1. Relative age:The age of a rock, a fossil or an event compared to the age of another one.
Unconformity:rock layers are missing because they were eroded away.
Erosional Surface: Surface formed from erosion
Subsidence: Gradual caving in or sinking of land
Uplift: Features that build up the land (ex. mountain building)
Emergence&submergence: CROSS OUT
UNIFOMITARIANISM – Processes occurring today occurred in the past and vice versa. This allows us to make inferences about the past.
SUPERPOSITION-in UNDISTURBED STRATA, the oldest layer is on the bottom and each layer on top is progressively younger.
ORIGINAL HORIZONTALITY-rock layers are always deposited in horizontal layers. If the rocks aren’t then a process changed them.

2. L.O: students will sequence rock strata (rock layers) in lab.
Directions: put this rock outcrop in the correct sequence 1st, 2nd, 3rd……

3. 1. Shale deposition

4. 2. limestone deposition

5. 3. Another shale deposition

6. 4. A Fault in the rock strata

7. 5. Igneous intrusion causing contact metamorphism

8. 6. Unconformity (Erosion of shale)

9. 7. sandstone deposition

10. 8,9, 10 &11. five depositions

11. 12. erosion

12. Cross Section 1 (Youngest) 1) Conglomerate deposited
2) Limestone deposited
3)Shale deposited
4)Sandstone deposited
5) Erosion of the surface
6)Faulting
(Oldest)

13. Cross Section 2 (Youngest) Conglomerate deposited Sandstone deposited
Shale is deposited
Igneous intrusion comes through and changes 3rd layer
Erosion – Unconformity
Limestone is deposited
Erosion surface

14. Cross Section 3 (Youngest) Granite is deposited uncofomity
Conglomerate is deposited
Sandstone is deposited
Shale is deposited
Limestone is deposed
Tilting occurs
Unconformity
Erosion surface

15. Cross Section 4 Limestone is deposited Conglomerate is deposited
(Youngest)
Limestone is deposited
Conglomerate is deposited
Sandstone is deposited
Folding occurred caused by igneous intrusion
Unconformity
Shale is deposited
Igneous extrusion which changes layer 1 into granite( came up to the surface)
Erosion surface
(Oldest)