Majken Djurhuus Poulsen

• Ph.D. geology
• Geologist at Geological Survey of Denmark and Greenland

Plumasite-type corundum occurrences in the Nattivit area in South-East Greenland offer a unique opportunity to study corundum formation in-situ where pegmatites intruded into metamorphosed lherzolite and dunite of the Archean-Paleoproterozoic continental crust. The Nattivit area, located in the Isertoq Terrane of North Atlantic Craton, forms part o...

On December 15th 1952, at approximately 14:00 local time a mass of 5.9 × 10⁶ m³ of permafrozen talus deposits failed in a landslide close to the Niiortuut mountain on the south coast of the Nuussuaq peninsula, central West Greenland. Between 1.8 and 4.5 × 10⁶ m³ of the material entered the sea and generated a tsunami that propagated through the Vai...

This study looks upon how different epistemologies reassess knowledges and histories, and how different fields of interest and ways of knowing can look at landscapes in similar ways and intersect as well as reveal fascinating facts about landscapes and place. Likewise, how local knowledges and stories are knowledges of how to produce and reproduce...

Whole-rock geochemistry on pegmatite occurrences in Greenland and their potential for critical raw materials – with a focus on lithium

The geotectonic setting for plumasite-type corundum occurrences is understudied, even though it is of importance for the understanding of trace-element patterns used for fingerprinting of ruby and sapphire. Mineral reactions related to metasomatism caused by pegmatite intrusion into ultramafic rock result in a characteristic trace element signature...

The Tasiilaq region in SE Greenland contains Palaeoproterozoic supracrustal rocks, which record the collision and suturing of the Rae Craton and North Atlantic Craton during the 1.9 Ga Nagssugtoqidian orogeny. The original mineralogy and textures of the supracrustal rocks have been largely overprinted by amphibolite facies metamorphism, obscuring t...

Soapstone was mined and traded by the Palaeo-and Neo-Eskimo cultures (Saqqaq, Dorset, and Thule) as well as the Norse and Moravian cultures living in Greenland through time. We collected soapstone from outcrops around Nuuk, which hold large quantities of Greenland's high-quality soapstone, and analysed their whole-rock geochemistry, Sm-Nd and Rb-Sr...

Metamorphic petrology observations on rubies found in-situ in their host-rock are combined with geochemical measurements and optical microscopy observations on the same rubies, with the aim of connecting the ruby-forming metamorphic reaction to a unique fingerprint for these minerals. The Fiskenæsset complex in Greenland is used as an area of this...

Fedtsten har i tusindvis af år været en vigtig ressource for Grønland: som handelsobjekt, som materiale til brugsgenstande (alt fra køkkenredskaber til lyskilder) og som et symbol på grønlandsk kultur. I de senere år er ressourcen dog trådt lidt i baggrunden. Fedtsten bruges i dag primært som souvenirs. På grund af manglende kendskab til hvor fedts...

Fedtsten har i tusindvis af år været en vigtig ressource for Grønland: som handelsobjekt, som materiale til brugsgenstande (alt fra køkkenredskaber til lyskilder) og som et symbol på grønlandsk kultur. I de senere år er ressourcen dog trådt lidt i baggrunden. Fedtsten bruges i dag primært som souvenirs. På grund af manglende kendskab til hvor fedts...

This study is concerned with ways in which geology and anthropology combined can assist in developing new approaches to understanding places, particularly by paying attention to both written and oral stories. The authors reflect on how different fields of interest and ways of knowing can shed light on at landscapes in similar ways, and how they – w...

In connection with fi eld work in South-East Greenland in 2014, we took the opportunity to examine the geology associated with potentially valuable mineral occurrences found by local rock collectors. Th e initial fi nds were made by local collectors as part of Ujarassiorit, which is an annual mineral hunt competition where anyone in Greenland can s...

The Geological Survey of Denmark and Greenland (GEUS) and the Canada-Nunavut Geoscience Office (CNGO) recently held a workshop in Nuuk, Greenland focused on exchanging information about mineral and petroleum resources and discussing geoscience questions common to both jurisdictions. This workshop included participants from the CNGO, Government of N...

The third Galathea expedition (Galathea 3) left Copenhagen in August 2006 for a circumnavigation of the globe with the aim of conducting more than 70 scientific programmes en route. The first geological programme took place in South Greenland and included sampling of sediment cores and seismic profiling. The aim of the study is to obtain detailed k...