Publication Name: The Sedimentary Basins of WA
Authors: Larry Tilbury
Publication Volume: 1
Date Published: July 1994
Number of Pages: 17
Reference Type: Book Section
Abstract:
Several large gas fields have been discovered along the Rankin Trend on the Northwest Shelf. In recent years a further two significant gas discoveries have been made: the Echo/Yodel and the North Rankin West fields.The Echo/Yodel Field occurs in Upper Triassic fluvial sands within a major tilted fault block in the southern part of the Rankin Trend. The North Rankin West Field occurs in Bathonian barrier bar sands within a downfaulted graben adjacent to the North Rankin Field. Similar to other Rankin Trend accumulations, these fields are truncated by a major erosional surface, the Main Unconformity, and are overlain by Cretaceous claystones.