właściwości drewna jest ich pochodzenie. Drzewa rosnące na powierzchni osiągnęły na tyle duże rozmiary, że możliwym było pozyskanie materiału badawczego w formie wyrzynków, z których wyrobiono próbki drewna do dalszych badań. Badania przeprowadzono na 651 próbkach pozyskanych z 7 pochodzeń (Orawa, Międzygórze, Nowe Ramuki, Istebna Bukowiec, Kartuzy, Zwierzyniec, Zwierzyniec Lubelski). Uzyskane wyniki pozwalają stwierdzić, że drewno z poszczególnych pochodzeń istotnie różni się w zakresie badanej cechy. Ustalono, że w zakresie gęstości umownej najwyższe wartości przyjmuje drewno pochodzenia Zwierzyniec Lubelski, a najmniejsze wartości z proweniencji Orawa. Dokonano również podziału badanych pochodzeń na cztery grupy, tworząc tym samym „listę rankingową” najlepszych pochodzeń świerka pospolitego.

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Heavy-mineral, mineral-chemical and zircon-age constraints on the provenance of Triassic sandstones from the Devon coast, southern Britain

Morton Andrew, Hounslow Mark W., Frei Dirk

Geologos

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2013

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Vol. 19, No. 1-2

67--85

EN

An integrated heavy-mineral, mineral-chemical and zircon-dating study of the Triassic succession exposed on the south Devon coast, in the western part of the Wessex Basin, indicates derivation from a combination of granitic and metasedimentary lithologies of ages of mostly over 550 Ma. These sources were probably located at a relatively proximal location near the southern margin of the basin. Derivation from more distal sources in the Armorican Massif or local Variscan sources to the west appears unlikely in view of the scarcity of Permo-Carboniferous (Variscan-age) zircons. The Budleigh Salterton Pebble Bed Formation was derived from a different combination of source lithologies than the Otter Sandstone Formation, the former including staurolite-grade metasediments that were absent in the catchment area of the Otter Sandstone. The Devon coast succession has provenance characteristics that differ from equivalent sandstones further east in the Wessex Basin, and from sandstones in the East Irish Sea Basin to the north. These differences indicate that sediment supply patterns to the linked Triassic basin systems in southern Britain are complex, involving multiple distinct sub-catchment areas, and that heavy-mineral studies have considerable potential for unravelling these sub-catchment area sources.

5

Petrografia i proweniencja piaskowców jury dolnej formacji piaskowca z Koperszadów w jednostce kriżniańskiej rejonu Kop Sołtysich w Tatrach

Popiołek M., Salata D., Uchman A.

Przegląd Geologiczny

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2010

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Vol. 58, nr 2

154-162

EN

Petrographic types of sandstones belonging to the Baboš Quartzite Mb (Sinemurian) and the Waksmundzka Sandstone Mb (Sinemurian-Lotharingian) of the Med’odoly Sandstone Fm (Krina Unit, Fatricum) in the Kopy Sołtysie region were identified. In the literature, they were usually described as quartzites or quartzose sandstones, but in fact they represent quartz arenites or subarkose arenites. Their composition indicates that the source of clastic material was of a cratonic interior type or related to a recycled orogenic material rich in quartz. It is possible that the source was located in elevated parts of the Tatricum or Hronicum domains. Sedimentary features and facies context point to deepeningm of sedimentary environment from the shallower shelf (Baboš Quartzite Mb) to that of a deeper shelf (Waksmundzka Sandstone Mb).

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The Eastern Sudetic Island in the Early-to-Middle Turonian : evidence from heavy minerals in the Jerzmanice sandstones, SW Poland

Biernacka J., Józefiak M.

Acta Geologica Polonica

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2009

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Vol. 59, no. 4

545-565

EN

The Eastern Sudetic Island was an emerged area in the late Cretaceous shelf-sea of central Europe that delivered coarse siliciclastic material to adjacent basins. The extent of this land area during the Early-to-Middle Turonian has been reconstructed on the basis of a heavy-mineral analysis of the Jerzmanice sandstones from the North Sudetic Basin. The heavy minerals studied predominantly derive from medium to high grade metamorphic rocks, such as granulites and metabasites, calc-silicate rocks, mica schists and gneisses, and from garnet peridotites and pegmatites/granites. The interpretation of various heavy mineral species provides evidence that the major part of the detritus constituting the Jerzmanice sandstones was supplied from a relatively small area of the fore-Sudetic part of the Gory Sowie Massif and its immediate vicinity, approx. 50 km away from the depositional site. Heavy minerals and particularly the chemical characteristics of detrital garnets, Cr-spinels and tourmalines, have turned out to be excellent indicators of the provenance of these mature late cretaceous sandstones.

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Wykorzystanie instrumentalnej neutronowej analizy aktywacyjnej w badaniu proweniencji rzeźby alabastrowej "Madonna Jackowa" z XIV wieku

Pańczyk E., Rowińska L., Nalepa B., Waliś L.

Analityka : nauka i praktyka

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2006

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nr 1

30-32