Stratum thickness (Leaving Cert DCG): Flashcards
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Practise the cards
10 cards from this deck
Stratum thickness
Stratum thickness
Perpendicular distance between headwall and footwall
Headwall
Headwall
Upper surface of a geological layer
Footwall
Footwall
Lower surface of a geological layer
True thickness
True thickness
Measured at right angles to bedding planes
Outcrop points
Outcrop points
Where geological layer intersects ground surface
Strike of rock layer
Strike of rock layer
Horizontal direction of the rock layer
Dip of rock layer
Dip of rock layer
Angle at which rock layer tilts from horizontal
Typical vertical interval for ground contours
Typical vertical interval for ground contours
10m
How to measure stratum thickness
How to measure stratum thickness
Perpendicular to bedding planes, not along slopes
Purpose of auxiliary views in stratum thickness
Purpose of auxiliary views in stratum thickness
Show true thickness when stratum is inclined