Teksti: Pertti Sarala, Research Professor, Docent, Ph.D., EurGeol
Recent methodological development has given new possibilities to determine the chemical and mineralogical composition of sample materials with accuracy and quicker than before. Advanced portable field techniques provide a cost-effective way to analyse several types of samples directly in the field and increase the number of methods to be used in exploration. These methods provide […]
Teksti: Antti Ojala, Senior Scientist Jukka-Pekka Palmu, Senior Researcher
The advent of LiDAR (Light Detection And Ranging) technology has enabled rapid documentation of geological and geomorphological characteristics and allowed significant advances in theories on these formations (e.g. Johnson et al., 2015). Previously detected mega-scale landforms, such as large drumlins and end moraine complexes, show up in LiDAR-based digital elevation models (DEM) in greater detail […]
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 […]
Geologian tutkimuskeskus (GTK) on palveleva osaamiskeskus, joka on geologisten luonnonvarojen ja niiden kestävän käytön eurooppalainen huippuosaaja. Asiakaslähtöinen toimintamme luo ratkaisuja, uutta elinkeinotoimintaa ja kestävää kasvua. GTK on työ- ja elinkeinoministeriön alainen asiantuntijaorganisaatio.