scholarly journals How to react to shallow water hydrodynamics: The larger benthic foraminifera solution

2011 ◽  
Vol 81 (1-2) ◽  
pp. 63-76 ◽  
Author(s):  
Antonino Briguglio ◽  
Johann Hohenegger
Keyword(s):  
Shallow Water ◽  
Benthic Foraminifera ◽  
Larger Benthic Foraminifera

Imperforate Larger Benthic Foraminifera from Shallow-water Carbonate Facies (middle and Late Eocene), Zagros Mountains, Iran

2019 ◽  
Vol 49 (3) ◽  
pp. 275-302 ◽  
Author(s):  
Elham Nafarieh ◽  
Carme Boix ◽  
Erzika Cruz-Abad ◽  
Ebrahim Ghasemi-Nejad ◽  
Alireza Tahmasbi ◽  
...  
Keyword(s):  
Shallow Water ◽  
Benthic Foraminifera ◽  
Late Eocene ◽  
Photic Zone ◽  
Zagros Mountains ◽  
Carbonate Facies ◽  
Foraminiferal Assemblage ◽  
Larger Benthic Foraminifera ◽  
Water Carbonate ◽  
Shallow Water Carbonate

Abstract We studied the architecture and biostratigraphical distribution of the imperforate larger benthic foraminifera from the upper part of the Jarhum Formation in the Fars Interior (Zagros, Iran) and identified 15 taxa belonging to the families Coskinolinidae, Orbitolinidae, Austrillinidae, Praerhapydioninidae and Soritidae. This foraminiferal assemblage indicates deposition in warm, shallow (upper photic zone), relatively oligotrophic conditions compatible with an inner-ramp setting. The age attributed to the assemblage is Bartonian-earliest Priabonian.

scholarly journals COMMENTS ON “STRATIGRAPHIC DISTRIBUTION OF SHALLOW-WATER BENTHIC FORAMINIFERA FROM THE LOWER CRETACEOUS TAFT FORMATION, CENTRAL IRAN (YAZD BLOCK), WITH EVIDENCE FOR THE IMPORTANCE OF HIATUSES” BY GHEIASVAND, M. ET AL. [ANNALES DE PALÉONTOLOGIE, 2020, 154 (3), 102399] AND RELATED PAPERS

2021 ◽  
pp. 3-8
Author(s):  
FELIX SCHLAGINTWEIT
Keyword(s):  
Shallow Water ◽  
Benthic Foraminifera ◽  
Lower Cretaceous ◽  
Central Iran ◽  
Migration Patterns ◽  
Larger Benthic Foraminifera ◽  
Multidisciplinary Study ◽  
Potential Index

Gheiasvand et al. (2020) use the two larger benthic foraminifera species Simplorbitolina manasi Ciry & Rat and Mesorbitolina parva (Douglass) (Orbitolinidae) as upper Aptian “potential index fossils” for parts of the Taft Formation in Central Iran. This age assignment is accompanied by changes to well-established orbitolinid biozona-tions (e.g. occurrence of Praeorbitolina in the late Aptian) with far-reaching implications. These data were also used in a later “multidisciplinary study” (Gheiasvand et al., 2021) for isotopic correlations (e.g., location of OAE`s), delimitation of palaeobiogeographic faunal provinces and related migration patterns. It is shown herein that the taxa identified as S. manasi and M. parva belong to Iraqia simplex Henson and Palorbitolina lenticularis (Blumenbach) respectively documenting a lower and not an upper Aptian age. This revised age and the different taxononomic inventory do not question all results obtained by Gheiasvand et al. (2020, 2021), but provide a revised basis interpretation.

scholarly journals FIRST RECORD OF CALCAREOUS GREEN ALGAE (DASYCLADALES, HALIMEDACEAE) FROM THE PALEOCENE CHEHEL KAMAN FORMATION OF NORTH-EASTERN IRAN (KOPET-DAGH BASIN)

2021 ◽  
pp. 51-64
Author(s):  
FELIX SCHLAGINTWEIT ◽  
KOOROSH RASHIDI ◽  
ABDOLMAJID MOSAVINIA
Keyword(s):  
Shallow Water ◽  
Green Algae ◽  
Benthic Foraminifera ◽  
First Record ◽  
Larger Benthic Foraminifera ◽  
Eastern Iran ◽  
North Eastern ◽  
Kopet Dagh ◽  
First Time ◽  
Upper Paleocene

The micropalaeontological inventory of the shallow-water carbonates of the Paleocene Chehel-Kaman Formation cropping out in the Kopet-Dagh Basin of north-eastern Iran is poorly known. New sampling has evidenced for the first time the occurrence of layers with abundant calcareous green algae including Dasycladales and Halimedaceae. The following dasycladalean taxa have been observed: Jodotella veslensis Morellet & Morellet, Cymopolia cf. mayaense Johnson & Kaska, Neomeris plagnensis Deloffre, Thyrsoporella-Trinocladus, Uteria aff. merienda (Elliott) and Acicularia div. sp. The studied section is devoid of larger benthic foraminifera and can be referred to the middle-upper Paleocene (SBZ 2-4) due to the presence of Rahaghia khorassanica (Rahaghi). Some of the dasycladalean taxa are herein reported for the first time not only from Iran but also the Central Neotethyan realm.

Larger Benthic Foraminifera from the Panna and Mukta Fields Offshore India: Paleobiogeographical Implications

2019 ◽  
Vol 49 (3) ◽  
pp. 243-258
Author(s):  
Laura J. Cotton ◽  
V. Paul Wright ◽  
Andrew Barnett ◽  
Willem Renema
Keyword(s):  
Shallow Water ◽  
Benthic Foraminifera ◽  
Late Eocene ◽  
Marine Biodiversity ◽  
Upper Eocene ◽  
Larger Benthic Foraminifera ◽  
Geographic Ranges ◽  
Extinction Event ◽  
Global Events ◽  
Insight Into

Abstract A previously undocumented, diverse assemblage of very shallow-water larger benthic foraminifera (LBF) is described from the Panna-Mukta fields, offshore India. This location lies at the margin of the late Eocene to early Miocene Arabian Peninsula marine biodiversity hotspot. The assemblage has similar characteristics to those from the Middle East, Oman and Turkey, but shares little in common with onshore western Indian assemblages. In addition, the material contains several unusual and possibly new taxa, and extends the geographic ranges of several existing LBF. The succession spans the Eocene and Oligocene, with an unconformity between the middle and upper Eocene. As such it offers insight into the response of shallow-water taxa to the Eocene–Oligocene Transition extinction event from an unusual setting in a little studied region. Our data show that LBF taxonomic richness in the Panna Mukta fields is comparable with highly diverse assemblages found in Oman, indicating it may be an eastward extension of this high diversity region. Moreover, significant decreases in diversity are seen between the middle and upper Eocene and the upper Eocene and Oligocene. Major extinctions are known to occur in global LBF records at both of these levels, and the Panna Mukta succession therefore further confirms these are global events, extending across the platform and having a dramatic (at least short-term) effect on high biodiversity regions.

scholarly journals ORBITOLINIDS AND OTHER LARGER BENTHIC FORAMINIFERA FROM THE APTIAN-ALBIAN OF TIBET: CRITICAL DISCUSSION OF SOME RECENTLY PUBLISHED DATA

2021 ◽  
pp. 17-23
Author(s):  
FELIX SCHLAGINTWEIT
Keyword(s):  
Shallow Water ◽  
Benthic Foraminifera ◽  
Lower Cretaceous ◽  
Critical Discussion ◽  
Individual Species ◽  
Published Data ◽  
Larger Benthic Foraminifera ◽  
Stratigraphic Ranges

Orbitolinidae together with other larger benthic foraminifera are particularly important in Lower Cretaceous shallow-water biostratigraphy provided that they are correctly identified. Especially in the case of the Orbitolininae (with complex embryo), their biostratigraphic range with overlapping ranges corresponds to different lineages displaying ancestor-descendant relationship (e.g., Praeorbitolina-Mesorbitolina). In the last fifty years well established and repeatedly confirmed taxon ranges have been largely extended thereby diluting or negating any biostratigraphic value to individual species. Some biostratigraphic data provided by BouDagher-Fadel et al. (2017) from the Aptian-Albian of Tibet that are contradicting previous results are reviewed herein. This publication mostly refers to the stratigraphic ranges of Praeorbitolina cormyi Schroeder and Pseudochoffatella cuvillieri Deloffre towards the top of the Albian, and that of Palorbitolina lenticularis (Blumenbach) into the late Aptian, as well as some misidentifications.

A preliminary investigation of Eocene larger benthic foraminifera assemblages from Alpine and molasse-type deposits of the Hellenic peninsula (Greece)

2021 ◽  
Vol 70 ◽  
pp. 100468
Author(s):  
Vasiliki-Grigoria Dimou ◽  
Olga Koukousioura ◽  
Margarita D. Dimiza ◽  
Maria V. Triantaphyllou ◽  
György Less ◽  
...  
Keyword(s):  
Benthic Foraminifera ◽  
Preliminary Investigation ◽  
Larger Benthic Foraminifera

scholarly journals Upper Barremian-Lower Aptian Urgonian limestone's in the Rakova bara section (Carpatho-balkanides, NE Serbia): Analysis and comparison with adjacent areas

2010 ◽  
Vol 90 (1) ◽  
pp. 1-16 ◽  
Author(s):  
Ivana Carevic ◽  
Darivojka Ljubovic-Obradovic ◽  
Monika Bozinovic ◽  
Velimir Jovanovic
Keyword(s):  
Shallow Water ◽  
Benthic Foraminifera ◽  
Carbonate Sedimentation ◽  
Lower Aptian ◽  
First Time ◽  
Water Carbonate ◽  
Shallow Water Carbonate

The Upper Barremian-Lower Aptian succession is recorded from a limestone sequence that crops out in the surrounding of Rakova Bara in the Carpatho-Balkanides range in northeastern Serbia. The micropalaeontological and sedimentological studies lead to recognition of the two types of microfacies. The benthic foraminiferal association consists of Vercorsella laurentii, Rumanoloculina robusta, Praechrysalidina infracretaceae, Dictyoconus gr. arabicus, Debarina hahounerensis, Charentia cuvilieri and Pseudocyclammina lituus that confirm the stratigraphical and palaeoenvironmental connection of the microfossil assemblages with the classical Urgonian-type, shallow-water carbonate sedimentation. The association documented for the first time in the study area is considered typical of the Tethyan Realm. The stratigraphical position of the benthic foraminifera species within the Upper Barremian-Lower Aptian interval is discussed. The Urgonian Limestone's of the studied section are comparable with adjacent areas of eastern Serbia and Romanian South Carpathians. .

Sign in / Sign up

Export Citation Format

Share Document