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16391333
Early Military Geology (Structures)
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geology
Mapa Mental por
Jordan Green
, atualizado more than 1 year ago
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Criado por
Jordan Green
quase 6 anos atrás
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Resumo de Recurso
Early Military Geology (Structures)
5 Main Warfare Categories
Tactical & Strategic terrain analysis
Fortifications and Tunnelling
Resource Aquisition
Defence installations
Field Construction & logistics
Fortification Construction
Reasons
Strategic Purpose
Control/protect borders
Protect comms. eg- Rivers
Dominate Region
Use as an army base
Defensibility
Enhancing Natural obsticles
Security
No higher ground & good visibility
Accessibility
Escape Route
Onsite water supply (wells)
Available construction materials
Firm Foundations
Well drained
Ideal site:
Isolated Rock Hillock
100-300m diameter
Along navigable harbour
-Igneous intrusion, resistant outcrop strata, lithological changes, structural fearure (fold/fault), erosion can enhance the afformentioned
UK Castles
Scottish Castles
Edinburgh
Igneous Strata
Carboniferous Volcanic plug, soft materials surrounding
Accentuated by glacial erosion leaving sloping tail
27.4m deep well
David's tower collapsed into well causing a surrender
Dunbar
Stirling
Great Whin Sill
Permo-Carboniferous quartz dolerite
Bamburgh
high sill exposure into sediments
Fell to Yorkists due to gunpowder
Dunstanburgh
built on prominent headland
Sill intruding sediments
Fault weakness forms harbour
English Castles
Beeston
built on triassic sandstone-
150m above cheshire plane
124m deep well
Royalists captured scaling crag at night
harlech
built on an anticline known as the harlech dome
Caledonian Orogeny
Greywackes
Area where the castle is built is free of boulder clay
Windsor
built on Upper chalk anticline
Surrounded by london clay
Thames erosion caused castle to be 30m high
3 wells 50m deep
Corfe
Chalk monocline
River N, W & S
Summary
Took advantage of local geology/topography
Engineering extending natural features
used access & comm routes effectively
reliable water supplies
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