An earth cache that takes a bit of getting to.
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Please read the types of stone described below and answer the questions to log this find.
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Please message me the answers, do not include them in your log.
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Earth cache lesson
There is only one type of rock here, which one is it?
Limestone: A sedimentary rock consisting mainly of calcium carbonate (CaCO3) grains such as ooids, shell and coral fragments and lime mud. Often highly fossiliferous. Numerous limestone reef knolls occur within this area, in a belt from Clitheroe north-eastwards to Rimington, and between Dunsop Bridge and Slaidburn. The limestone from the knolls is paler in colour than the bedded limestones, and is often fossiliferous, weathering to a pale grey to white colour. This is extensively used in the settlements around the knolls, for example Clitheroe, Worston and Newton. This stone is used to face the Calf’s Head, Worston.( you don't need to go there). The other limestones of the group have seen little use as building stones, having been used only in villages near to the quarries.
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Gritstone is a hard, coarse-grained, siliceous sandstone. This term is especially applied to such sandstone that are quarried for building material. British gritstone was used for millstones to mill flour, to grind wood into pulp for paper and for grindstones to sharpen blades. "Grit" (ground up gritstone) is often applied to sandpaper and is composed of angular sand grains. In rock outcrops it may commonly contain small pebbles. "Millstone Grit" is an informal term for a succession of grit stones which are to be found in the Peak District and Pennines of northern England. These sediments were laid down in the late (upper) Paleozoic era, in the Carboniferous period, in deltaic conditions. The Millstone Grit Group is a formal strati-graphic term for this sequence of rocks. The grit-stone edges of the Peak District and in Lancashire are an important climbing area and the rock is much relished by English climbers, among whom it has almost cult status and is often referred to as "God's own rock".The rough surface provides outstanding friction, enabling climbers to stand on or grip the subtlest of features in the rock.
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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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Now the test
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To claim this cache you need to read the three types of rock above and answer the questions below
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1) Feel the rock and tell me how they feel to touch
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2)From the list above choose which type of rock is this outcrop?
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3) How tall is the rock outcrop?
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If you are able and willing please take a photo and upload to the website.
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.OK so I know the correct spelling is excrescence but I wanted to set up and EC starting with X for you guys who need one.