Stratum thickness (Leaving Cert DCG): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is stratum thickness?
What is stratum thickness?
Perpendicular distance between layers
What is the upper surface of a geological layer called?
What is the upper surface of a geological layer called?
Headwall
How does surface distance compare to true thickness on a sloped layer?
How does surface distance compare to true thickness on a sloped layer?
Surface distance is always larger
What are outcrop points?
What are outcrop points?
Where layer intersects ground surface
What vertical interval is typically used for ground contours?
What vertical interval is typically used for ground contours?
10 metres
What does 'strike' refer to in geological terms?
What does 'strike' refer to in geological terms?
Horizontal direction of rock layer
What does 'dip' measure?
What does 'dip' measure?
Angle rock layer tilts from horizontal
How must stratum thickness always be measured?
How must stratum thickness always be measured?
Perpendicular to bedding planes
What do auxiliary views help to show?
What do auxiliary views help to show?
True thickness of inclined strata
What is a common mistake when measuring stratum thickness?
What is a common mistake when measuring stratum thickness?
Measuring vertically or along surface