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    Wyświetlanie 1-6 z 6
    Tytuł:
    Dynamika rozwoju utworów koralowych środkowego oksfordu okolic Bałtowa
    Middle Oxfordian coral facies of the Bałtów region, NE margin of the Holy Cross Mts, Poland
    Autorzy:
    Gutowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2077305.pdf
    Data publikacji:
    2004
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    rafa
    utwory koralowe
    Bałtów
    coral facies
    reefs
    syndepositional activity of extensional blocks
    Opis:
    Coral facies developed on the Middle Oxfordian carbonate ramp were controlled in the region of Bałtów, NE margin of the Holy Cross Mts., Poland, by syndepositional activity of extensional fault blocks. Elevated parts of sea bottom were occupied since Early Oxfordian time by sponge bioherms successively colonized by coral reefs when grown up to the sea level. Micritic sedimentation prevailed in interbioherm denivelations. This micritic succession was replaced by soft-bottom coral buildups constructed by flat coral colonies, typical of a relatively quiet environment of the depths 20-70 m, and finally by coarse bioclastic grainstones and oncolites which are interpreted as talus of the coral reef constructed on tops of former sponge bioherms by branched and hemispherical coral colonies in very dynamic and extremely shallow water conditions.
    Źródło:
    Volumina Jurassica; 2004, 2, 1; 17-28
    1896-7876
    1731-3708
    Pojawia się w:
    Volumina Jurassica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of the Mid-Polish Troughversus Late Jurassic evolution in the Carpathian Foredeep area
    Autorzy:
    Matyja, B. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059116.pdf
    Data publikacji:
    2009
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Mid-Polish Trough
    Late Jurassic
    northern Tethys shelf
    sponge megafacies
    Štramberk-type coral reefs
    Opis:
    Late Jurassic is the key epoch for an idea of the existence of the southeastern segment of the Mid-Polish Trough. New data on the evolution of Upper Jurassic deposits in the Carpathian Foredeep substrate provide information that there is a complete Oxfordian through Valanginian succession in the area of thick Oxfordian and Kimmeridgian deposits, proving the occurrence of the trough. Thickness of the Oxfordian and Kimmeridgian succession is twice to three times smaller than previously assumed. The facies development patterndistinguishes this area from the rest of the Late Jurassic basin. The sponge megafacies ranges up into the lower most Tithonian in this region.Tithonian Štramberk-type reefs occur near the Carpathian thrust front and alongside. The Late Jurassic and earliest Cretaceous facies are latitudinally arranged. Starting from the latest Middle Jurassic, the study area showed strong structural and facies relations to the Tethys do main. The collected data contradict the hypothesis that the Mid-Pol ish Trough continues in the Carpathian Foredeep substrate.
    Źródło:
    Geological Quarterly; 2009, 53, 1; 49-49
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reefal environments and sedimentary processes of the Anisian Karchowice Beds in Upper Silesia, southern Poland
    Autorzy:
    Matysik, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/191930.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    Middle Triassic
    palaeoenvironments
    sponge-coral reefs
    Upper Silesia
    Opis:
    The Anisian shallow-marine Karchowice Beds of the Upper Silesia represent reefal habitats and circum-reefal environments, where biological-mechanical interactions determine sedimentary processes and facies pattern. The purpose of this study was recognition of the interaction between biological and mechanical controls of carbonate deposition. Such interdependence resulted in considerable lateral variability of thickness and lithological features, observed at a distance of 25 km. The western part of the basin is dominated by proximal facies (reefal facies), whereas the eastern one represents distal facies (fore-reef). Sedimentary succession in the western area is twice as thick than the eastern one. It resulted from different rate of subsidence owing to block tectonics, controlled by reactivated ancestral Silesian-Moravian Fault. Small-scale synsedimentary faults confirm syndepositional tectonic activity in the region. Palaeogeographical position caused that the Upper Silesia was strongly affected by monsoon climate, generating storms. These storms contributed to episodic deposition, prevailing during the sedimentation of Karchowice Beds. However, most of time was represented by prolonged non-deposition periods, recorded as interstratal hiatuses, but also by forming of firmgrounds, micritization and coating of bioclasts or substrate recolonisation by organisms.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2010, 80, No 2; 123-145
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Współczesne głębokomorskie budowle węglanowe - nieznany świat podmorskich oaz
    Modern deep-water carbonate buildups - the unknown world of submarine oases.
    Autorzy:
    Jakubowicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074947.pdf
    Data publikacji:
    2012
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    węglany
    budowle węglanowe
    kominy hydrotermalne
    wysięki węglowodorów
    głębokomorskie rafy koralowe
    kopiec
    cementacja węglanu
    carbonates
    carbonate buildups
    hydrothermal vents
    hydrocarbon seeps
    deep-water coral reefs
    mud mounds
    authigenic carbonate cementation
    Opis:
    Deep-marine carbonate buildups constitute one of the most spectacular and enigmatic features found on modern seafloors. Despite some characteristics shared by all the deep-marine carbonate buildups, they represent, in fact, several distinct types, which differ in terms of their geneses, as well as sedimentary, biotic and geochemical features. These structures can be roughly divided into hydrocarbon seep limestones, carbonate-built hydrothermal vents and deep-water coral reefs. The former group include carbonate concretions, lenses, mud mounds and mud volcanoes forming as a result of decrease in alkalinity, caused by an activity of methane-oxidizing microbes. The rare examples of hydrothermal-derived limestone columns, in turn, grow in response to mixing of ambient, cold seawater and warm, Ca2+-rich fluids originating from peridotite massifs. In contrast, growth of the deep-water coral reefs appears to be stimulated largely by hydrological and bathymetric constraints, whereas a potential input of fluid seepage is rather of subordinate importance in diagenetic lithification of these structures. Surprisingly, studies on deep-water carbonates may turn out to be relevant also for understanding the shallow-water carbonate factories, providing evidence, that abiotic factors are more important in marine limestone precipitation than previously thought.
    Źródło:
    Przegląd Geologiczny; 2012, 60, 6; 325-332
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microencruster-microbial framework and synsedimentary cements in the Štramberk Limestone (Carpathians, Czech Republic) : Insights into reef zonation
    Autorzy:
    Hoffmann, M.
    Kołodziej, B.
    Skupien, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/191832.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    coral reefs
    carbonate platforms
    microframework
    sedimentary breccia
    Moravia
    Jurassic
    Cretaceous
    Opis:
    The Štramberk Limestone (Tithonian–lower Berriasian) was developed on a northerly located, isolated intra-Tethyan carbonate platform. It is composed of various facies that can be observed in olistoliths and blocks embedded in the Cretaceous flysch of the Outer Carpathians in Moravia (Czech Republic). Corals, microbialites, microencrusters and synsedimentary cements contributed on various scales to the reef framework. The importance of corals and some microencrusters to the formation of the Štramberk reef complex is well recognized, while other components received less attention in previous studies. Two end members of boundstone types are described from the Kotouč Quarry, near Štramberk. Boundstone type A is dominated by phaceloid (branching-type) corals, encrusted by microbialites and microencrusters, in particular photophile species (“Lithocodium-Bacinella”, Koskinobullina socialis Cherchi et Schroeder, Iberopora bodeuri Granier et Berthou). Boundstone type B is composed of microencrusters, microbialites and synsedimentary isopachous fibrous cements, while corals are absent or subordinate. Microencrusters [Crescentiella morronensis (Crescenti), Labes atramentosa Eliášová, Perturbatacrusta leini Schlagintweit et Gawlick, Radiomura cautica Senowbari-Daryan et Schäfer, thin encrusting calcified sponges] are main biotic components of the microencruster-cement boundstone. Some identified microencrusters are known only or mostly from intra-Tethyan carbonate platforms. Except for C. morronensis, other common microencrusters in the coral-microbial boundstone (type A) are rare in the microencruster-cement boundstone (type B). The depositional setting of boundstone type A corresponds to a low-energy environment of an inner platform. Boundstone type B, until now not recognized in the Štramberk Limestone, was developed in a high-energy, upper fore-reef slope environment. Other important facies in the Kotouč Quarry are reef-derived breccias: matrix-supported breccia and clast-supported breccia with radiaxial-fibrous cement (showing some similarities to Triassic “evinosponges” cement), interpreted as being dominantly synsedimentary (pre-burial). The preliminary studies by the present authors, supported by observations under cathodoluminescence, highlight the significance of synsedimentary cementation for the formation of a boundstone framework (type B) and the stabilization of fore-reef, slope deposits.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2017, 87, 4; 325-347
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Community structure of macrozoobentos on artificial reef made from reef rubble and split rock in Tunda Island, province of Banten, Indonesia
    Autorzy:
    Setiadeswan, Ridlo
    Riyantini, Indah
    Mulyani, Yeni
    Pamungkas, Wahyuniar
    Powiązania:
    https://bibliotekanauki.pl/articles/1076630.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Artificial Coral Reef Community Structure
    Macrozoobenthos
    Reefs Rubble
    Split rock
    Tunda Island
    Opis:
    Tunda Island has underwater beauty that has the potential to be developed into a marine tourism object. One important part of this is the fringing reef around the island. Unfortunately, this has been severely degraded. This study aims to determine if reef rubble and split rock artificial reefs have the ability to be a living space for macrozoobenthos and to measure the potential community structure. The research was conducted in August 2018 - November 2018 in the eastern part of Tunda Island, and included monitoring the initial conditions, artificial reef creating and positioning, gathering and analyzing macrozoobenthos data. The macrozoobenthos data collection was carried out from September to November 2018 as 4 observations, and was obtained using the Belt Transect method. In the analysis, the community structure data retrieved was divided into 3 categories: diversity, abundance and dominance. The diversity index obtained ranged from 0.43 – 7.65, meaning that it is of low to moderate diversity. The abundance of macrozoobenthos ranged from 1 - 18 individuals /m2 on the rubble type artificial reef and 2.13 – 4.26 individuals /m2 on the split type artificial reefs, with the most common class being gastropods. On rubble type artificial reefs, 14 macrozoobenthos genera were found to be common, while 13 genera were observed in the split type. The genus found was Culcita sp., Chicoreus sp., Diadema sp., Chelidonura sp., Thrombus sp., Chromodoris sp., Cymatium sp., Trochus sp., Terebra sp., Dardanus sp., Malea sp., Oliva sp., Opheodosoma sp., Actinopyga sp., Conus sp., Enoplometopus sp., Cypracea sp., Lambis sp., and Phylidia sp. The dominance index value was in the range of 0.18-1.00 or low to high on both rubble and split types.
    Źródło:
    World News of Natural Sciences; 2019, 27; 128-140
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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