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Dr Liam Herringshaw: lgh865@hotmail.comlgh865@hotmail.com An Introduction To Geological Maps
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Recommended text Geological Structures and Maps (Lisle) (or Bennison et al. / Barnes & Lisle)
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Course structure 1. Introduction 2. Uniformly dipping strata 3. Folded strata 4. Faults 5. Unconformities 6. Igneous Rocks 7. Metamorphic cleavage 8. Maps in 4D
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Introduction Maps & Geology Why map geology and how? How to read geological maps?
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Introduction Scarborough sheet: First impressions?
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Why map? Ordnance Survey: – military Geological Survey: – economic – scientific
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What is a geological map? How does it differ from a 'normal' map? – Interpretive, not just descriptive – = Predictive science
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William 'Strata' Smith Origins
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Smith & Nephew The Mapping of Yorkshire
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What to map? Depends on scale and subject – what are you trying to show?
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What to map? What units are mappable? 1:1000 scale 1 mm on map = 1 m wide 1:250,000 scale 1 mm on map = 250 m wide Observed vs inferred features
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Topography Learn to read the landscape
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What to map? Superficial: also known as 'Drift' mapping
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What to map? Bedrock or 'Solid' Geology
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Next week: Uniformly dipping strata
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Next week: Uniformly dipping strata Useful tools: Protractor, ruler, pencils, paper
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Resources (www.fossilhub.org)www.fossilhub.org Geology of Britain Viewer: http://www.bgs.ac.uk/discoveringGeology/geologyOfBritain/viewer.html iGeology: http://www.bgs.ac.uk/igeology/ Vale of York bedrock/superficial maps: Link to paper Maps Before Maps: http://www.retronaut.com/2012/10/maps-before-maps/
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