Proposal for the recognition of boundaries between Cretaceous stages by means of planktonic foraminiferal biostratigraphy

Bulletin of the Geological Society of Denmark ◽

10.37570/bgsd-1984-33-14 ◽

1984 ◽

Vol 33 ◽

pp. 163-169

Author(s):

Peter Marks

Keyword(s):

Planktonic Foraminifera ◽

Foraminiferal Biostratigraphy

Planktonic foraminifera are a much used biostratigraphic tool for the subdivision of the Cretaceous System from the Albian upwards. A proposal is given for the recognition of Cretaceous stages, using major biostratigraphic events to mark their boundaries. Thus, the extinction of Globotruncanita calcarata marks the Maastrichtian - Campanian boundary; the extinction of Dicarinel/a asymetrica the Campanian -Santonian boundary; the entry of D. asymetrica the Santonian - Coniacian boundary; the entry of Dicarinella primitiva with Marginotruncana ex gr. renzi -sinuosa the Coniacian -Turonian boundary; the extinction of Rotalipora cushmani the Turonian - Cenomanian boundary; the extinction of Planomalina buxtorfi the Cenomanian - Albian boundary.

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Planktonic and benthic foraminiferal biostratigraphy of the Middle Eocene–Lower Miocene successions from the Sivas Basin (Central Anatolia, Turkey)

Geologica Carpathica ◽

10.1515/geoca-2016-0002 ◽

2016 ◽

Vol 67 (1) ◽

pp. 21-40 ◽

Cited By ~ 3

Author(s):

Aynur Hakyemez ◽

Nazire Özgen-Erdem ◽

Özgen Kangal

Keyword(s):

Water Column ◽

Benthic Foraminifera ◽

Middle Eocene ◽

Planktonic Foraminifera ◽

Central Anatolia ◽

Successive Interval ◽

Lower Miocene ◽

Sivas Basin ◽

Algal Reef ◽

Foraminiferal Biostratigraphy

AbstractPlanktonic and benthic foraminifera are described from the Middle Eocene-Lower Miocene successions in the Sivas Basin, Central Anatolia. An integrated foraminiferal zonation provides new age assignments in terms of a great number of taxa for the studied sections. Four biostratigraphical intervals are first recorded based on the concurrent ranges of sporadically occurring but well preserved planktonic foraminiferal assemblages. The first interval characterized by the co-occurrences ofAcarinina bullbrooki, Truncorotaloides topilensisandTurborotalia cerroazulensisis referable to the E11 Zone of late Lutetian–early Bartonian. An assemblage yieldingParagloborotalia opimaaccompanied byGlobigerinella obesaforms a basis for the late Chattian O5 Zone. The successive interval corresponds to the late Chattian O6 Zone indicated by the presence ofGlobigerina ciperoensisandGlobigerinoides primordiusalong with the absence ofParagloborotalia opima. The early Aquitanian M1 Zone can be tentatively defined based mainly on the assemblage ofGlobigerina, Globigerinella, GloboturborotalitaandTenuitella. The biostratigraphical data obtained from the benthic foraminifera assign the studied sections to the SBZ 21–22, SBZ 23 and SBZ 24 ranging in age from Rupelian to Aquitanian. The SBZ 23 and 24 are well constrained biozones by the occurrences ofMiogypsinella complanataandMiogypsina gunteri, respectively, whereas the SBZ 21–22 defined by nummulitids and lepidocylinids in the Tethyan Shallow Benthic Zonation is characterized dominantly by peneroplids, soritids and miliolids in the studied sections. Benthic foraminiferal assemblages suggest different paleoenvironments covering lagoon, algal reef and shallow open marine whereas planktonic foraminifera provides evidence for relatively deep marine settings on the basis of assemblages characterized by a mixture of small-sized simple and more complex morphogroups indicative for intermediate depths of the water column.

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Planktonic Foraminiferal Biostratigraphy of the Upper Cretaceous of the Central European Basin

Geosciences ◽

10.3390/geosciences12010022 ◽

2022 ◽

Vol 12 (1) ◽

pp. 22

Author(s):

Danuta Peryt ◽

Zofia Dubicka ◽

Weronika Wierny

Keyword(s):

Upper Cretaceous ◽

Planktonic Foraminifera ◽

Regional Scale ◽

Warm Water ◽

Central European ◽

Central European Basin ◽

Correlation Potential ◽

Western Ukraine ◽

Foraminiferal Biostratigraphy

Planktonic foraminifera are one of the most stratigraphically important groups of organisms for the Cretaceous system. However, standard foraminiferal zonations based mostly on species from the Tethyan bioprovince are hardly applicable in temperate regions where warm-water taxa are scarce or lacking. We propose a foraminiferal zonation based on foraminiferal events recognized in the northern Foraminiferal Transitional Bioprovince, which likely has a high correlation potential at least at a regional scale. Fifteen planktonic foraminiferal zones are distinguished from the upper Albian up to the uppermost Maastrichtian strata in extra-Carpathian Poland and western Ukraine. From the bottom to the top, Thalmanninella appenninica, Th. globotruncanoides, Th. reicheli, Rotalipora cushmani, Whiteinella archaeocretacea, Helvetoglobotruncana helvetica, Marginotruncana coronata, M. sinuosa, Pseudotextularia nuttalli, Globotruncana linneiana, G. arca, Contusotruncana plummerae, Rugoglobigerina pennyi, Globotruncanella petaloidea and Guembelitria cretacea. These zones are calibrated by macrofaunal zonations.

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Planktonic foraminiferal biostratigraphy of the Limboto Limestone, Gorontalo Province, Indonesia

Kuwait Journal of Science ◽

10.48129/kjs.v48i1.6916 ◽

2020 ◽

Vol 48 (1) ◽

Author(s):

Aang P. Permana ◽

◽

Subagyo Pramumijoyo ◽

Akmaluddin Akmaluddin ◽

Didit H. Barianto ◽

...

Keyword(s):

Planktonic Foraminifera ◽

Time Interval ◽

Relative Age ◽

The North ◽

North Western ◽

Foraminiferal Biostratigraphy

The limestone research within the Limboto Basin of Gorontalo Province becomes a new challenge, particularly for the study of planktonic foraminiferal biostratigraphy. This study uses the data obtained from the measured section in the north-western part of Limboto Lake. The purpose of this study is to determine the planktonic foraminiferal biozonation and the relative age of Limboto limestones. The analyzed planktonic foraminiferal fossils can be classified as well to moderately preserved of various species, in the context of abundance, categorized as frequent to abundant. There are three recognized planktonic foraminiferal biozones, i.e., two biozones for Miocene age (M13b and M14) and one biozone for Pliocene age (PL1). The Miocene biozones are named as Globorotalia plesiotumida partial range zone (M13b) and Pulleniatina primalis-Globoquadrina dehiscens concurrent range zone (M14), while the name of Pliocene biozone is Globorotalia acostaensis partial range zone (PL1). The results of this study can be a reference to propose an age of Limboto Limestone Formation. Identification and demarcation of the Limboto Limestone Formation are based on the time interval and relative age of the formation based on planktonic foraminifera.

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Ostracods and foraminifera from the Early - Middle Eocene of Qeren Sartaba, Jordan Valley

Journal of Micropalaeontology ◽

10.1144/jm.10.1.95 ◽

1991 ◽

Vol 10 (1) ◽

pp. 95-107 ◽

Cited By ~ 17

Author(s):

A. Honigstein ◽

A. Rosenfeld ◽

C. Benjamini

Keyword(s):

Middle Eocene ◽

Planktonic Foraminifera ◽

Early Eocene ◽

Jordan Valley ◽

Central Jordan ◽

Species Groups ◽

Foraminiferal Biostratigraphy

Abstract. 23 species of ostracods and 20 species and species groups of planktonic foraminifera from the 80m thick Qeren Sartabasection, central Jordan Valley, are described and illustrated. The material is determined by planktonic foraminiferal biostratigraphy to belong to the latest Early Eocene (upper part of Zone P9) and the early Middle Eocene (Zone P10). The palaeoecology is representative of a pelagic marine shelf, with periodic events of shallowing and hardground formation.

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DSDP Site 594, Chatham Rise, New Zealand - Late Neogene planktonic foraminiferal biostratigraphy revised

Journal of Micropalaeontology ◽

10.1144/jm.13.2.93 ◽

1994 ◽

Vol 13 (2) ◽

pp. 93-101 ◽

Cited By ~ 4

Author(s):

N. De B. Hornibrook ◽

D. G. Jenkins

Keyword(s):

New Zealand ◽

Species Diversity ◽

Cold Water ◽

Planktonic Foraminifera ◽

Warm Water ◽

Effective Barrier ◽

Late Neogene ◽

First Time ◽

Foraminiferal Biostratigraphy ◽

Dsdp Site

Abstract. A restudy of the planktonic foraminifera at DSDP Leg 90, Site 594, has been made and consequently a revised scheme of late Neogene zones has been necessary. The Globorotalia sphericomiozea Zone (including G. conomiozea) is contracted to occupy a much smaller interval just below the Miocene/Pliocene boundary and the G. puncticulata, G. inflata and G. truncatulinoides Zones have been expanded. In the uppermost Miocene and Lower Pliocene, the standard regional planktonic foraminiferal datums provide a good correlation with DSDP Leg 29 Hole 284, DSDP Leg 90 Hole 593 and with New Zealand on-land palaeomagnetically-zoned sequences. They do not, however, correlate with the magnetochronology adopted in the Leg 90 Initial Reports for this interval in Hole 594 in which Chrons 4–6 are offset downwards against the foraminiferal datums. It is possible that there are unrecognized hiatuses in the Plio-Pleistocene.Higher in the Pliocene, very low species diversity of the cold-water faunas, scarcity of warm-water foraminiferal zonal species, and their much later appearance in Hole 594, contribute to a recognition that the Subtropical Convergence has been an effective barrier against the southwards penetration of most warmer water planktonic species.Neoacarinina blowi Thompson and Globorotalia crozetensis Thompson, are recorded from the New Zealand area for the first time

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Ultrastructure of Some Planktonic Formainifera

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100050962 ◽

1974 ◽

Vol 32 ◽

pp. 190-191

Author(s):

William H. Zucker

Keyword(s):

Cell Biology ◽

Water Mass ◽

Planktonic Foraminifera ◽

Uranyl Acetate ◽

Ethanol Dehydration ◽

Globigerinoides Ruber ◽

Light Microscope Level ◽

Globigerina Bulloides ◽

Glutaraldehyde Solution ◽

Diamond Knife

Planktonic foraminifera are widely-distributed and abundant zooplankters. They are significant as water mass indicators and provide evidence of paleotemperatures and events which occurred during Pleistocene glaciation. In spite of their ecological and paleological significance, little is known of their cell biology. There are few cytological studies of these organisms at the light microscope level and some recent reports of their ultrastructure.Specimens of Globigerinoides ruber, Globigerina bulloides, Globigerinoides conglobatus and Globigerinita glutinata were collected in Bermuda waters and fixed in a cold cacodylate-buffered 6% glutaraldehyde solution for two hours. They were then rinsed, post-fixed in Palade's fluid, rinsed again and stained with uranyl acetate. This was followed by graded ethanol dehydration, during which they were identified and picked clean of debris. The specimens were finally embedded in Epon 812 by placing each organism in a separate BEEM capsule. After sectioning with a diamond knife, stained sections were viewed in a Philips 200 electron microscope.

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