Pick a day with good visibility, you’ll be viewing the subjects from a distance and if you can’t see them you can’t answer the questions.
I was on my way to my soon to be daughter-in-law's hen weekend in Schull, I stopped here for the nearby trad and continued walking to the EIRE 28 sign. The features here meant I spent a lot longer than planned, and earthcaches were born
Walk along the path to the posted coords, make your observations at the sea arch and send me the answers to these questions via the message centre or email . Post the required photo in your log to claim your find.
1. Observe the rock formation around the sea arch and the stacks beyond it, would you say this is mainly tilting or folding?
2. After reading the description do you think the rock here is igneous, metamorphic or sedimentary, what makes you think that?
3. Thinking about the sea arch, do you think the shape of it has been influenced by the surrounding folds or tilt?
4. Do you think the stacks were once connected to the headland?
5. Take a photo of you or your caching name with the sea arch in the background. Post this with your log
Folds and Tilts
Folding and tilting in rocks arise due to the curving or bending of Earth’s crust. The rock beds were once layered horizontally, folds and tilting occurs after the deposition of rocks in response to compressional stress caused by tectonic plates colliding
Folds and tilting are common in nature and can be found in any type of rock. They can be very simple, such as a single fold or a slight tilt in a body of rock. In most cases, folds are complex structures that have many curves or connected bends. This is because rocks are usually subjected to repeated compressions and fractures, depending on the rate of deformation. Tilting can go from horizontal to vertical
If any kind of rock, sedimentary, metamorphic, or igneous, is subjected to compressional stress, it will be bent or fold. However, folding appears quite clearly in sedimentary rocks. This is because they consist of layers of different nature and colors, making the folding more apparent.