Malvinia escutiana, a new biostratigraphically important Oligocene dinoflagellate cyst from the Southern Ocean

Houben, Alexander J. P.; Bijl, Peter K.; Guerstein, G. Raquel; Sluijs, Appy; Brinkhuis, Henk

doi:10.1016/j.revpalbo.2011.03.002

Cited by 34 publications

(44 citation statements)

References 42 publications

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“…A total of 48 samples from the G€ oynük North section and 45 samples from the Okcular section were processed following standard palynological processing techniques of the Laboratory of Palaeobotany and Palynology (Houben et al, 2011). Briefly, approximately 10 g of each sample was crushed, oven dried (60 C), weighted and a known amount (10679, Standard Deviation 5%) of Lycopodium clavatum spores were added.…”

Section: Palynology Sample Preparationmentioning

confidence: 99%

Geochemical and palaeontological characterization of a new K-Pg Boundary locality from the Northern branch of the Neo-Tethys: Mudurnu – Göynük Basin, NW Turkey

Açıkalın¹,

Vellekoop

Ocakoğlu

et al. 2015

Cretaceous Research

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A Cretaceous-Paleogene (K-Pg) succession is studied in detail in the Mudurnu-Göynük basin in northwestern Turkey. To characterize the K-Pg transition in this basin, two stratigraphic sections were measured and sampled at high resolution: the Okçular and the Göynük North sections. These sections were analysed for siderophile trace elements, including Ir and other platinum group elements (PGE: Ru, Rh, Pd, Ir, Pt), bulk stable carbon isotopes, calcareous nannofossils, planktic foraminifera and organic-walled dinoflagellate cysts (dinocysts). In this basin, the upper Maastrichtian consists of monotonous grey mudstones, mostly intercalated with turbidites and the basal Danian is characterised by grey mudstones, that are overlain by a rhythmic alternation of limetones and mudstones. The K-Pg boundary is marked by a thin, reddish ejecta layer, characterized by an enrichment of PGE and an abrupt negative shift in bulk δ13C. This ejecta layer is followed by 15-17cm of thick darker, clayey mudstone, the so-called boundary clay. The upper Maastrichtian to lower Danian interval displays a succession of biostratigraphic events, such as the globally recognized spike of the dinocyst taxon Manumiella druggii in the Maastrichtian, followed by the extinction of Cretaceous planktic foraminifera at the K-Pg boundary, and a subsequent rapid succession of First Occurrences (FOs) of dinocysts, such as Senoniasphaera inornata, Membranilarnacia? tenella and Damassadinium californicum and planktic foraminifera, including Parvularugoglobigerina eugubina and Subbotina triloculinoides in the lower Danian. Overall the sedimentological and palaeontological data suggest that the studied sites in the Mudurnu-Göynük basin were deposited under normal marine conditions, likely in an outer neritic to upper bathyal environment. Our geochemical and biostratigraphic characterization of the K-Pg boundary transition in the Mudurnu-Göynük basin provides a new K-Pg boundary record in the Northern branch of the Neo-Tethys and allows a detailed comparison with K-Pg boundary sections worldwide

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Section: Palynology Sample Preparationmentioning

confidence: 99%

Geochemical and palaeontological characterization of a new K-Pg Boundary locality from the Northern branch of the Neo-Tethys: Mudurnu – Göynük Basin, NW Turkey

Açıkalın¹,

Vellekoop

Ocakoğlu

et al. 2015

Cretaceous Research

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“…Further north in the Southern Ocean, dinocyst records have been generated from ODP Site 1168 (Brinkhuis et al, 2003a) and Deep Sea Drilling Project (DSDP) Site 511 (Goodman and Ford Jr., 1983;Houben et al, 2011). Efforts to accurately calibrate the dinocyst events encountered in these studies to existing timescales were not only hindered by taxonomical challenges, but also by other factors such as a lack of independent age control or relatively short and/or incomplete sedimentary archives.…”

Section: Introductionmentioning

confidence: 99%

Stratigraphic calibration of Oligocene–Miocene organic-walled dinoflagellate cysts from offshore Wilkes Land, East Antarctica, and a zonation proposal

Bijl

Houben

Bruls

et al. 2018

J. Micropalaeontol.

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Abstract. There is growing interest in the scientific community in reconstructing the paleoceanography of the Southern Ocean during the Oligocene-Miocene because these time intervals experienced atmospheric CO 2 concentrations with relevance to our future. However, it has remained notoriously difficult to put the sedimentary archives used in these efforts into a temporal framework. This is at least partially due to the fact that the bioevents recorded in organic-walled dinoflagellate cysts (dinocysts), which often represent the only microfossil group preserved, have not yet been calibrated to the international timescale. Here we present dinocyst ranges from Oligocene-Miocene sediments drilled offshore the Wilkes Land continental margin, East Antarctica (Integrated Ocean Drilling Program (IODP) Hole U1356A). In addition, we apply statistical means to test a priori assumptions about whether the recorded taxa were deposited in situ or were reworked from older strata. Moreover, we describe two new dinocyst species, Selenopemphix brinkhuisii sp. nov. and Lejeunecysta adeliensis sp. nov., which are identified as important markers for regional stratigraphic analysis. Finally, we calibrate all identified dinocyst events to the international timescale using independent age control from calcareous nanoplankton and magnetostratigraphy from IODP Hole U1356A, and we propose a provisional dinoflagellate cyst zonation scheme for the Oligocene-Miocene of the Southern Ocean.

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“…The age of the uppermost part of this unit was interpreted as late Eocene. Our assemblages bear also species recorded at the Site 511 on the Malvinas Plateau (Goodmanand Ford, 1983;Houben et al, 2011). All the units mentioned above have been deposited as the result of the transgressive event that occurred around the EOT.…”

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confidence: 60%

A late eocene-early Oligocene transgressive event in the Golfo San Jorge basin: Palynological results and stratigraphic implications

Paredes

Foix

Guerstein

et al. 2015

Journal of South American Earth Sciences

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A new Cenozoic dataset in the subsurface of the South Flank of the Golfo San Jorge Basin (Santa Cruz province) allowed to identify a non-previously recognized transgressive event of late Eocene to early Oligocene age. Below of a marine succession containing a dinoflagellate cyst assemblage that characterizes the C/G palynological zone of the Chenque Formation (early Miocene), a 80-110 m thick marine succession contains a palynological assemblage integrated by Gelatia inflata, Diphyes colligerum and Reticulatosphaera actinocoronata supporting the occurrence of a marine incursion in the M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT basin during the Eocene-Oligocene transition (EOT). The new lithostratigraphic unit -here defined as El Huemul Formation -covers in sharp contact to the Sarmiento Formation, and become thinner from East to West; the unit has been identified in about 1,800 well logs covering up to 3,500 km 2 , and its subsurface distribution exceed the boundaries of the study area. The El Huemul Formation consists of a thin lag of glauconitic sandstones with finingupward log motif, followed by a mudstone-dominated succession that coarsening-upward to sandstones, evidencing a full T-R cycle. Preservation of the El Huemul Formation in the subsurface of the South Flank has been favored by the reactivation of WNW-ESE late Cretaceous normal faults, and by the generation of N-S striking normal faults of PaleoceneEocene age. Flexural loading associated to igneous intrusions of Paleocene?-middle Eocene age also promoted the increase of subsidence in the South Flank of the basin prior to the transgression.

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Malvinia escutiana, a new biostratigraphically important Oligocene dinoflagellate cyst from the Southern Ocean

Cited by 34 publications

References 42 publications

Geochemical and palaeontological characterization of a new K-Pg Boundary locality from the Northern branch of the Neo-Tethys: Mudurnu – Göynük Basin, NW Turkey

Geochemical and palaeontological characterization of a new K-Pg Boundary locality from the Northern branch of the Neo-Tethys: Mudurnu – Göynük Basin, NW Turkey

Stratigraphic calibration of Oligocene–Miocene organic-walled dinoflagellate cysts from offshore Wilkes Land, East Antarctica, and a zonation proposal

A late eocene-early Oligocene transgressive event in the Golfo San Jorge basin: Palynological results and stratigraphic implications

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