Complex sentence: Superior Belt was formed 1,884 to 1,864 million years ago when the Superior craton was surrounded by mountain building processes, including the Trans-Hudson, New Quebec and Penokean orogenies.
Split into simpler sentences: Superior Belt was formed 1,884 to 1,864 million years ago when the Superior craton was surrounded by mountain building processes. This included the Trans-Hudson, New Quebec and Penokean orogenies.