Thanks S. The seismic structure you show is the Waukarlykarly...

Thanks S. The seismic structure you show is the Waukarlykarly embayment. In the area of those seismic lines, it contains 2.5-4kms thickness of younger Mesozoic sediments (and is prospective for oil).

To the northwest it opens out into the Samphire Graben of the Canning Basin, which is a bit shallower.

To the east of the Waukarlykarly Fault, where the Mesozoic cover is much shallower, is a basement high known as the Anketell Shelf. This is the area where Sipa and Antipa/Rio hold ground over their Obelisk, Magnum, Citadel and other prospects. Here the Mesozoic cover is mercifully only 100m thick.

The granted Rio and Antipa areas just to the west of Sipa's Obelisk ground, are still on the Anketell shelf, although only just. Cover may be a bit thicker there.

Regds.