This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: How do geologists do correlation using rocks and fossils? What will be an ideal ... (Read 43 times)

c0205847

  • Hero Member
  • *****
  • Posts: 531
on: Jul 15, 2018
How do geologists do correlation using rocks and fossils? What will be an ideal response?

Question 2

Why is correlation needed to construct a complete geologic history of a region? How does correlation
  work, e.g., in the Colorado Plateau region? What will be an ideal response?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

rachel

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Jul 15, 2018
Answer to Question 1

Rock types can be matched up on the basis of similar rock type and superposition, but correlation of
this type can be done only in a limited area where beds can be traced from site to site. To correlate
over larger areas or rocks of different composition, fossils must be used. Fossils are useful because
many organisms lived for a certain length of time. The overlapping geologic ranges of fossil species
allow definition of time intervals because each species is unique and had a definite duration.



Answer to Question 2

No single location in a region has a geologic record of all events that occurred in its history;
correlation allows geologists to determine the complete geologic history of the region. The entire 2-
billion-year record of the Colorado Plateau is not preserved in a single location due to erosion. By
correlating the uppermost rocks at one location with the lowermost equivalent rocks of another area,
the entire geologic sequence can be put together



c0205847

  • Hero Member
  • *****
  • Posts: 531
Reply #2 on: Jul 15, 2018
Thank you :)


rachel

  • Sr. Member
  • ****
  • Posts: 323
Reply #3 on: Jul 15, 2018
Happy to help you


« previous next »
 

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Plant fossils. Plant fossils.
Discovering Fossils 08-30 Discovering Fossils 08-30
Metamorphic Rocks Metamorphic Rocks
Detrital Sedimentary Rocks Detrital Sedimentary Rocks
Chemical, Biochemical, and Organic Sedimentary Rocks Chemical, Biochemical, and Organic Sedimentary Rocks
Resources from Rocks and Minerals Resources from Rocks and Minerals
Video: Burn Animation

For a complete list of videos, visit our video library