Question

1. which type of unconformity shows tilted older layers overlain by flat younger layers?

a. non - conformity
b. disconformity
c. angular unconformity
d. parallel unconformity

1. william smiths principle contribution to stratigraphy was:

a. the theory of uniformitarianism
b. the principle of original horizontality
c. the principle of faunal succession
d. the law of superposition

1. in undisturbed rock sequences, which principle helps determine relative age?

a. cross - cutting relationships
b. superposition
c. original horizontality
d. lateral continuity

1. james huttons concept of \deep time\ suggested that

a. earth was exactly 6,000 years old
b. geological processes required immense periods of time
c. time could be measured using radioactivity
d. the earth formed quickly

Explanation:

1. Angular unconformity is defined as tilted older layers overlain by flat younger layers.
2. William Smith is known for the principle of faunal succession in stratigraphy.
3. In undisturbed rock sequences, the law of superposition helps determine relative age where older layers are at the bottom and younger ones on top.
4. James Hutton's concept of "deep time" proposed that geological processes required immense periods of time.

Answer:

1. C. Angular unconformity
2. C. The principle of faunal succession
3. B. Superposition
4. B. Geological processes required immense periods of time