Dr Liam Herringshaw: An Introduction To Geological Maps.

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Presentation transcript:

Dr Liam Herringshaw: An Introduction To Geological Maps

Aims & Objectives Read, understand (and produce?) geological maps Mapping – how and why? Geology – introduction Mapping geological structures Topography, drift & solid geology Exercises Where Do You Think You Were?

Geological mapping: How and why?

Ordnance Survey William Roy's military survey of Scotland

Triangulation of Britain

Geology

Mappable geological structures 1. Sedimentary deposits/erosion 2. Igneous intrusions 3. Igneous extrusions 4. Deformation (metamorphism)

Deposition/erosion Unconformity

Igneous intrusion Whin Sill, Northumberland

Igneous extrusion Giant's Causeway, Antrim

Deformation / metamorphism

Faulting

The Map That Changed The World William 'Strata' Smith

Smith & Nephew The Mapping of Yorkshire

Map Exercise 1 Identification of rocks and structures

Geological mapping Topography

Geological mapping Drift

Geological mapping Bedrock

Exercise 2 Interpreting simple structures

The Highlands Controversy Assynt

Roderick Impey Murchison

The Highlands Controversy Charles Lapworth

The Highlands Controversy John Horne & Ben Peach

Exercise 3 Interpreting more complex structures

Resources

Where Do You Think You Were? Your own postcode geological map

Rotunda Museum / Geological Society President's Lecture Free entry, Scarborough Library December 5 th 2013, 6.30pm Landslides and subsidence: Engineering geology in an age of austerity