Results 61 to 70 of about 1,147 (200)

Hydrocarbon‐derived thrombolites from the Outer Carpathians (Lower Cretaceous, Poland)

Sedimentology, Volume 71, Issue 7, Page 2183-2209, December 2024.
Abstract Shallow marine thrombolites from a newly discovered Lower Cretaceous cold seep in the Outer Carpathians (Poland) were analysed in order to untangle the complex sedimentological and biogeochemical processes involved in their formation and their diagenetic modifications.
Stefano Giunti, Przemysław Gedl, Artur Kędzior, Leszek Marynowski, Mariusz Paszkowski, Andreas Wetzel, Maciej J. Bojanowski   +6 more
wiley   +1 more source

Ultrastructural Perspectives on the Biology and Taphonomy of Tonian Microfossils From the Draken Formation, Spitsbergen

Geobiology, Volume 22, Issue 6, November/December 2024.
ABSTRACT Silicified peritidal carbonates of the Tonian Draken Formation, Spitsbergen, contain highly diverse and well‐preserved microfossil assemblages dominated by filamentous microbial mats, but also including diverse benthic and/or allochthonous (possibly planktonic) microorganisms. Here, we characterize eight morphospecies in focused ion beam (FIB)
Alexandre Fadel, Kevin Lepot, Sylvain Bernard, Ahmed Addad, Armelle Riboulleau, Andrew H. Knoll   +5 more
wiley   +1 more source

Organic petrology and geochemistry of mudstones from the lower Shahejie Formation in the Tanggu area of eastern China: evidence for the presence of an ancient saline lake

Geologica Acta, 2018
Mudstones in the Sha-3 member of the Shahejie Formation, in the Tanggu area of the Huanghua Depression, have been found to contain analcime and ankerite.
L. LI, G.Q. YAO, J. CAI, Y.H. LIU
doaj  

Acritarch Palynomorph Darkness Index (PDI) as an indicator of thermal maturity in Silurian sections from Saudi Arabia [PDF]

Palynomorph Darkness Index (PDI) measurements on acritarchs from Silurian strata in Saudi Arabia exhibit an irregular but potentially useful relationship to other vitrinite reflectance proxies. Four distinct stages in PDI evolution can be recognized with
Goodhue, R., Vecoli, M., Luo, P., Wellman, C., Clayton, G.   +4 more
core   +1 more source

UPPER DEVONIAN ACRITARCHS AND MIOSPORES FROM THE GEIRUD FORMATION IN CENTRAL ALBORZ RANGE, NORTHERN IRAN [PDF]

Journal of Sciences, Islamic Republic of Iran, 1994
The Geirud Formation consists mainly of clastic sediments which are interbedded with limestone stringers. This rock unit is well-exposed along the Central Alborz Range in northern Iran.
doaj  

Tonian age marker acritarch taxa Hermann from the Mesoproterozoic Chhattisgarh Supergroup, Baradwar sub-basin, central India and its stratigraphic significance

Journal of the Palaeontological Society of India
Compression-preserved acid-resistant organic-walled microfossils (OWM) entombed in fine-grained siliciclastic rocks provide an essential tool for biostratigraphic correlation, especially when alternative methods are scarce.
VEERU KANT SINGH, MUKUND SHARMA
doaj   +1 more source

A Middle Cambrian age for the Ediacara-type fauna from the Booley Bay Formation, County Wexford, Ireland: new acritarch data and their implications

Carnets de Géologie, 2005
Ten years ago a well-preserved Ediacara-type fauna was recorded for the first time in sediments at the type section of the Lower Palaeozoic Booley Bay Formation in County Wexford, Ireland (Crimes et alii, 1995).
Brück Peter, Vanguestaine Michel
doaj  

Late Cambrian acritarch Lusatia: Taxonomy, palaeogeography, and biostratigraphic implications. [PDF]

, 2007
Intraspecific variability of the herein emended diacrodian acritarch Lusatia dendroidea is described based on late Cambrian (Furongian) well preserved material from Spain, the High Arctic of Russia, and the East-European Platform. L. dendroidea, displays
BAGNOLI, GABRIELLA, ALBANI, ROBERTO, RIBECAI C, RAEVSKAYA E.   +3 more
core   +1 more source

Organic walled microfossils in wet peperites from the early Cretaceous Paraná-Etendeka volcanism of Brazil. [PDF]

Sci Rep, 2023
Del Mouro L, Becker-Kerber B, Janasi VA, de Araújo Carvalho M, Waichel BL, Lima EF, Rossetti LMM, Cruz V, Silva MS, Famelli N, Ortega-Hernández J.   +10 more
europepmc   +1 more source

Paleobiology of an Ediacaran acanthomorphic acritarch [PDF]

Goldschmidt2021 abstracts, 2021
Samuel Domino, Corentin Loron, Marie Catherine Sforna, Vincent Calers, Emmanuelle Javaux   +4 more
openaire   +1 more source