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Dive into the research topics where Renata Jach is active.

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Featured researches published by Renata Jach.


Acta Palaeontologica Polonica | 2010

A new vent−related foraminifer from the lower Toarcian black claystone of the Tatra Mountains, Poland

Jarosław Tyszka; Renata Jach; Miroslav Bubík

Recurvoides infernus sp. nov., one of the oldest representatives of the superfamily Recurvoidacea (Foraminifera), is described from a thin black claystone overlying the manganese deposits of the Krížna Unit in the Western Tatra Mountains (Poland). These manganese carbonates/silicates were laid down around a shallow-water exhalative submarine hydrothermal vent that was active in the early Toarcian. The microfossils are possibly the first described Jurassic foraminifera associated with hydrothermal vents. The assemblage is characterized by a high abundance and dominance of this new species. The primary lamination of the black claystone, the lack of any macrofauna, and an elevated TOC content point to oxygen-deficient conditions during sedimentation of these deposits. Furthermore, the nearly exclusive occurrence of agglutinated foraminifers suggests a low pH level. It is likely that the foraminifers colonized vent-related bacterial mats which acted as a rich and stable food source. Modern shallow- and deep-water hydrothermal vents may represent similar habitats.


Palaeogeography, Palaeoclimatology, Palaeoecology | 2004

Large microbial-foraminiferal oncoids from condensed Lower–Middle Jurassic deposits: a case study from the Tatra Mountains, Poland

Michał Gradziński; Jarosław Tyszka; Alfred Uchman; Renata Jach


Chemical Geology | 2005

Origin of a Toarcian manganese carbonate/silicate deposit from the Krížna unit, Tatra Mountains, Poland

Renata Jach; Teresa Dudek


Facies | 2005

Storm-dominated deposition of the Lower Jurassic crinoidal limestones in the Krížna unit, Western Tatra Mountains, Poland

Renata Jach


Annales Societatis Geologorum Poloniae | 2007

Bositra limestones - a step towards radiolarites: case study from the Tatra Mountains

Renata Jach


Annales Societatis Geologorum Poloniae | 2014

Integrated stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains

Renata Jach; Nevenka Djerić; Špela Goričan; Daniela Reháková


Geological Quarterly | 2012

Biostratigraphy and palaeoenvironment of the Kimmeridgian-Lower Tithonian pelagic deposits of the Krížna Nappe, Lejowa Valley, Tatra Mts. (southern Poland)

Renata Jach; Daniela Reháková; Alfred Uchman


Lethaia | 2012

The trace fossil Nummipera eocenica from the Tatra Mountains, Poland: morphology and palaeoenvironmental implications

Renata Jach; Elżbieta Machaniec; Alfred Uchman


Annales Societatis Geologorum Poloniae | 2009

Cephalopod fauna and stratigraphy of the Adnet type red deposits of the Krížna unit in the Western Tatra Mountains, Poland

Ryszard Myczyński; Renata Jach


Annales Societatis Geologorum Poloniae | 2003

Glaucony from the condensed Lower-Middle Jurassic deposits of the Križna Unit, Western Tatra Mountains, Poland

Renata Jach; Krzysztof Starzec

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Daniela Reháková

Comenius University in Bratislava

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Jarosław Tyszka

Polish Academy of Sciences

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Helena Hercman

Polish Academy of Sciences

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Grzegorz Worobiec

Polish Academy of Sciences

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