presentation

The origins of biodiversity: Did changing oxygen levels in the Proterozoic induce the rise of complex life?
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Kaotatud paradiis ja keeruka elu häll: Hapnik ja päristuumsed 2 miljardit aastat tagasi
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Oxygenated oceans persisted after the Lomagundi Event: Evidence from the Zaonega Formation
The Lomagundi-Jatuli Event (LJE; 2.22–2.06 Ga), the longest-lived C isotope excursion in Earth’s history, is commonly viewed as …
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High molybdenum abundance in the ~2 Ga Zaonega Formation: Implications for seawater following the Lomagundi excursion
The Paleoproterozoic era is characterized by fundamental shifts in the redox conditions of Earth’s surface environments. Following the …
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Trace metal enrichment in 1.98 Ga black shales of the Zaonega Formation
The trace metal Molybdenum (Mo) has seen widespread use in estimating ocean redox conditions throughout the rock record, due to its …
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Origin of rod and dumbbell shaped phosphate precipitates in Namibian Shelf sediments
Microbial processes are thought to play an important role in modern marine phosphogenesis. Sulphur bacteria inhabiting modern shelfs …
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Apatitic micronodules in Namibian Shelf sediments: Mineralized microbes or diagenetic precipitates?
Modern phosphogenesis in upwelling shelf areas is thought to be strongly influenced by microbial processes. Sulphur bacteria inhabiting …
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Phosphatised microstructures in ancient and modern phosphorites
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Mikrofossiilid maailma vanimates fosforiitides
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