Essays about: "ordovicium"
Showing result 1 - 5 of 24 essays containing the word ordovicium.
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1. Lejarfjället Garnet(?) Peridotite – Origin and Petrological Characterization of Symplectitic Aggregates in Ultramafic Rocks
University essay from Uppsala universitet/Mineralogi, petrologi och tektonikAbstract : Ultramafic rocks are abundant in the Earth’s mantle but rare on the surface. Since no in-situ samples from the mantle can be collected, mantle rocks provide knowledge of mechanisms operating in the mantle and large-scale processes that brought them up to the surface. READ MORE
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2. Estimating the Early Evolution of Brachiopods Using an Integrated Approach Combining Genomics and Fossils
University essay from Uppsala universitet/PaleobiologiAbstract : The Brachiopoda, a major group of the Lophotrochozoa, experienced a rapid early evolutionary diversification during the well-known Cambrian explosion and subsequently dominated the Palaeozoic benthos with its diversity and abundance. Even though the phylogeny of the Lophotrochozoa is still hotly debated, it is now known that the Brachiopoda are a monophyletic grouping. READ MORE
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3. Stratigraphy and pyrite geochemistry of the Lower–Upper Ordovician in the Lerhamn and Fågelsång-3 drill cores, Scania, Sweden
University essay from Lunds universitet/Geologiska institutionenAbstract : Arsenik är ett mycket giftigt ämne som finns i berg, mark och grundvatten, och är känt för att orsaka allvarliga hälsoeffekter. Neurologiska skador hos människan inträffar vid koncentrationer så låga som 100 μg/L, medan 1–3 mg/kg kroppsvikt As är en dödlig dos. READ MORE
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4. A geophysical survey (TEM; ERT) of the Punata alluvial fan, Bolivia
University essay from Lunds universitet/Geologiska institutionenAbstract : The Punata alluvial fan, situated in central Bolivia (Valle Alto) between the Altiplano and the lowlands, is an important aquifer for the local rural population. Due to rapid development and population growth in the area, the demand for fresh water has increased in recent year. READ MORE
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5. The Metamorphic History of the Helags Mountain Area, Scandinavian Caledonides
University essay from Uppsala universitet/Institutionen för geovetenskaperAbstract : The Scandinavian Caledonides formed as a result of collision between the continents Baltica and Laurentia, in Silurian and Early Devonian time. The evolution of the orogen has been a topic of research since before the turn of the last century. READ MORE