The dinocyst record across the Cretaceous/Palaeogene boundary of a bathyal mid-latitude Tethyan setting: Gosau Group, Gams Basin, Austria

Mohamed, Omar; Piller, Werner E.; Egger, H.

doi:10.1016/j.cretres.2011.12.007

Cited by 18 publications

(10 citation statements)

References 42 publications

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“…It contains significantly higher values of Ir, Cr, Co, Ni, MgO, Al O and TiO as the layers below and above. Laho- sections, their lithology and correlation of strata as well as on the vertical and horizontal distribution of dinoflagellate cysts can be found in , Egger and Mohamed (2010), and Mohamed et al (2012Mohamed et al ( , 2013.…”

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confidence: 99%

“…Therefore the palynofacies observations can be used for a detailed paleoenvironmental analyses (Carvalho et al, 2013;Tabără and Slimani, 2017). According to the palynofacies observations by Mohamed (2010) and Mohamed et al (2012) in the Gams Basin, a clear difference exists between the Maastrichtian and Danian. The Cretaceous part is highly dominated by AOM (cluster 3).…”

Section: Model Description and Dinoflagellate Distributionsmentioning

confidence: 99%

“…The cluster analysis yielded six dinoflagellate cyst assemblages in the Gams Basin (Knappengraben and Gamsbach sections), and five dinoflagellate cyst assemblages in the Waidach section (see Fig. 2; Mohamed et al, 2012Mohamed et al, , 2013). …”

Section: Model Description and Dinoflagellate Distributionsmentioning

confidence: 99%

“…Still, for a thorough understanding of dinoflagellate cyst distribution in time and space, additional studies, field examinations, and paleogeographical analyses are needed, especially in the northwestern Tethys. In the light of the previous dinoflagellate cyst data in Egger and Mohamed (2010), and Mohamed et al (2012Mohamed et al ( , 2013, the first model of dinoflagellate cyst distribution of the Cretaceous/Paleogene (K/Pg) boundary succession in the Eastern Alps was constructed herein, aiming to increase the paleogeographic database of dinoflagellate cysts in the Tethys. This model includes palynological data from four sections representing different paleoenvironments.…”

Section: Introductionmentioning

confidence: 99%

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A model of dinoflagellate cyst distribution around the K/Pg boundary and its paleoenvironmental implications (Eastern Alps)

Mohamed¹,

Piller²

2017

AJES

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A new model was developed for the paleogeographic distribution of dinoflagellate cysts across the Cretaceous/Paleogene (K/Pg) boundary. Four sections in the Eastern Alps were studied. The Knappengraben and Gamsbach sections are located in the Gosau Basin of Gams, Austria. They are continuous across the boundary and represent a bathyal environment. The Waidach section north of Salzburg (Austria) contains neritic deposits of the Helvetic unit but shows a hiatus at the boundary. The Goppling section between Teisendorf and Oberteisendorf (Bavaria, Germany) belongs to a turbidite-rich, deep-water system (Ultrahelvetic unit), and is considered to be continuous across the boundary.The occurrence and distribution of dinoflagellate cysts in these sections suggests that Trabeculidinium, Adnatosphaeridium, Spiniferites, Pterodinium, Impagidinium, Achomosphaera and Codoniella are restricted to bathyal environments, whereas Areoligera, Manumiella and Trithyrodinium are restricted to the neritic environment. The abundance of Manumiella and Trithyrodinium indicate a high nutrient supply. Hystrichosphaeridium -dominated assemblages have been recorded in both neritic and bathyal environments. Two Manumiella spikes were recorded only at Waidach and interpreted to reflect slight coolings of oceanic surface waters. In the Danian, acme of Spongodinium delitiense are recorded ~1 m above the K/Pg boundary in the neritic and bathyal environments. These acmes could reflect a slight cooling of surface waters in the earliest Danian.The palynofacies analysis in the Gams Basin reveals a high abundance of amorphous organic matter in the Maastrichtian, and black phytoclasts in the Danian, which indicates intensified terrigenous run-off in the Danian with higher sea-floor oxygenation. In the Waidach section, palynomorphs are much more abundant, indicating a shelf to basin transitional area with dysoxic-anoxic conditions at the sea-floor.

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confidence: 99%

Section: Model Description and Dinoflagellate Distributionsmentioning

confidence: 99%

Section: Model Description and Dinoflagellate Distributionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A model of dinoflagellate cyst distribution around the K/Pg boundary and its paleoenvironmental implications (Eastern Alps)

Mohamed¹,

Piller²

2017

AJES

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“…These deposits were assigned to the Kremna Formation by Oszczypko & Oszczypko-Clowes (2014 Bujak & Mudge 1994, Powel et al 1996, Iakovleva et al 2001, Slimani et al 2012, Soliman 2012, Mohamed et al 2012, 2013, Mohamed & Wagreich 2013, Țabără et al 2017. Representatives of the genera Glaphyrocysta and Areoligera as well as A. homomorphum, and C. diversispinosum are common.…”

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The tectonics and stratigraphy of the transitional zone between the Pieniny Klippen Belt and Magura Nappe (Szczawnica area, Poland)

Jurewicz

Segit

2018

geol

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Abstract:The Pieniny Klippen Belt is a narrow, complex structure stretching along a tectonic boundary between the Central and Outer Carpathians. Its formation involved two main evolutionary stages, the first, related to Late Cretaceous-Paleocene folding and thrusting, and the second, associated with Miocene orogenic events in the Outer Carpathians. Interactions between the Pieniny Klippen Belt and Outer Carpathians during both the sedimentation and deformation stages have resulted in the establishment of a peri-klippen transitional zone (named the Šariš Transitional Zone), in which the tectonic deformation effects gradually decrease towards the north. The stratigraphy and tectonic position of this zone have been controversial for decades. The key stratigraphic problems concern 1) the lithologic identity and position of the Szlachtowa ("black flysch"), Opaleniec and Pieniny formations and 2) the relation of the Jarmuta Formation, associated mainly with the Šariš Transitional Zone, to the Szczawnica and Zarzecze formations of the Magura Nappe. We provide an early Paleogene dinoflagellate cyst stratigraphic record of deposits that, according to some recent reinterpretations, represent the Neogene "Kremna Formation". The legitimacy of new lithostratigraphic assignments of the "Kremna Formation" at Jaworki is put into question upon the basis of the primacy of units introduced for the same strata earlier.

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The Cretaceous–Paleogene (K/Pg) boundary in the Dababiya Borehole, southern Egypt: An organic-walled dinoflagellate cyst approach

Soliman

Slimani

2019

Cretaceous Research

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The dinocyst record across the Cretaceous/Palaeogene boundary of a bathyal mid-latitude Tethyan setting: Gosau Group, Gams Basin, Austria

Cited by 18 publications

References 42 publications

A model of dinoflagellate cyst distribution around the K/Pg boundary and its paleoenvironmental implications (Eastern Alps)

A model of dinoflagellate cyst distribution around the K/Pg boundary and its paleoenvironmental implications (Eastern Alps)

The tectonics and stratigraphy of the transitional zone between the Pieniny Klippen Belt and Magura Nappe (Szczawnica area, Poland)

The Cretaceous–Paleogene (K/Pg) boundary in the Dababiya Borehole, southern Egypt: An organic-walled dinoflagellate cyst approach

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