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Ashlay Essay

  • Submitted by: ashlayt
  • on August 19, 2015
  • Category: Miscellaneous
  • Length: 1,489 words

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Below is an essay on "Ashlay" from Anti Essays, your source for research papers, essays, and term paper examples.

Earth Science 11; Geologic Time Unit Review
Multiple Choice

1) An unconformity is a buried ________.
A) fault or fracture with older rocks above and younger rocks below
B) surface of erosion separating younger strata above from older strata below
C) fault or fracture with younger strata above and older strata below
D) surface of erosion with older strata above and younger strata below
Answer:   B

2)

The white arrow in this cross-section points to an unconformity (black line). What kind of unconformity is it?
A) disconformity
B) angular unconformity
C) nonconformity
D) dike
Answer:   B

3) A datable mineral crystal contains 40% parent isotope. How many half-lives have passed since the crystal formed?
A) 1
B) more than 1 but less than 2
C) more than 2 but less than 3
D) more than 3
Answer:   B

4) Which of the following geologic observations would NOT bear directly on working out the sequence of geologic events in an area?
A) inclusions of sandstone in a granite pluton
B) a well-exposed dike of basalt in sandstone
C) an unconformity between a granite and sandstone
D) the feldspar and quartz contents of a granite
Answer:   D

5) The principle of ________ is the concept that ancient life forms evolved in a definite order and therefore their fossils can help determine the geologic ages of strata.
A) superposition
B) cross-cutting relationships
C) fossil succession
D) fossil assemblage
Answer:   C

6) Which of the following is an essential characteristic of an index fossil?
A) The organism lived in a very specific environment or two, such as tropical volcanic islands.
B) The organism lived for a very limited period of geologic time.
C) The fossils of the organism are exceptionally well preserved.
D) The organism lived on the land, not in the ocean.
Answer:   B

7) Using the known rates of radioactive decay to date the crystallization of certain minerals is known as ________ dating.
A) conventional
B) radiometric
C) relative
D) fossil assemblage
Answer:   B

8)

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  • Submitted by: ashlayt
  • on August 19, 2015
  • Category: Miscellaneous
  • Length: 1,489 words
  • Views: 117
  • 1 rating(s)

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