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| Wittelbee Conservation Park |
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August 29 - September 2nd 2018 |
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A couple of do nothing days in spasmodic showers and a cool
wind. In between showers, about 7 hours to replace broken speedo cable.
The rear axle oil change (limited slip differential catching a bit at low
speed full lock) was a couple of hours and had the desired effect. |
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Friday (31st) we moved a couple of hundred km to Wittelbee
Conservation Park, about 10km south of Ceduna. The roads out of the park
were a bit greasy, but solid. |
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Intermittent showers and sunshine. |
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Back to salt bush. |
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We made a detour to Pildappa Rock. The difference between
granite and rhyolite is "not much".
The wonderful geological description on a sign at the base of the rock
mentions the 5km of rock above the granite extrusion that was later eroded
away.
That weight of rock explains to me the stress relief columnar faults in
the Gawler Ranges. |
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Similar to Wave Rock at Hyden (WA). But cheaper. From one
definition Granite is intrusive (doesn't reach the surface) while Rhyolite
has similar chemistry but is extrusive (reaches the surface) so is more
rapidly cooled.
I remain confused as the labels I have seen applied in some places seem
inconsistent with the descriptions.
The erosion around the sides of this granite dome is apparently due to
soil once resting against the edge changing the erosion. Nothing to do with
wind as I imagined. |
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One side is open to the weather. This side lichen covered. |
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An uneventful drive to Wittelbee where it is also Spring. |
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A small headland, and a collection of cormorants with a few
gulls and turns. |
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The granite next to the sea is obvious. I am standing on
limestone. |
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All around colour (even if it is white). |
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(or green). |
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The sun came out to play the next day. Warm until the wind
arrived after lunch. |
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Just a pleasant place to be. |
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No luck with the fishing. Even with the support of an
incoming tide. Though the gulls that visited for short periods must have
had some expectations. |
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Crystal clear blue water. Only a couple of weeks since we
were viewing the sea at the north of Australia. |
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Another day, another sunset.On Sunday (2nd) evening we
meet in Ceduna the rest of the party for a field trip into the Great
Victoria Desert. |
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On Sunday (2nd) evening we
meet in Ceduna the rest of the party for a field trip into the Great
Victoria Desert. But first visit the cormorants (and others) at the
headland. |
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On the left is granite. On the right is limestone, on top
of granite. I tried digging, but couldn't find a single line where they
are joined. Its probably relatively wide. |
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Now that we know more about "karst formations" everything
we see is "karst". |
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Apart from the flowers that is. |
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And the insects. |
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And even the birds. |
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A few clouds, a calm sea, another perfect day. |
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Thevenard, just south of Ceduna, and really all part of the
same town, is a port. Siloes. |
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An active port. The north west corner of the Eyre
Peninsula. |
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Ceduna is on the main road. A bit more manicured. |
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| Great Victoria Desert - Maralinga Tjarutja |
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September 3 - 5 2018 |
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