Abstract
Ambling in the Arctic: The Skaergaard Intrusion
Highlights
W ith a population of only 70,000, and a landmass nine times the size of the UK, Greenland remains relatively untouched by human activity
Victoria Honour relays tales of Arctic foxes, narwhals and the Aurora Borealis during fieldwork mapping of the Skaergaard Intrusion, south-east Greenland ith a population of only 70,000, and a landmass nine times the size of the UK, Greenland remains relatively untouched by human activity
My Ph.D. research addresses the physical behaviour of emulsions — mixtures of immiscible liquids — in porous media
Summary
The Skaergaard Intrusion, on the coast of East Greenland at 68 ̊N, is a 10-kmscale body of basaltic magma. It formed around 55 million years ago when magma, destined to be one of the many large flood basalt flows that erupted during the opening of the Atlantic Ocean, failed to reach the surface. The excellent exposure of this example of extreme basaltic fractionation makes it one of the best places in the world to study crystallisation processes. This natural laboratory was discovered by Lawrence Wager in 1930 during an expedition aimed at mapping out an air route across Greenland. Studies of Skaergaard have helped progress many fundamental ideas in igneous petrology
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