80 likes | 212 Vues
Geologic Principles. What geologic principles are shown in this diagram?. Sequences of Events: What is the order of each event shown?. Radiometric Dating. U-Pb decay curve How much of the daughter element is remaining after 4 half lives? What is the age of the sample?.
E N D
Geologic Principles • What geologic principles are shown in this diagram?
Radiometric Dating • U-Pb decay curve • How much of the daughter element is remaining after 4 half lives? • What is the age of the sample?
Cross-Cutting Relationships, Superposition and Correlation • Determining the age of sedimentary strata by correlation
Cross-Cutting Relationships • How old (numerical age) is rock unit A? • How old (numerical age) is rock unit B? • How old (numerical age) is rock unit C?
Note the changes in the time scale as it was revised. What do you think are the reasons for this?