Geological study of the Coppermine River Group volcanic rocks, NunavutMarie-Claude Williamson, Rob Rainbird, Elisha Whalen, and Mackenzie LIP project participants Fieldwork logistics – Part 1: Part 1 is planned for the period July 6 to 28, 2026, from a basecamp located 80 km south of Kugluktuk. In addition to 1 GSC research geologist and 3 university students, the team in Part 1 includes 1 Museum Science Advisor and a Wildlife Officer for a total of 6 field personnel. The team will set up one large kitchen tent and a maximum of 6 smaller tents for the field personnel. One portable generator requiring gasoline will be used for power, and one propane tank will be used for the camp stove. It may be possible to set up a small satellite dish, but this request is pending approval from the GSC. For the first two weeks, geological mapping and rock sampling will be carried out on foot by the participants operating from base camp to a maximum distance of 5 kilometers from base camp. All field personnel will use traditional geological tools, such as a digital mapping tablet, rock hammer, compass, camera, hand lens, notebook, and binoculars. If permission is granted, the team could use a small drone for mapping outcrops that are difficult to access but no scientific instruments will be used during fieldwork in Parts 1 and 2. On July 20, there will be a rotation of 3 participants returning to Kugluktuk and 3 others arriving from Kugluktuk for the last week of fieldwork at this location. For two days, July 21 and 22, the team will be transported by helicopter to two areas located about 20 km from the base camp. The pilot will return to Kugluktuk after each day of work with the team. Foot traverses will then resume from July 23 to July 26. Part 1 of the field season ends on July 27 with removal and transport of all field personnel, tents, equipment, and rock samples from the base camp to Kugluktuk.Fieldwork logistics – Part 2: Part 2 is planned for the period July 28 to 31 with activities based out of Cambridge Bay, Victoria Island. Our scientific objective in Part 2 is to travel to an outcrop located near Washburn Lake which was first visited by GSC research geologists in 1994. The team in Part 2 includes a total of 3 field personnel: 2 GSC research staff and Elisha Whelan, resident geologist for the Government of Nunavut. The 2 GSC research scientists have requested accommodation at CHARS for the two days of field activities; Elisha Whalen is a resident of Cambridge Bay. The team will travel to the Washburn dyke by helicopter to identify more rocks with a possible impact origin. The same field equipment used in Part 1 will be used for sampling the outcrops in Part 2 (field tablet, geological hammer, compasses, camera, hand lens, binoculars) but no drone will be used. The data generated during the lifetime of the project and field campaign will be released in one MSc academic thesis, an open access report (GSC open file), and peer-reviewed articles published in scientific journals.