Active faults in the Kaikoura region include the Hope, Kekerengu, and Fidget Faults, and the newly discovered Jordan Thrust, Fyffe, and Kowhai Faults. Ages of faulted alluvial terraces along the Hope Fault and the Jor ...

The Upper Devonian Fenstermaker Limestone is a thickening-upward sequence of interbedded sandy intrapelsparite and subordinate calcareous siltstone and mudstone which averages 190 ft (58 m) thick in the northern Antelo ...

Castle Rocks is 12 miles east of Mt. Jefferson, in the central Cascades of Oregon. The area contains volcanic rocks ranging from mid-Miocene to Holocene in age. These rocks record alternating periods of tholeiitic and ...