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 78 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?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Did you know?

In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Discovering Fossils 20-30 Discovering Fossils 20-30
Discovering Fossils 11-30 Discovering Fossils 11-30
Clastic Sedimentary Rocks Clastic Sedimentary Rocks
Resources from Rocks and Minerals Resources from Rocks and Minerals
Determining the Ages of Rocks Using Fossils Determining the Ages of Rocks Using Fossils
Table - Correlation Analysis Table - Correlation Analysis
Video: Energy Flow - Trophic Levels and Food

For a complete list of videos, visit our video library