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Dr Liam Herringshaw: An Introduction To Geological Maps.

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Presentation on theme: "Dr Liam Herringshaw: An Introduction To Geological Maps."— Presentation transcript:

1 Dr Liam Herringshaw: lgh865@hotmail.comlgh865@hotmail.com An Introduction To Geological Maps

2 Recommended text Geological Structures and Maps (Lisle) (or Bennison et al. / Barnes & Lisle)

3 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

4 Introduction Maps & Geology Why map geology and how? How to read geological maps?

5 Introduction Scarborough sheet: First impressions?

6 Why map? Ordnance Survey: – military Geological Survey: – economic – scientific

7 What is a geological map? How does it differ from a 'normal' map? – Interpretive, not just descriptive – = Predictive science

8 William 'Strata' Smith Origins

9 Smith & Nephew The Mapping of Yorkshire

10 What to map? Depends on scale and subject – what are you trying to show?

11 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

12 Topography Learn to read the landscape

13 What to map? Superficial: also known as 'Drift' mapping

14 What to map? Bedrock or 'Solid' Geology

15 Next week: Uniformly dipping strata

16 Next week: Uniformly dipping strata Useful tools: Protractor, ruler, pencils, paper

17 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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