21. The Mudgee district lies across the edge of the geological structure known as the Sydney Basin. 22. The Western Carpathians have a complicated geological structure , that has been formed since the Paleozoic era. 23. Najma oil field in Qayyara subdistrict is in the same geological structure as Qayyara oil field. 24. They are a range of sandstone geological structures that reach to at least 1, 190 metres AHD. 25. The core of this geological structure has been eroded to reveal the older underlying Middle Jurassic mudstones. 26. Studies of the Seattle Fault west of Bremerton have revealed a complexity of geological structure and faulting. 27. The Sishen mine has a geological structure producing a high-grade hematite ore, similar to those at Beeshoek. 28. His most significant contributions to Russia were in his studies of the geological structure of the Kuznetsk Basin. 29. The interior of the cave includes geological structures such as different examples of lava, estalcites and lateral protuberances. 30. Bymarka west of Trondheim also has similar geological structures , both forming part of the early Ordovician Bymarka ophiolite.
