The walls of Geikie Gorge are really interesting. The white stone is limestone sculpted over millions of years by floods. It was part of a reef formed by alguae and lime secreting organisms now extinct. It dates back to the Devonian period.
“The Devonian is a geologic period and system of the Paleozoic Era spanning from the end of the Silurian Period, about 419.2 ± 3.2 Mya (million years ago), to the beginning of the Carboniferous Period, about 358.9 ± 0.4 (ICS, 2004). It is named after Devon, England, where rocks from this period were first studied.” (Wikipedia)
A huge thank you to Ron Tear (rontear) for his User Award for Geikie Gorge #4
Landscape and travel
GEIKIE GORGE NATIONAL PARK
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