Complex sentence: Near Nordvik there is a paleozoic salt dome known as Tus-Takh on Poluostrov Uryung where it was suspected that the ground underneath would probably yield oil and gas.
Split into simpler sentences: Near Nordvik there is a paleozoic salt dome known as Tus-Takh on Poluostrov Uryung. It was suspected that the ground underneath would probably yield oil and gas.