Building Rock Types in Nottingham City Centre

The purpose of this investigation is to identify and visually examine the various rock-and-roll types used in Nottingham city marrow creates.Table 1. General information Question AnswerBriefly explain why the rock types used in the buildings are given specific, local names (e.g. Ancaster gemstone, Bulwell Stone and Portland Stone are three different types of limestone used in Nottingham buildings). Rock types used in buildings are given the local name of their origin. Rocks of the same type testament have variations depending on their geographical background. Therefore by naming rocks after their origin, it is easy to confirm that they come from the same place and so have little variations.Dolomitic limestone was the most common building stone in Nottingham from Victorian times onwards. Briefly explain what dolomitic limestone is (as distinct from limestone).Dolomitic limestone is limestone that has up to 50% dolomite content. The Kentucky geologic survey describes the stone oft en exhibiting a sugary texture and commonly weathering to a brown colour.Table 2. Nottingham building information & observations Building Feature Notes(1) Arkwright Building show the rock material (including the form of the blocks) for the limestone used in the buildingThe limestone used in the Arkwright Building is Ancaster stone. It is a sedimentary rock with a typical layered look. It is a pale yellow and has a medium grain size. The blocks of limestone are roughly 750mm x 250mm.(2) St Andrews Church Describe the rock material (including the form of the blocks) for the limestone used in the buildingThere are mainly two types of limestone used in the church. The first is called Bulwell stone. It is a coarse dolomitic limestone with a honey-brown or red tint. The blocks of stone are virtually 200mm x 150mm. The other type of limestone is Barnstone. It is a grey, fine grained rock with a rough texture.(4) Newton Building Describe the contrasts in appearance of the limestone and sa ndstone used in the Newton buildingThe limestone (Portland stone) in the newton building is white in colour unlike the sandstones golden colour. The limestone has a smooth texture whereas the sandstone has a rough, starchlike texture. Grain size is generally bigger in sandstone. Limestone blocks also contain shell debris unlike the sandstone.(5) Guildhall Describe the contrasts in the appearance of the sandstone used on the entrance steps to the sandstone used for the main buildingThe sandstone (Coal Measures Sandstone) used on the entrance steps is a bluish grey compared to the red-tinted sandstone ( mollymawk Grit) used on the main building. The Millstone Grit has medium grained rock whereas the Coal Measures Sandstone has a fine grain size and a smoother texture. (37) Express ChambersWhat is the name of the architect who designed this building (and when was the building constructed?) The Watson Fothergill website states the architect who designed the Express Chambers was Watson Fothergill. The construction of the building began in 1875 and was completed in 1876. (30) Nottingham and Notts BankDescribe the rock material (including the form of the blocks) for the larvikite used in the buildingThe Pelham Street frontage is made from Larvikite. It is bluish grey in colour. It has coarse inter-locking grains and a pearly lustre. The sheet used are roughly 1500mm x 1000mm. (29) Nottingham daybook BuildingNot including the flooring, name the different types of rock used to clad the exterior of the ground floor of the buildingThe ground floor faade is clad with three different types of (Igneous) rock. The rotter layer course is a dark grey Gabbro. Next is a thin course of Rapakivi Granite. The main panels are a greenish grey Magmatite. (78) The originator Gala Casino buildingA partially resorbed xenolith locoweed be seen in the right front, grey granite panel. What is a xenolith?The National Geographic states that a xenolith is a piece of rock embedded in a dif ferent type of rock. Xenoliths are usually trapped in cooling magma and so most commonly found in igneous rocks. (68) Enfield ChambersDescribe the rock material (including the form of the blocks) for the limestone used in the exterior of the ground floor of the buildingThe Cross-bedded limestone is a dark yellow colour. The rock consists of fine size grains and small crystals. The blocks of limestone are approximately 1000mm x 450mm and have a smooth texture. (67) PrezzoThe front columns are a porphyritic type of igneous rock. What does porphyritic mean, and whoremonger this feature be seen in the columns?The Geology class website explains that porphyritic means an Igneous rock made up of both large and fine crystals. This texture can be seen in the columns. Larger silver crystals are embedded in the finer black crystals.