About: Palaeoenvironments and palaeoceanography changes across the Jurassic/Cretaceous boundary in the Arctic realm: case study of the Nordvik section (north Siberia, Russia)

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About: Palaeoenvironments and palaeoceanography changes across the Jurassic/Cretaceous boundary in the Arctic realm: case study of the Nordvik section (north Siberia, Russia) Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://dx.doi.org/10.3402/polar.v33.19714
Description	The Jurassic/Cretaceous transition was accompanied by significant changes in palaeoceanography and palaeoenvironments in the Tethyan Realm, but outside the Tethys such data are very scarce. Here we present results of a study of the most complete section in the Panboreal Superrealm, the Nordvik section. Belemnite d18O data show an irregular decrease from values reaching up to +1.6 %o in the Middle Oxfordian and from +0.8 to -1.7 %o in the basal Ryazanian, indicating a prolonged warming. The biodiversity changes were strongly related to sea-level oscillations, showing a relatively low belemnite and high ammonite diversity during sea-level rise, accompanied by a decrease of the macrobenthos taxonomical richness. The most prominent sea-level rise is marked by the occurrence of open sea ammonites with Pacific affinities. Peak abundances of spores and prasinophytes correlate with a negative excursion in organic carbon d13C near the J/K boundary and could reflect blooms of green algae caused by disturbance of the marine ecosystem. The Jurassic/Cretaceous transition was accompanied by significant changes in palaeoceanography and palaeoenvironments in the Tethyan Realm, but outside the Tethys such data are very scarce. Here we present results of a study of the most complete section in the Panboreal Superrealm, the Nordvik section. Belemnite d18O data show an irregular decrease from values reaching up to +1.6 %o in the Middle Oxfordian and from +0.8 to -1.7 %o in the basal Ryazanian, indicating a prolonged warming. The biodiversity changes were strongly related to sea-level oscillations, showing a relatively low belemnite and high ammonite diversity during sea-level rise, accompanied by a decrease of the macrobenthos taxonomical richness. The most prominent sea-level rise is marked by the occurrence of open sea ammonites with Pacific affinities. Peak abundances of spores and prasinophytes correlate with a negative excursion in organic carbon d13C near the J/K boundary and could reflect blooms of green algae caused by disturbance of the marine ecosystem. (en)
Title	Palaeoenvironments and palaeoceanography changes across the Jurassic/Cretaceous boundary in the Arctic realm: case study of the Nordvik section (north Siberia, Russia) Palaeoenvironments and palaeoceanography changes across the Jurassic/Cretaceous boundary in the Arctic realm: case study of the Nordvik section (north Siberia, Russia) (en)
skos:prefLabel	Palaeoenvironments and palaeoceanography changes across the Jurassic/Cretaceous boundary in the Arctic realm: case study of the Nordvik section (north Siberia, Russia) Palaeoenvironments and palaeoceanography changes across the Jurassic/Cretaceous boundary in the Arctic realm: case study of the Nordvik section (north Siberia, Russia) (en)
skos:notation	RIV/00216208:11310/14:10288477!RIV15-MSM-11310___
http://linked.open...avai/riv/aktivita	I P S Z
http://linked.open...avai/riv/aktivity	I, P(GA205/07/1365), S, Z(AV0Z30130516), Z(MSM0021620855)
http://linked.open...iv/cisloPeriodika	březen
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Košťák, Martin Mazuch, Martin
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	35615
http://linked.open...ai/riv/idVysledku	RIV/00216208:11310/14:10288477
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	palaeoceanography; Arctic Realm; J/K boundary; stable isotopes; biodiversity (en)
http://linked.open.../riv/klicoveSlovo	Arctic Realm palaeoceanography stable isotopes biodiversity J/K boundary
http://linked.open...odStatuVydavatele	NO - Norské království
http://linked.open...ontrolniKodProRIV	[CA5C52F7EF23]
http://linked.open...i/riv/nazevZdroje	Polar Research
http://linked.open...in/vavai/riv/obor	DB
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	10 (xsd:int)
http://linked.open...vavai/riv/projekt	Integrated stratigraphy and geochemistry of the Jurassic/Cretaceous boundary strata in the Tethyan and Boreal Realms
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	33
http://linked.open...iv/tvurceVysledku	Pruner, Petr Žák, Karel Košťák, Martin Skupien, Petr Chadima, Martin Mazuch, Martin Dzyuba, Oksana S. Nikitenko, Boris L. Rogov, Mikhail A. Zakharov, Victor A.
http://linked.open...ain/vavai/riv/wos	000333596900001
http://linked.open...n/vavai/riv/zamer	Zemský systém v průsečíku geologických procesů, vývoje života, klimatických a antropogenních vlivů Material flow mechanisms in the upper spheres of the Earth
issn	0800-0395
number of pages	19 (xsd:int)
http://bibframe.org/vocab/doi	10.3402/polar.v33.19714
http://localhost/t...ganizacniJednotka	11310

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