Two Dartmouth researchers have quantified the chemical weathering rates of bedrock at three sites around the world. By concentrating their testing in localized areas and using X-ray fluorescence to measure elements and oxides, they have found that variations in the chemistry of weathered bedrock (clay) do not always follow the patterns of the underlying bedrock.
This study by Earth sciences graduate student Benjamin Burke and Assistant Professor Arjun Heimsath will be presented at The Geological Society of Americas annual meeting, November 2-5 in Seattle, WA. Their research helps predict future soil production and erosion in similar landscapes, and may someday predict areas of mineral-rich soil for agricultural purposes.
Burke and Heimsath are studying the rate of soil production, erosion and mineral weathering on landscapes built on granite. Wind and water physically wear down landscapes, while chemical weathering occurs more slowly as water works into the earth to break down rock into clay and other minerals.
Susan Knapp | Dartmouth College
Wandering greenhouse gas
16.03.2018 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung
Unique Insights into the Antarctic Ice Shelf System
14.03.2018 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung
Animal photoreceptors capture light with photopigments. Researchers from the University of Göttingen have now discovered that these photopigments fulfill an...
On 15 March, the AWI research aeroplane Polar 5 will depart for Greenland. Concentrating on the furthest northeast region of the island, an international team...
The world’s second-largest ice shelf was the destination for a Polarstern expedition that ended in Punta Arenas, Chile on 14th March 2018. Oceanographers from...
At the 2018 ILA Berlin Air Show from April 25–29, the Fraunhofer Institute for Laser Technology ILT is showcasing extreme high-speed Laser Material Deposition (EHLA): A video documents how for metal components that are highly loaded, EHLA has already proved itself as an alternative to hard chrome plating, which is now allowed only under special conditions.
When the EU restricted the use of hexavalent chromium compounds to special applications requiring authorization, the move prompted a rethink in the surface...
At the ILA Berlin, hall 4, booth 202, Fraunhofer FHR will present two radar sensors for navigation support of drones. The sensors are valuable components in the implementation of autonomous flying drones: they function as obstacle detectors to prevent collisions. Radar sensors also operate reliably in restricted visibility, e.g. in foggy or dusty conditions. Due to their ability to measure distances with high precision, the radar sensors can also be used as altimeters when other sources of information such as barometers or GPS are not available or cannot operate optimally.
Drones play an increasingly important role in the area of logistics and services. Well-known logistic companies place great hope in these compact, aerial...
16.03.2018 | Event News
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08.03.2018 | Event News
16.03.2018 | Earth Sciences
16.03.2018 | Physics and Astronomy
16.03.2018 | Life Sciences