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Wyszukujesz frazę "Scleractinian corals" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Jurajskie korale w Polsce
Jurassic corals in Poland
Autorzy:
Roniewicz, E.
Powiązania:
https://bibliotekanauki.pl/articles/2077293.pdf
Data publikacji:
2004
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
jura
facja korali
środowisko
skleraktinie
korale
Jurassic
scleractinian corals
environment
coral facies
Opis:
In the epicontinental Jurassic of Poland, scleractinian corals appeared in the Bathonian, but only in the Middle Oxfordian-Lower Kimmeridgian became a significant element of the shallow-water fauna. Over the whole area, Upper Jurassic coral facies are situated above the Oxfordian sponge megafacies. Middle Oxfordian Jurassic corals are the best known from the NE margin of the Holy Cross Mts and represented chiefly by lamellate colonies. The Upper Oxfordian and Kimmeridgian coral facies extends from the Pomerania, through central Poland to the fore-Carpathian region. Taxonomical and morphotypical coral diversifications of the Upper Oxfordian and Kimmeridian were higher than that of the Middle Oxfordian. In the Tethyan region, corals are known from the exotic pebbles of the Stramberk-type Tithonian limestones in the Carpathian Flysh and Pieniny Klippen Belt. The arguments against the interpretation of epicontinental coral accumulations as reefs, are as follows: abundance of lamellate corals and epithecate phaceloid taxa (the latter incapable to repair skeletal damages), high taxonomical diversification and frequency of corals with menianes representing presumable adaptations to filtering mode of nutrition, comparable rate of growth of coral constructions and of accumulation of surrounding sediment, association of corals characterized above with soft bottom and turbid water.
Źródło:
Volumina Jurassica; 2004, 2, 1; 83-98
1896-7876
1731-3708
Pojawia się w:
Volumina Jurassica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kolonie korali z muszlowców ostrygowych i oolitów dolnego kimerydu Małogoszcza
Coral lumps in Early Kimmeridgian oyster shellbeds and oolites ot Małogoszcz
Autorzy:
Radwański, A.
Roniewicz, E.
Powiązania:
https://bibliotekanauki.pl/articles/2077312.pdf
Data publikacji:
2005
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Scleractinian corals
oyster shellbed
eco-taphonomy
environment
Kimmeridgian
Małogoszcz
Polska
koralowce Scleractinia
muszlowiec ostrygowy
ekotafonomia
środowisko
Polska
Opis:
Scleractinian corals occurring scarcely in the Lower Kimmeridgian Actinostl'eon (=Lopha, =Alectryonia) shellbeds at Malogoszcz in the Holy Cross Mountains, Central Poland, are represented by abraded colonies densely riddled by rock-boring bivalves (Lithophaga inclusa Phillips, GastTOchaena sp.) and polychaetes (potamilla sp.). The taxonomically recognised specimens include C01nplexastrea bUJ'gundiae (de Blainville, 1830), D 'imorphocoenia sp., Ovalastrea caryophylloides (Goldfuss, 1826), and Thamnasteria graeilis (Miinster, 1826). AlI colonies are preserved in the form of hollows, the wall s of which bear moulds of coral calyces, and of bivalve and polychaete borings. Taking into account the structural features of shellbeds and their faunistic content (uprooted crinoids Apioerinites, dug-out deeply-infaunal bivalves), stormy agitation is postulated as a basic agent responsible for damaging AeUnostreon communities, and their associates. The studied corals are thought to have lived aside the Aetinostreon gardens, up on a muddy bottom, from where they have been stirred-up during the storm cataclysm, having been then abraded and riddled by rock-borers repeatedly until laid down in a shellbed and transferred in to the fossil record. The extremely shallow-water conditions, under which the ostreid Actinostreon has lived, suggest the typically opportunistic nature or the associated corals, the same as of Ovalastrea caryophylloides (Goldfuss, 1826) from oolitic shoals, and the only colony of which completes the coral assemblage of Malogoszcz. The opportunism or ali these corals differs them from the habit of hermatypie forms from coeval and Oxfordian patch-reef communities of the Holy Cross Mountains (ef. Roniewicz & Roniewicz 1968, 1971).
Źródło:
Volumina Jurassica; 2005, 3, 1; 97--107
1896-7876
1731-3708
Pojawia się w:
Volumina Jurassica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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