![]() ![]() The stacks are formed when part of a headland is eroded by hydraulic action where the force of the water weakens cracks in the headland causing them to later collapse, forming free standing stacks and even a small island. W: The impressive Donegal sea stacks are a geological landform consisting of a steep and often vertical column or columns of rock in the sea near a coast, normally isolated by erosion Stacks are formed by a natural process of coastal geomorphology where time, wind and water are the only factors involved. Iain has been exploring the coastline from the southwest all the way up to Inishowen in the far north including the islands. According to Annagry based rock climber Iain Miller Donegal has huge potential for this fledgling adventure sport. It does not store any personal data.Climbing Donegal’s Sea Stacks – Donegal’s stunning coastline of beaches and rugged cliffs is now also gaining a reputation among international rock climbers for its impressive sea stacks. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. Waves tend to break earlier before they can erode the base of the cliff. This is because the waves have further to travel in very shallow water as the platform grows. Wave cut platforms have a significant impact on the ability of waves to erode the base of the cliff. The platform typically has a slope of less than 4 degrees, which is often only fully exposed at low tide. As the cliff collapses a layer of flat rock is left behind called a wave cut platform. Eventually, the weight of the unsupported cliff will cause it to collapse. Over time the wave-cut notch will develop into a cave. An example of a wave-cut notch is shown in the video below. Wave action and weathering create a notch at the high water mark. Over time cliffs retreat due to a combination of sub-aerial weathering and coastal erosion. This creates a cove, a circular area of water with a relatively narrow entrance from the sea.Ĭliffs are common features of coastal environments. Sometimes the outer hard rock is punctured, allowing the sea to erode the softer rocks behind. The outer hard rock (for example, granite) provides a protective barrier to erosion of the softer rocks (for example, clays) further inland. These types of coast are known as concordant coastlines. ![]() ![]() Where the coasts has the same type of rock along its length fewer bays and headlands are formed as the rate of erosion tends to be similar. Bays and headlands along a discordant coastline. ![]()
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