Warren Gorge forms part of the Flinders Ranges.
The Flinders Ranges stretch over 430 km from Port Pirie to Lake Callabonna and are a classic example of a folded mountain range.
Formation of the ranges began about 800 million years ago. An ancient sea covered a large basin for about 300 million years, depositing layers of sediments on the seabed.
About 500 million years ago the basin sediments were folded and faulted to form a large mountain range. The mountains have eroded away but uplift during the last five million years has exposed the folded and faulted rocks to form the rugged scenery we see today.
The sedimentary rocks that are now visible include distinctive intervals of sandstone, mudstone and limestone that once formed the ancient seabed.
To log this earthcache...
To log the cache, please send me a message or email with answers to the following questions:
Near the listed coordinates you will see a prominent, almost vertical, rock wall that faces eastwards.
Q1. Describe the approximate shape, colour and dimensions of the rock face.
Q2. The rock face has a distinctive pattern – describe the pattern.
Q3. What do you think may have caused the pattern on the rock face?
Please feel free to log your visit as soon as you have submitted your answers to me. I will respond confirming permission to log, or asking clarifying questions if I feel that you have not answered the questions correctly. Logs with no answers sent will be deleted. Please do not post your answers or spoiler photographs in your log.
Note: At the time this cache was listed, the Flinders Ranges Council charged a $5 day entry fee per vehicle and $10 per night per vehicle for camping, payable at the honesty box at the entrance to Warren Gorge.