Behind Clematis Ridge the white cliffs of Precipice Sandstone can be seen. These form the inner part of Carnarvon Gorge, the entrance of which lies beyond the edge of the photo to the right. In the distance behind the white cliffs we can see the flat plateau atop the south rim of the outer Carnarvon Gorge. This is an erosional remnant of a thick basalt lava field, known as the Buckland Volcanic Province. This basalt once capped the whole area but is now, along with the landscape, mostly eroded away.
Clematis Ridge is the western limb of an anticline, an inverted U-shaped fold in the sedimentary rocks. It’s part of the Bowen Basin (see geological cross section). The strata in the ridge are called the Clematis Group and they dip at about 25 degrees to the west. Notice that the ridge has been cut in several places. The road into Carnarvon Gorge flows through one of the gaps—a water gap through which Carnarvon Creek also flows.
These gaps that cut across the ridge are evidence that, in the past, there was a much greater depth of water that drained from the gorge. The water level was higher than Clemantis Ridge as it flowed out of the Gorge to the east. Think of how floodwaters can breach an earth dam today. Once the dam has been overtopped, the waters will continue to flow through the breach, eroding it deeper as the water level drops. This illustrates how the water gaps could have formed through Clematis Ridge, cutting across the geological structure of the area.
These water gaps in the Clematis Ridge, especially the one used by Carnarvon Creek, are tell-tale evidence left by the receding waters of Noah’s Flood. They were cut quite late in that event.
Carnarvon Gorge, Australia: monument to Noah’s Flood
Carnarvon Gorge rises above the waters of Noah’s Flood
Rainfall catchment for Carnarvon Gorge is not large enough
Carnarvon Gorge was carved in two stages
Landscape around Carnarvon Gorge was eroded in sheets by retreating floodwaters
Carnarvon Creek flows through a water gap carved during Noah’s Flood
The geological history of Carnarvon Gorge, Queensland, Australia, from a biblical Flood perspective