Question

strata puzzle 2 - order the events from oldest to youngest
most recent - youngest
1
deposition of sandstone.
2
deposition of siltstone 2.
3
deposition of shale.
4
deposition of conglomerate.
5
deposition of siltstone 1.
6
erosion 1 of both the conglomerate layer and the shale layer.
7
folding (bending) of sandstone, siltstone 1, shale, and conglomerate layers. this bending is indicated by the curve of the layers and the uneven amounts of conglomerate at the edges.
8
deposition of limestone.
9
igneous intrusion 1: it cuts across all layers and affects all layers with contact metamorphism.
10
erosion 2 of both the limestone and the igneous intrusion, indicated by the curvy line on top
choices:

Explanation:

Step1: Identify oldest deposition

Oldest layers form first: Deposition of siltstone 1.

Step2: Next sequential deposition

Layer above oldest: Deposition of shale.

Step3: Continue deposition sequence

Next overlying layer: Deposition of conglomerate.

Step4: Post-deposition folding event

Folding affects existing layers: Folding of sandstone, siltstone 1, shale, conglomerate.

Step5: Erosion after folding

Erodes folded top layers: Erosion 1 of conglomerate and shale.

Step6: Deposition after erosion 1

New layer on eroded surface: Deposition of sandstone.

Step7: Next post-erosion deposition

Layer above sandstone: Deposition of siltstone 2.

Step8: Final sedimentary deposition

Top sedimentary layer: Deposition of limestone.

Step9: Cross-cutting igneous intrusion

Cuts all prior layers: Igneous intrusion (cuts all layers).

Step10: Youngest erosion event

Erodes latest layers: Erosion 2 of limestone and intrusion.

Answer:

1. Erosion 2 of both the limestone and the igneous intrusion, indicated by the curvy line on top (Youngest)
2. Igneous intrusion. It cuts across all layers and affects all layers with contact metamorphism.
3. Deposition of limestone.
4. Deposition of siltstone 2.
5. Deposition of sandstone.
6. Erosion 1 of both the conglomerate layer and the shale layer.
7. Folding (bending) of sandstone, siltstone 1, shale, and conglomerate layers. This bending is indicated by the curve of the layers and the uneven amounts of conglomerate at the edges.
8. Deposition of conglomerate.
9. Deposition of shale.
10. Deposition of siltstone 1 (Oldest)