ordering 6 points the cross - section below shows rock layers and events: sequence the rocks and events from…

ordering 6 points the cross - section below shows rock layers and events: sequence the rocks and events from oldest (first) to youngest (last). oldest (first) 1 d 2 erosion/unconformity 3 a 4 c 5 b 6 e

ordering 6 points the cross - section below shows rock layers and events: sequence the rocks and events from oldest (first) to youngest (last). oldest (first) 1 d 2 erosion/unconformity 3 a 4 c 5 b 6 e

Answer

Explanation:

Step1: Apply law of superposition

In undisturbed rock - layers, older layers are at the bottom. Layer D is at the bottom - most position among the rock layers, so it is the oldest rock layer.

Step2: Consider erosion and unconformity

Erosion or unconformity occurs after the formation of the underlying rock layers. Since D is the oldest layer and erosion/unconformity occurs on top of it, it is the next event in the sequence.

Step3: Analyze subsequent rock - layer deposition

Layers A, C, B are deposited on top of the eroded surface in sequence according to the law of superposition. So A is older than C and C is older than B among these three layers.

Step4: Identify the youngest feature

The intrusion E cuts through all the other rock layers and the erosion surface. According to the principle of cross - cutting relationships, the feature that cuts through other features is the youngest.

Answer:

  1. D
  2. Erosion/Unconformity
  3. A
  4. C
  5. B
  6. E