Complex sentence: The largest fault is the Vermilion fault, and it separates the Quetico and Wawa subprovinces with a N40 ° E trend and was caused by the introduction of masses of magma.
Split into simpler sentences: The largest fault is the Vermilion fault separating the Quetico and Wawa subprovinces. It has a N40 ° E trend and was caused by the introduction of masses of magma.