Complex sentence: The Lhasa terrane is a terrane, or fragment of crustal material, broken off from the Australian Plate and sutured to the Eurasian Plate during the Cretaceous forming present-day southern Tibet.
Split into simpler sentences: The Lhasa terrane is a terrane, or fragment of crustal material, broken off from the Australian Plate and sutured to the Eurasian Plate. It collided with Eurasia during the Cretaceous forming present-day southern Tibet.