Fossilized cell nuclei are not that rare: Review of the histological evidence in the Phanerozoic
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DOI: 10.1016/j.earscirev.2021.103599
Abstract: Abstract The preservation of cell nuclei in deep time is an area of research that is largely unexplored, likely because of the assumption that fine intracellular organelles are too fragile to enter the fossil record.… read more here.
Keywords: nuclei rare; rare review; cell; fossilized cell ... See more keywords
U enrichment and Th/U fractionation in Archean boninites: Implications for paleo-ocean oxygenation and U cycling at juvenile subduction zones
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DOI: 10.1016/j.jseaes.2017.10.009
Abstract: Abstract Phanerozoic boninites record enrichments of U over Th, giving Th/U: 0.5–1.6, relative to intraoceanic island arc tholeiites (IAT) where Th/U averages 2.6. Uranium enrichment is attributed to incorporation of shallow, oxidized fluids, U-rich but… read more here.
Keywords: archean boninites; oxygenation; phanerozoic boninites; volcanic sequences ... See more keywords
Changes in the Virtual Dipole Moment of the Earth’s Magnetic Field in the Phanerozoic
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DOI: 10.1134/s0001437017050162
Abstract: Data on the virtual dipole moment (VDP) is distributed nonuniformly with time, which significantly complicates qualitative and quantitative analysis of its evolution. In addition to the moving average method and median values, for the first… read more here.
Keywords: moment earth; changes virtual; dipole moment; phanerozoic ... See more keywords
A model for the decrease in amplitude of carbon isotope excursions across the Phanerozoic
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DOI: 10.2475/06.2017.01
Abstract: The geological cycling of carbon ties together the ocean-atmosphere carbon pool, Earth's biosphere, and Earth's sedimentary reservoirs. Perturbations to this coupled system are recorded in the carbon-isotopic (δ13C) composition of marine carbonates. Large amplitude δ13C… read more here.
Keywords: isotope excursions; carbon; carbon isotope; model ... See more keywords