Noah’s Flood in the landscape near Perth, WA

posted in: Landscapes | 7
Field guide by Bob Gozzard, Geology and Landforms of the Perth Region.
Field guide
I’m organizing a geological field trip for the Perth region, Western australia, on 17 March 2012 (find details here). This means lots of research but fortunately there is much excellent geological material available from geological organizations and on the web.

This material, including maps, reports, papers and field guides, is a fantastic resource because the exploration geologists have made careful observations and reported thoroughly and accurately.

There are certain clues I look for that are tell tale evidences of Noah’s Flood, and I find it interesting that the geologists regularly identify and describe this evidence. But it does not alert them to Noah’s Flood because they are not looking for Noah’s Flood. It is not part of their search image.

As an example, I picked up a great field guide called “Geology and Landforms of the Perth Region” by Bob Gozzard of the Geological Survey of Western Australia. It has full-colour maps and pictures, plus a detailed description of how to get to each site, what to see there and other interesting information.

Geology of the Walyunga area. The wind gap can be seen in the field in the flat north-south landscape along the fence between the Archean outcrops. (image from Bob Gozzard's field guide.)
Geology of the Walyunga area. The wind gap can be seen in the field in the flat north-south landscape along the fence between the Archaean outcrops. (image from Bob Gozzard's field guide.)
My attention was caught by the site he describes at Walyunga, 40 km north-west of Perth in the Darling Range, because of the heading “A wind gap”. A wind gap is a valley cutting through a range. It has been eroded by a stream which no longer flows through the valley.

Wind gaps and water gaps are classic features produced by the receding waters of Noah’s Flood. They are found all over the world (see Rivers erode through mountains).

Wind gaps and water gaps were cut by large flows of water during the early part of the Recessive stage. In the case of a wind gap, as the floodwaters receded the flow of water reduced until it eventually stopped flowing through the gap.

The east-west access road, Walyunga Road, runs through this wind gap which is cut in Archean granite. The high areas to each side of the gap rise more than 100 metres above the road (see Walyunga Walk #6 for the topography in the area). This is how Bob Gozzard, on page 113, describes the processes that carved the gap.

A valley of this size was obviously cut by a major river, but it is now abandoned and is preserved as a wind gap between the two present-day river systems. The steam occupying this valley, Spring Creek, is clearly an underfit stream, far too small to have eroded such a large area—which was most likely cut by the Sawn River at a time when it was significantly larger than today and westerly flowing. About 50 km west-southwest of Walyunga, in the Quinns rock no, 1 offshore well, there is further evidence for a Swan River of significant size flowing west from Walyunga. Quilty (1974) described the presence of poorly sorted, silty, quartzose sandstones … [which is] unusual in that it appears to be the only example of coarser material found offshore.

In other words, the river once flowed westward carving this gap into the foothills of the Darling Range. Its channel can be identified extending some 20 km offshore. Sediments in this offshore channel are conspicuously coarser than usual.

This vivid description jumps out to me as a description of the receding waters of Noah’s Flood, very late in that event during the Channelized flow phase. Clues such as these point to areas of fruitful research for biblical geology.

7 Responses

  1. JS

    Hello Tas,
    I looked at the Walyunga wind gap on Google Earth using a method I’ve come up with to simulate filled-in contours, and it looks like the wind gap actually is a remnant of a formerly westward flowing channel that is now occupied by Wooloroo Brook to the west of Swan R. and Spring Creek on the east. Using the principle of cross-cutting relationships and the higher elevation of the wind gap, it would appear that the westward-flowing paleochannel was crosscut by the Swan River, which then captured the paleostream’s drainage and turned them into the two tributaries. If you’re interested in seeing a jpg, send me an email, and I’ll send it to you.
    Regards, and thanks for your work.

  2. Lindy T

    Hi Tas – You may be interested in viewing this formation in the local Perth area. People are familiar with the Pinnacles desert (or Nambung National Park near Cervantes a couple of hours drive north of Perth. But there is also a mini Pinnacles formation about one hour south of Perth a few kilometres in from the coast. It’s visible if you get on the train from Mandurah to Perth. It’s between the Mandurah and Warnbro stops.

    Another formation which may interest you is Wave Rock at Hyden in Western Australia. It is about 2 hours east of Perth.

    I’m not sure if either of these formation are indicative of Noah’s flood but they may interest you.

    Evidence for Noah’s flood out of the Perth region…
    Also it’s away from Perth but have you ever seen the Zebra Rock formations in the East Kimberley region of W.A?. They are absolutely stunning and I’m pretty sure they are evidence of Noah’s flood.

    There are also some fantastic gorges e.g. Winjana, Tunnel Creek etc in the Kimberley region

    Shell Beach – not far from Monkey Mia might be evidence of Noah’s flood – curiously a signpost at Shell beach says the shells ahve been drifting in for 4000 years – not 20 billion! There is also some fascinating evidence for Noah’s flood in the formation of the Kalbarri Gorge systems in this region as well – beautiful multilayered rocks.

    We have some photos of some of these mentioned features if you wish to email us.

    Keep up the great work! It’s refreshing to read your opinions and thanks for coming to W.A.
    T. family

    Tas Walker replies: Thanks a lot.

  3. Phil Worts

    I believe the deep Murchison River gorge cross-section thru flood sediments at Kalbarri are worthy of study. Starts from the Darling Fault (Yilgarn Block to east) & steps its way down layers in the gorge (excellent Eurypterid tracks, various “worm” trails (layers of them), escape burrows, etc and also magnificent exposures at the coast (Skolithos, etc). Also Cretaceous chalk layer on nearby hills – usual fossils abundant.
    I have organized a few Creation Safari’s taking in these locations in the 1990’s so know most of the best exposures from Perth to Kalbarri.

    Tas Walker responds: Thanks Phil, I have your notes of some of those field trips. If you send me an image of with a comment I’ll see if I can post it.


    Hello Dr Walker,
    I have a large piece of Stromatolite that I found many years ago in a slate quarry on the Darling Scarp high above the city of Armadale in WA.
    If it is of interest, I can bring it with me on your Perth field excursion in March.
    I am having trouble finding out how to register for the excursion by the way (?)
    Kind Regards,

    Tas Walker replies:
    Hi Rex,
    Yes, I would be interested in seeing that Stromatolite, depending of course on how big it is, and convenient to carry.
    You can access information about the field trip at the CMI website. That page also has a link where you can book on-line.
    God bless,

  5. Phil Worts

    Hello Tas,
    It seems I have left things too late to get a place on your Perth geol field trip this Sat. Great it is fully booked. May be next time. What sites will you be looking at & what are the main Creation or Flood features being highlighted?
    With my part time job with the Dept of Environment & Conservation (Land for Wildlife)doing landholder’s bush & wetland assessments I have come across a few coarse sandstone(now quartzite) remnants draped over laterite caps. Prob regressive stage remnants.
    These are 100’s of kms inland from other similar outcrops.
    Great privilege to wander around recording plants, animals, etc.