12/03/2018

Science Blog: Paleoproterozoic oroclines in Fennoscandia

Text:
Raimo Lahtinen, Research Professor

Oroclines, or curvatures of previously linear arcs (or belts), are tectonic structures that bridge the manufacture of arcs and formation of stable, equant continental blocks. Oroclines are well documented and spatially distributed on a global scale, and they form curved mountain belts of varying degrees in both young and ancient orogens. Johnston et al. (2013) […]

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11/06/2018

Science Blog: New constraints to the development of the Svecofennian orogeny

Text:
Perttu Mikkola, Geologist

The bedrock of Central Finland has a research history extending well back into the 19th century, and the overall evolution of the area is thus relatively well understood. Nevertheless, new data from previously poorly studied areas or the revisiting of areas studied decades ago bring new pieces to the Paleoproterozoic Svecofennian puzzle. Recently published studies […]

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10/01/2018

Science Blog: Photogrammetry in fracture mapping with the aid of an unmanned aerial vehicle (UAV)

Text:
Nicklas Nordbäck, Senior Specialist
Jussi Mattila, Senior Specialist
Jon Engström, Senior Specialist

The essential principle in photogrammetry is triangulation, a science that dates back to 1480 and to the invention of perspective and projective geometry by Leonardo da Vinci. By capturing photographs from at least two different locations, so-called “lines of sight” can be established from cameras to points on a photographed object. By mathematically intersecting these […]

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09/03/2018

Science Blog: Metamorphic map of Finland

Text:
Pentti Hölttä, Senior Scientist

In the Precambrian bedrock of Finland, almost all rocks are metamorphosed, and most metamorphic rocks have undergone medium- to high-grade metamorphism, in which the original volcanic, sedimentary and igneous rocks have been altered to deformed gneisses that can again be partially melted. Metamorphism is a feature that can easily be mapped, providing essential information on […]

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05/22/2018

Science Blog: GECCO – High-performance geoscientific computing in multi-scale mineral potential studies

Text:
Eevaliisa Laine, Senior Scientist

A central task in mine site evaluation and 3D mineral potential studies is to collect data on multiple spatial scales and subsequently use inverse methods to infer the location and extent of economically interesting mineral deposits. The data sets comprise, for example, airborne and ground geophysical data, drill-hole data, geological maps and cross-sections, drill-core logs […]

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05/16/2018

Science Blog: MPM Online Tool – find ore deposits smartly with geodata

Text:
Vesa Nykänen, Research Professor
Maarit Middleton, Senior Scientist
Niina Ahtonen, Head of the Digital Products and Services Unit
Tero Niiranen, Senior Scientist
Juha Strengell, Systems Specialist
Janne Kallunki, Specialist Planner
Kimmo Korhonen, Geophysicist
Merja Janhila, Geologist
Ilkka Lahti, Geophysicist

Have you ever thought it would be cool to spot the best places for a deposit type of your interest in Lapland? Many people have, especially exploration managers in junior mining companies or anybody involved in mineral exploration. Lapland is one of the most active mineral exploration areas in Europe, not least because of the […]

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04/04/2018

Science Blog: Bedrock – Shattered building material

Text:
Mira Markovaara-Koivisto, Geologist

The building of underground facilities in bedrock is increasing in the modern world. In large cities, underground alternatives are being considered due to the lack of space above ground, to ease traffic and parking in city centres, and to guarantee a stable environment, for instance, for super computers and electrical lines. Bedrock can also be […]

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03/05/2018

Science Blog: Chemistry of urban soils reflects both geology and anthropogenic sources

Text:
Timo Tarvainen, Senior Scientist

Urbanisation is one of the modern world’s megatrends. Currently, urban areas cover just 2.8% of the global land area, but they are home to more than half of the world’s population. In Europe, as much as 70% of the population is urban. At the same time, increasing environmental pollution is another global megatrend. Releases of […]

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02/08/2018

Science Blog: Geodiversity of the Baltic Sea

Text:
Anu Kaskela, Geologist

During recent years, the term ‘geodiversity’ has been used in parallel with biodiversity to advance the integrated management of the environment and to emphasize that ecosystems consists of both biotic and abiotic components. Geodiversity includes the natural range of geological, geomorphological, and soil features and their assemblages, relationships, properties, interpretations, and systems (Gray, 2004). So […]

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01/15/2018

Science Blog: What will happen to a waste-rock dump in hundreds of years? A stochastic multicomponent reactive transport model can support this prediction

Text:
Daniele Pedretti, Research Professor

The problem of mine waste management Mining activities can generate large volumes of waste rocks (Figure 1) that are generally stored in large unsaturated dumps on the land surface at the mine site. Waste rocks are not tailings. Waste rocks comprise the overburden that overlies an ore or mineral body and is displaced during mining […]

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