Ecostratigraphy of benthic foraminifera for interpreting Arctic record of Early Toarcian biotic crisis (Northern Siberia, Russia)

Nikitenko, B.L.; Reolid, Matías; Глинских, Л. А.

doi:10.1016/j.palaeo.2013.03.003

Cited by 34 publications

(10 citation statements)

References 59 publications

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“…However, many authors have attempted to ascertain palaeoecology from ancient sediments by placing agglutinated foraminifera into groups on the basis of their morphology; these 'morphogroups' are thought to be indicative of their ecology (e.g. Nagy 1992; van den Akker et al 2000; Kender et al 2008a, b;Nagy et al 2009;Nikitenko et al 2013). These are based on studies of modern foraminifera and bottom water properties, such as living depth, productivity and ecological disturbance (Jones & Charnock 1985;Kaminski et al 1995).…”

Section: Ecological Implicationsmentioning

confidence: 99%

Modern deep-water agglutinated foraminifera from IODP Expedition 323, Bering Sea: ecological and taxonomic implications

Kender

Kaminski

2017

Journal of Micropalaeontology

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Despite the importance of the Bering Sea for subarctic oceanography and climate, relatively little is known of the foraminifera from the extensive Aleutian Basin. We report the occurrence of modern deep-water agglutinated foraminifera collected at seven sites cored during Integrated Ocean Drilling Program (IODP) Expedition 323 in the Bering Sea. Assemblages collected from core-top samples contained 32 genera and 50 species and are described and illustrated here for the first time. Commonly occurring species include typical deep-water Rhizammina, Reophax, Rhabdammina, Recurvoides and Nodulina. Assemblages from the northern sites also consist of accessory Cyclammina, Eggerelloides and Glaphyrammina, whilst those of the Bowers Ridge sites consist of other tubular genera and Martinottiella. Of the studied stations with the lowest dissolved oxygen concentrations, the potentially Bering Sea endemic Eggerelloides sp. 1 inhabits the northern slope, which has the highest primary productivity, and the potentially endemic Martinottiella sp. 3 inhabits Bowers Ridge, which has the lowest oxygen concentrations but relatively low annual productivity. Martinottiella sp. 3, with open pores on its test surface, has previously been reported in Pliocene to Recent material from Bowers Ridge. Despite relatively small sample sizes, ecological constraints may imply that the Bering Sea experienced high productivity and reduced oxygen at times since at least the Pliocene. We note the partially endemic nature of the agglutinated foraminiferal assemblages, which may at least in part be due to basin restriction, the geologically long time period of reduced oxygen, and high organic carbon flux. Our results indicate the importance of gathering further surface sample data from the Aleutian Basin.

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Section: Ecological Implicationsmentioning

confidence: 99%

Modern deep-water agglutinated foraminifera from IODP Expedition 323, Bering Sea: ecological and taxonomic implications

Kender

Kaminski

2017

Journal of Micropalaeontology

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“…The presence of Lenticulina sp. in the assemblage with other bioclasts points to a moderately deep, openmarine environment (HUGHES, 2000;REOLID et al, 2008aREOLID et al, , 2008bNIKITENKO et al, 2013).…”

Section: Paleoenvironmental Implications Of Benthic Foraminifera and mentioning

confidence: 99%

Jurassic-Cretaceous transition on the Getic carbonate platform (Southern Carpathians, Romania): Benthic foraminifera and algae

Mircescu¹,

Pleș²,

Bucur³

et al. 2016

Carnets Geol.

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Abstract:The carbonate succession of the Piatra Craiului Massif, i.e., the eastern part of the Getic carbonate platform (Southern Carpathians, Romania), comprises reefal and peritidal limestones that contain a diverse microfossil assemblage composed mainly of calcareous green algae and benthic foraminifera. The biostratigraphically most significant benthic foraminifera found in the several sections studied are described; some (Anchispirocyclina lusitanica, Neokilianina rahonensis, Bramkampella arabica, Everticyclammina praekelleri) are reported for the first time in this area. Hence, assemblages of both foraminifera and calcareous algae characterize three biostratigraphic intervals in the studied succession, the Kimmeridgian -lower Tithonian, the upper Tithonian -lower Berriasian, and the upper Berriasian -? lower Valanginian intervals. The main microfacies types (bioclastic rudstone, coral-microbial boundstone, bioclastic grainstone, interbedded mudstones and wackestones with cyanobacteria nodules) as well as both the foraminifera and the calcareous algae are paleoecological indicators that may contribute to the decipherment of the depositional environments and to building a depositional model for the eastern part of the Getic carbonate platform at the Late Jurassic-Early Cretaceous transition. Key-words:• Résumé : Passage Jurassique-Crétacé sur la plate-forme carbonatée gétique (Carpathes mé-ridionales, Roumanie) : Foraminifères et algues benthiques.-La série carbonatée du Massif de Piatra Craiului, c'est-à-dire de la partie orientale de la plate-forme carbonatée gétique (Carpathes méri-dionales, Roumanie), est constituée de calcaires récifaux et péritidaux qui recèlent des associations variées de microfossiles constituées d'algues vertes calcaires et de foraminifères benthiques essentiellement. Parmi les foraminifères benthiques identifiés dans les nombreuses coupes étudiées, nous décri-vons ceux auxquels on attribue une certaine valeur biostratigraphique. Quelques-uns (Anchispirocyclina lusitanica, Neokilianina rahonensis, Bramkampella arabica, Everticyclammina praekelleri) sont signalés pour la première fois dans ce secteur. De ce fait, dans la série étudiée, grâce aux associations combinées de foraminifères et d'algues calcaires, nous caractérisons trois intervalles biostratigraphiques : le Kimméridgien -Tithonien inférieur, le Tithonien supérieur -Berriasien inférieur et le Berriasien supé-rieur -? Valanginien inférieur. Les principaux types de microfaciès (rudstone bioclastique, boundstone corallien-microbien, grainstone bioclastique, alternances de mudstones et de wackestones à nodules cyanobactériens) sont des indicateurs paléoécologiques qui, avec les foraminifères et les algues calcaires, peuvent contribuer au décryptage des environnements de dépôt et à la construction d'un modèle dépositionnel pour la partie orientale de la plate-forme carbonatée gétique à la transition du Jurassique supérieur au Crétacé inférieur.

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“…The analysis of benthic foraminiferal morphogroups has been used to interpret palaeoenvironmental conditions before, during and after the T‐OAE (e.g. Reolid et al 2012, 2014, 2019a,b; Nikitenko et al 2013; Rita et al 2016; Jozsa et al 2018). The morphogroup distribution and nomenclature used in this work follows that of Reolid et al (2019a), who recognized 11 morphogroups (MG).…”

Section: Methodsmentioning

confidence: 99%

Cyclic environmental changes during the Early Toarcian at the Mochras Farm Borehole (Wales): a variable response of the foraminiferal community

Rodrı́guez-Tovar

Pardo‐Igúzquiza

Reolid

2021

LET

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Cyclostratigraphical analysis of the foraminiferal assemblages from the Early Toarcian at the Mochras Farm Borehole (Wales) was conducted in order to evaluate the incidence of cyclic palaeoenvironmental changes on the foraminiferal community. Different variables such as type of morphogroup, evolutionary strategy, habitat, particular taxa, diversity and abundance were studied using the Lomb-Scargle periodogram implemented in the computer program SLOMBS. A well-developed cyclostratigraphical pattern is recognized, with the presence of several cycles (in metres) at 3.

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Ecostratigraphy of benthic foraminifera for interpreting Arctic record of Early Toarcian biotic crisis (Northern Siberia, Russia)

Cited by 34 publications

References 59 publications

Modern deep-water agglutinated foraminifera from IODP Expedition 323, Bering Sea: ecological and taxonomic implications

Modern deep-water agglutinated foraminifera from IODP Expedition 323, Bering Sea: ecological and taxonomic implications

Jurassic-Cretaceous transition on the Getic carbonate platform (Southern Carpathians, Romania): Benthic foraminifera and algae

Cyclic environmental changes during the Early Toarcian at the Mochras Farm Borehole (Wales): a variable response of the foraminiferal community

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