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cross sectional views. place the layers and events in an order of time relative

ID: 109871 • Letter: C

Question

cross sectional views.
place the layers and events in an order of time relative to each other using the relative dating principles
begin with the older later and work your way to the youngest layer.
then answer the questions


Events ling fault iking M 13. What type of unconformity is represented by crosion Z? oldest 14. What type of intrusion is H? How ean you tell? 15. How would you describe the clasts B and G inside rock ? Events younges crosion F Mfault H fault G folding C 16. What are the fault types for G and H? oldest 17. Did the folding occur before or after fault G? 5 of 7

Explanation / Answer

According to the time period of older to the younger event, the arrangement of the layers of the first image are as follows:

Answer 13:

Erosion Z is an Angular Unconformity because the rock layers beneath the unconformity surface have an angular characteristic with the rock layers deposited above the unconformity surface.

Answer 14:

Intrusion H is a Dike because it crosscut all the stratigraphically pre-existed layer during the time of intrusion.

Answer 15:

The clasts B and G inside the rock N are Xenoliths because they belong to the surrounding country rock and later enveloped in larger rock body (N) during the period of its intrusion.

According to the time period of older to the younger event, the arrangement of the layers of the second image are as follows:

Answer 16:

Fault G is a Reverse fault because its hanging wall has moved upward with respect to its footwall.

And, fault H is a Normal fault because its hanging wall has moved downward with respect to its footwall.

Answer 17:

The folding occurred before the fault G, that's why the layers on the both side of the fault line G are folded.