Test on Classification of Geological Folds
Classification of Geological Folds: A Student's Guide
Test: Geological folds (fold classification)
20 questions
Question 1: A syncline contains older rocks in its core.
A. Yes
B. No
Explanation: A Syncline is a Synform which contains younger rocks in its core.
Question 2: The classification of folds by the size of the interlimb angle specifically differentiates between antiforms and synforms.
A. Yes
B. No
Explanation: The study materials list 'Size of the Interlimb angle' as a feature for fold classification, but they do not provide any information on how it is used to differentiate between specific fold types like antiforms and synforms. The text states that antiforms are folds which close upwards where limbs dip away from the hinge, and synforms are folds which close downwards where limbs dip towards the hinge.
Question 3: Neutral folds are characterized by limbs that dip away from the hinge.
A. Yes
B. No
Explanation: Neutral folds are termed as such because they close sideways. Folds where the limbs dip away from the hinge are antiforms or anticlines.
Question 4: An anticline contains older rocks in its core.
A. Yes
B. No
Explanation: The study materials state that 'An antiform will contain older rocks in its core' and that an antiform is 'given more familiar name (anticline)'.
Question 5: Folds that close sideways are termed neutral folds.
A. Yes
B. No
Explanation: Folds which close sideways are explicitly termed neutral folds in the provided study materials regarding the direction of closing.