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EnglandGeologyQuick questions
Module 1: Development of practical skills in geology
Quick questions on Dip, strike and true thickness: measuring orientation and calculating bed thickness - OCR A-Level Geology
4short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is calculating true thickness?Show answer
The true thickness of a bed is measured perpendicular to the bedding, not across the ground, so a dipping bed's true thickness is less than its horizontal outcrop width. For a bed measured horizontally across its outcrop (at right angles to the strike) on flat ground:
What is q1?Show answer
Define the strike of a bed. [1 mark]
What is q2?Show answer
A bed dips at and its horizontal outcrop width (perpendicular to strike, flat ground) is . Calculate the true thickness. [2 marks]
What is q3?Show answer
Explain why an apparent dip is always less than the true dip. [2 marks]
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