Geologic Time Assignment

Match the following geologic dating principle to the correct description. A. B. C. D. E. F. G. Principle of Lateral Continuity A. Similar groups of fossils indicate similar geologic ages for the rocks that contain them. If strata in two locations contain the same fossil assemblages, they are approximately the same age. B. In any layered sequence of sedimentary or extrusive igneous rocks that has not been tilted or overturned, the youngest layer is at the top and the oldest layer is at the bottom. C. At the time of deposition, a stratum extends laterally in all directions until it thins out because the sediment supply was exhausted or until it encounters an obstruction D. A rock containing an inclusion (fragment of another rock) must be younger than the inclusion E. Water-laid sediments are deposited in beds (strata) that are horizontal or nearly horizontal and parallel or nearly parallel to Earth's surface F. Any igneous intrusion, fault, or fracture that cuts across another rock body is younger than what it cuts across G. An igneous intrusion 'bakes' (metamorphoses) surrounding rocks. The rock that has been 'baked' is older than the intrusion

C. At the time of deposition, a stratum extends laterally in all directions until it thins out because the sediment supply was exhausted or until it encounters an obstruction

Match the following geologic dating principle to the correct description. A. B. C. D. E. F. G. Principle of Inclusion A. Similar groups of fossils indicate similar geologic ages for the rocks that contain them. If strata in two locations contain the same fossil assemblages, they are approximately the same age. B. In any layered sequence of sedimentary or extrusive igneous rocks that has not been tilted or overturned, the youngest layer is at the top and the oldest layer is at the bottom. C. At the time of deposition, a stratum extends laterally in all directions until it thins out because the sediment supply was exhausted or until it encounters an obstruction D. A rock containing an inclusion (fragment of another rock) must be younger than the inclusion E. Water-laid sediments are deposited in beds (strata) that are horizontal or nearly horizontal and parallel or nearly parallel to Earth's surface F. Any igneous intrusion, fault, or fracture that cuts across another rock body is younger than what it cuts across G. An igneous intrusion 'bakes' (metamorphoses) surrounding rocks. The rock that has been 'baked' is older than the intrusion

D. A rock containing an inclusion (fragment of another rock) must be younger than the inclusion

Match the following geologic dating principle to the correct description. A. B. C. D. E. F. G. Principle of Original Horizontality A. Similar groups of fossils indicate similar geologic ages for the rocks that contain them. If strata in two locations contain the same fossil assemblages, they are approximately the same age. B. In any layered sequence of sedimentary or extrusive igneous rocks that has not been tilted or overturned, the youngest layer is at the top and the oldest layer is at the bottom. C. At the time of deposition, a stratum extends laterally in all directions until it thins out because the sediment supply was exhausted or until it encounters an obstruction D. A rock containing an inclusion (fragment of another rock) must be younger than the inclusion E. Water-laid sediments are deposited in beds (strata) that are horizontal or nearly horizontal and parallel or nearly parallel to Earth's surface F. Any igneous intrusion, fault, or fracture that cuts across another rock body is younger than what it cuts across G. An igneous intrusion 'bakes' (metamorphoses) surrounding rocks. The rock that has been 'baked' is older than the intrusion

E. Water-laid sediments are deposited in beds (strata) that are horizontal or nearly horizontal and parallel or nearly parallel to Earth's surface

Match the following geologic dating principle to the correct description. A. B. C. D. E. F. G. Principle of Cross-Cutting Relationships A. Similar groups of fossils indicate similar geologic ages for the rocks that contain them. If strata in two locations contain the same fossil assemblages, they are approximately the same age. B. In any layered sequence of sedimentary or extrusive igneous rocks that has not been tilted or overturned, the youngest layer is at the top and the oldest layer is at the bottom. C. At the time of deposition, a stratum extends laterally in all directions until it thins out because the sediment supply was exhausted or until it encounters an obstruction D. A rock containing an inclusion (fragment of another rock) must be younger than the inclusion E. Water-laid sediments are deposited in beds (strata) that are horizontal or nearly horizontal and parallel or nearly parallel to Earth's surface F. Any igneous intrusion, fault, or fracture that cuts across another rock body is younger than what it cuts across G. An igneous intrusion 'bakes' (metamorphoses) surrounding rocks. The rock that has been 'baked' is older than the intrusion

F. Any igneous intrusion, fault, or fracture that cuts across another rock body is younger than what it cuts across

Match the following geologic dating principle to the correct description. A. B. C. D. E. F. G. Principle of Baked Contacts A. Similar groups of fossils indicate similar geologic ages for the rocks that contain them. If strata in two locations contain the same fossil assemblages, they are approximately the same age. B. In any layered sequence of sedimentary or extrusive igneous rocks that has not been tilted or overturned, the youngest layer is at the top and the oldest layer is at the bottom. C. At the time of deposition, a stratum extends laterally in all directions until it thins out because the sediment supply was exhausted or until it encounters an obstruction D. A rock containing an inclusion (fragment of another rock) must be younger than the inclusion E. Water-laid sediments are deposited in beds (strata) that are horizontal or nearly horizontal and parallel or nearly parallel to Earth's surface F. Any igneous intrusion, fault, or fracture that cuts across another rock body is younger than what it cuts across G. An igneous intrusion 'bakes' (metamorphoses) surrounding rocks. The rock that has been 'baked' is older than the intrusion

G. An igneous intrusion 'bakes' (metamorphoses) surrounding rocks. The rock that has been 'baked' is older than the intrusion

The oldest geologic unit is a. Layer 1. b. Layer 5. c. Layer 10. d. Layer 8.

a. Layer 1

The description, correlation, and classification of strata (layers) of sedimentary rock is called stratigraphy. a. True b. False

a. True

Which of the following is an absolute age determining method? a. dating minerals using radioactive isotopes b. using the law of superposition c. all of the choices are correct d. using the geologic time scale e. using the law of fossil succession

a. dating materials using radioactive isotopes

If an igneous dike cuts across a sequence of sedimentary beds, then a. the beds must be older. b. the beds and the dike must have formed at the same time. c. the dike must be older. d. their relative ages cannot be determined from the information given.

a. the beds must be older

All geologic processes occur on the same time scale (i.e.all processes take the same amount of time.). a. True b. False

b. False

Based on the figure, what is the age of Layer 7 relative to Layer 3? a. Layer 7 and Layer 3 are the same rock type, so they are the same age. b. Layer 7 is younger than Layer 3. c. Layer 7 is older than Layer 3. d. Their relative ages cannot be determined.

b. Layer 7 is younger than Layer 3

Which of the following could NOT be dated using the carbon-14 dating method? a. human bones b. quartz c. animal bones d. all of the choices are correct e. charcoal f. carbonate shells

b. quartz

A scientist who studies fossils is known as a(n) a. archaeologist. b. mineralogist. c. paleontologist. d. seismologist.

c. paleontologist

Uniformitarianism is succinctly summarized by which phrase? a. The present is the key to the future. b. The future is the key to the present. c. The past is the key to the present. d. The present is the key to the past.

d. The present is the key to the past

In an undisturbed sequence of sedimentary rocks, younger layers overlie older layers, according to the principle of a. original horizontality. b. uniformitarianism. c. original continuity. d. superposition.

d. superposition

By applying Steno's Law of Superposition and Law of Fossil Succession, ________ dates can be obtained. a. radioactive b. ion d. absolute e. isotopic f. relative g. all of the choices are correct

f. relative

This type of dating is the age of one geologic event in relation to another. A. Relative Dating B. Absolute Dating

A. Relative Dating

Match the following geologic dating principle to the correct description. A. B. C. D. E. F. G. Principle of Fossil Assemblages A. Similar groups of fossils indicate similar geologic ages for the rocks that contain them. If strata in two locations contain the same fossil assemblages, they are approximately the same age. B. In any layered sequence of sedimentary or extrusive igneous rocks that has not been tilted or overturned, the youngest layer is at the top and the oldest layer is at the bottom. C. At the time of deposition, a stratum extends laterally in all directions until it thins out because the sediment supply was exhausted or until it encounters an obstruction D. A rock containing an inclusion (fragment of another rock) must be younger than the inclusion E. Water-laid sediments are deposited in beds (strata) that are horizontal or nearly horizontal and parallel or nearly parallel to Earth's surface F. Any igneous intrusion, fault, or fracture that cuts across another rock body is younger than what it cuts across G. An igneous intrusion 'bakes' (metamorphoses) surrounding rocks. The rock that has been 'baked' is older than the intrusion

A. Similar groups of fossils indicate similar geologic ages for the rocks that contain them. If strata in two locations contain the same fossil assemblages, they are approximately the same age.

This type of dating is the number of years that has elapsed from a certain event until now. A. Relative Dating B. Absolute Dating

B. Absolute Dating

Match the following geologic dating principle to the correct description. A. B. C. D. E. F. G. Principle of Superposition A. Similar groups of fossils indicate similar geologic ages for the rocks that contain them. If strata in two locations contain the same fossil assemblages, they are approximately the same age. B. In any layered sequence of sedimentary or extrusive igneous rocks that has not been tilted or overturned, the youngest layer is at the top and the oldest layer is at the bottom. C. At the time of deposition, a stratum extends laterally in all directions until it thins out because the sediment supply was exhausted or until it encounters an obstruction D. A rock containing an inclusion (fragment of another rock) must be younger than the inclusion E. Water-laid sediments are deposited in beds (strata) that are horizontal or nearly horizontal and parallel or nearly parallel to Earth's surface F. Any igneous intrusion, fault, or fracture that cuts across another rock body is younger than what it cuts across G. An igneous intrusion 'bakes' (metamorphoses) surrounding rocks. The rock that has been 'baked' is older than the intrusion

B. In any layered sequence of sedimentary or extrusive igneous rocks that has not been tilted or overturned, the youngest layer is at the top and the oldest layer is at the bottom.