Results 71 to 80 of about 21,253 (209)
Testing the impact of diagenesis on the delta O-18 and delta C-13 of benthic foraminiferal calcite from a sediment burial depth transect in the equatorial Pacific [PDF]
, 2013 Stable oxygen and carbon isotope (δ18O and δ13C) values measured in foraminiferal calcite are one of the primary tools used in paleoceanography. Diagenetic recrystallisation of foraminiferal calcite can act to reset primary isotopic values but its ...
Edgar, Kirsty M. +2 more
core +4 more sources
Sedimentology, EarlyView.ABSTRACT Understanding the biotic and abiotic influences on the deposition and diagenesis of recent microbial carbonates is crucial for addressing the environmental and ecological significance of ancient organosedimentary structures. This study investigates these factors and their expression in the microstructure of Holocene tufa thrombolites from a ...
Paulo Quezada +10 more
wiley +1 more source
Geologos, 2016 Palaeontological data on the Caucasus are highly important for large-scale stratigraphical and palaeobiogeographical assessment of the northern Tethyan margin, but this information is often scarce and not available in English.
Dzyuba Oksana S. +4 more
doaj +1 more source
Rapid Communications in Mass Spectrometry, Volume 40, Issue 7, 15 April 2026.ABSTRACT Rationale Distribution patterns of foraminifera are controlled by environmental parameters such as temperature, salinity, and nutrient concentrations in each water mass. Since trace elements to Ca ratios of marine microfossil calcite test of foraminifera record environmental and ecological habitat information, we used femtosecond (fs) LA‐ICP ...
Toshihiro Yoshimura +7 more
wiley +1 more source
The last common bilaterian ancestor [PDF]
, 2002 Many regulatory genes appear to be utilized in at least superficially similar ways in the development of particular body parts in Drosophila and in chordates.
Davidson, Eric H., Erwin, Douglas H.
core
Lower Glacial Oxygen in the Eastern Equatorial Pacific Concentrated in the Deep Sea
Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.Abstract Oxygen in the global oceans has declined since the 1960s, including in the Eastern Equatorial Pacific (EEP). Reconstructions of EEP glacial oxygenation help advance understanding of current and projected ocean deoxygenation. Previous estimates of the glacial oxygen deficient zones (ODZs) in the upper EEP are poorly constrained. Here we include
Wanyi Lu +4 more
wiley +1 more source
Pre-Cambrian to Palaeozoic Palaeopalynology and Palaeobotany
Carnets de Géologie, 2005 A set of 14 abstracts and short papers (extended abstracts) of presentations given at a meeting organized by the NFSR Working Group, "Micropaléontologie végétale et Palynologie (MVP)", held on May 11, 2005 at the University of Liège, Belgium.
Steemans Philippe, Javaux Emmanuelle
doaj
Machine Learning and Knowledge ExtractionAlthough the manual classification of microfossils is possible, it can become burdensome. Machine learning offers an alternative that allows for automatic classification.
Jacob Bahn +2 more
doaj +1 more source
ADMorph: A 3D Digital Microfossil Morphology Dataset for Deep Learning
IEEE Access, 2020 Microfossils, tiny fossils whose study requires the use of a microscope, have been widely applied in many fields of earth, life, and environmental sciences.
Yemao Hou +6 more
doaj +1 more source