Rock Pools and Bands of Time
- Posted by Peter MacDonald
- On July 25, 2011
- 0 Comments
- Barrarina Gorge
So called ripple rock on the edge of this rock pool in Arkaroola”s Barrarina Gorge.
As mentioned in the previous post, this is beach sand that’s been turned to stone millions of years ago, then over millions more, the sea floor has been twisted and buckled into the positions found today.
Throughout the gorge there’s ample evidence of another geological activity.
Everywhere there’s clearly defined layers or bands of rock.
The northern part of the Flinders Ranges is quite different in make-up to the rest of the ranges to the south.
Here over a billion years ago were very high mountains where erosion was taking place. The eroded material was laid down on the sea floor and eventually turned to stone.
Today those layers are the band we see here, again subjected to massive pressures on the earth’s surface that formed the new ranges 500 to 700 millions ago.
If you want to see more pictures of Barrarina Gorge head on over to the Overflow section which can be found in the headings along the top of this page.