3. What type of rock was the Nuvvuagittuq Greenstone Belt originally made of when it formed at Earth's surface? a) Metamorphic rock b) Sedimentary and igneous rock c) Igneous rock d) Sedimentary rock

The Nuvvuagittuq Greenstone Belt is fascinating because it contains some of the Earth's oldest rocks, which formed around 4.28 billion years ago! Originally, it was composed primarily of volcanic igneous rock, formed from molten material that cooled and solidified. This makes it a significant geological formation for studying the early conditions of our planet. Today, these ancient rocks have undergone metamorphism, transforming under heat and pressure into a complex mix of different rock types. This alteration allows scientists to glean insights into the processes that shaped early Earth and how its crust evolved over time, giving us clues about the planet's geological history!