The Archean Eon (4–2.5 billion years ago) is one of the last great frontiers in our knowledge of the Earth. Plate tectonics is considered to have initiated during this time period, and large volumes of the continental crust formed, but fundamental questions remain regarding the timing, mechanisms and drivers of these transitions.
Last year I travelled out to Ethiopia for fieldwork twice, quite a feat considering it had taken two years of broken limbs and civil unrest causing setbacks. Avoiding the rains and unseasonably hot conditions of the summer (although I didn’t quite manage to avoid the heatstroke) I visited the Butajira volcanic field in April and Fantale volcano in November.
Skaergaard is a classic example of a layered intrusion. It is a wonderful natural laboratory for geologists and highly photogenic, with its striking igneous layering. There is near 100% surface exposure as not much grows there; an advantage of its location at 68°N. We have just returned from a six week expedition, studying this fascinating intrusion.
In July 2017, I found myself on my first non-compulsory fieldtrip as an undergraduate, in a group of 5 with two academic staff members and two PhD students heading to the Isle of Rum in the Scottish Inner Hebrides. The trip had been planned initially for my Masters project, but with Rum such a famous geological locality, everyone had work they wanted to do there.