Much of our knowledge about the Earth’s crust and mantle geodynamics is based on the study of mineral species and associated textures. Crystal abundances, chemistry, sizes, shapes, and spatial orientations represent the specific paragenesis of magmas during transport in the crust, whereas metamorphic minerals are key to investigating the mountain-building orogenic process. The vast majority […]
A new study shows that hypoxia, i.e. low oxygen conditions, in European lakes started in 1850, becoming more widespread after 1900, long before the use of chemical fertilizers and climate change. A Canadian and European research team has identified urban expansion as the reason for the low amounts of bioavailable oxygen in numerous European lakes […]
Arsenic (As) is a ubiquitous metalloid that is found in low concentrations in the atmosphere, in aquatic environments, in soils and sediments, and in organisms. Its presence in the environment can be due to natural processes, such as weathering, biological, and volcanic activity, or anthropogenic activities such as mining. As is problematic because of its […]
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