Lihou is a small tidal island located just off the west coast of the island of Guernsey, in the English Channel, between Great Britain and France. Administratively, Lihou forms part of the Parish of St. Peter's in the Bailiwick of Guernsey, and is now owned by the Parliament of Guernsey (officially known as the States of Guernsey), although there have been a number of owners in the past. Since 2006, the island has been jointly managed by the Guernsey Environment Department and the Lihou Charitable Trust. In the past the island was used by locals for the collection of seaweed for use as a fertiliser, but today Lihou is mainly used for tourism, including school trips. Lihou is also an important centre for conservation, forming part of a Ramsar wetland site for the preservation of rare birds and plants as well as historic ruins of a priory and a farmhouse.
Tide times link
http://www.gov.gg/CHttpHandler.ashx?id=85523&p=0
Gneiss is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks. The rock can feel smooth since it has been tempered by the heat it has been subjected to and weathering has little effect on the surface. It is often foliated (composed of layers of sheet-like planar structures), which means it can fracture under weathering, leaving deep fissures in the rock. The foliations are characterized by alternating darker and lighter coloured bands, called gneissic banding". Gneiss appears to be striped in bands, called gneissic banding. The banding is developed under high temperature and pressure conditions. The minerals are arranged into layers which appear to be bands, when the rock is broken and viewed from the side (in cross section). This is because of a different composition of each layer, or band, called compositional banding.
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Sandstone (sometimes known as arenite) is a clastic sedimentary rock composed mainly of sand-sized minerals or rock grains. Most sandstone is composed quartz and/or feldspar because these are the most common minerals in the Earth's crust and the rock feels rough. Like sand, sandstone may be any colour, but the most common colours are brown, yellow, and red. Since sandstone beds often form highly visible cliffs and other topographic features, certain colours of sandstone have been strongly identified with certain regions. Rock formations that are primarily composed of sandstone usually allow percolation of water and other fluids and are porous enough to store large quantities, making them valuable aquifers and petroleum reservoirs. Fine-grained aquifers, such as sandstones, are more apt to filter out pollutants from the surface than are rocks with cracks and crevices, such as limestone or other rocks fractured by seismic activity.
Questions
1) At the GZ there is a large rock in the corner of The Priory, what does the stone feel and look like? You could also look at the reference location to answer this questions.
2) What type of stone is most predominant on the island? (Choose from the two above) The stone at the locations given is the predominant type.
3) What time did you cross and return from the Island and how did you get there?
4) Please upload a photo of yourself or your GPS or something interesting you saw on your visit. (this part is optional)
Please message me the answers, do not include them in your log
Thanks for attempting this cache; I hope you enjoyed your visit to the island today.
There are three other geocaches on the island; two of them are close to the locations given.