2. Gravity and Magnetics

Bouguer Anomaly — Quiz

Test your understanding of bouguer anomaly with 5 practice questions.

Practice Questions

Question 1

Which of the following scenarios would most likely result in a positive Bouguer anomaly?

Question 2

The Bouguer anomaly is calculated using the formula $g_B = g_{obs} - g_{\phi} + g_{FA} - g_{BP} + g_{TC}$. If the observed gravity ($g_{obs}$) is $9.805 \text{ m/s}^2$, the theoretical gravity ($g_{\phi}$) is $9.790 \text{ m/s}^2$, the Free-Air correction ($g_{FA}$) is $0.003 \text{ m/s}^2$, the Bouguer plate correction ($g_{BP}$) is $0.004 \text{ m/s}^2$, and the terrain correction ($g_{TC}$) is $0.001 \text{ m/s}^2$, what is the Bouguer anomaly ($g_B$)?

Question 3

What is the primary factor that causes regional Bouguer anomalies?

Question 4

A Bouguer anomaly map shows a large, circular negative anomaly over a specific area. What geological feature is most likely responsible for this observation?

Question 5

How does the Bouguer anomaly help in understanding isostatic compensation?