figure 12.4d principle of original lateral continuity strata (layers) extend laterally until they...
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Figure 12.4d
Principle of Original Lateral Continuity
strata (layers) extend laterally until theythin to nothing (pinch out) at the edgeof the depositional basin
Figure 12.4 f
Principle of Inclusions
any piece of a rock that has becomeincluded in another rock must be olderthan the host rock
Figure 12.4g
Principle of Baked Contactsigneous rocks “bakes” the surrounding rocksand must be younger than the rocks it bakes
Figure 10.4 Lab Manual
Disconformity – sometimes hard to recognize
Figure 10.4 Lab Manual
Angular Unconformity – obvious time break
Figure 12.8a
Siccar Point, Scotland
Figure 10.4 Lab Manual
Nonconformity
Figure 8.5 lab manual
Figure 8.4 lab manual
Figure 8-6
Figure 12.5
Age of Igneous Rocks can be used to bracket theage of sedimentary rocks and deformation
Earliest fossils
First shelled organisms
First fishFirst land plants
First amphibiansFirst Reptiles
Coal forming swampsFormation of Pangea
Extinction event
First mammals, birds, and dinosaurs
Extinction of dinosaurs
Ice Ages