1. The Ring of Fire and Quakes
Created by Dr. Leslie R. Sautter Project Oceanica, Dept. of Geology, College of Charleston
Earthquake data are from the U.S. Geological Survey. Volcano positions are approximated. Physiographic map of the seafloor and tectonic plate map are both courtesy of TASA Graphic Arts, Inc.

2. SLIDE 1. Physiography of the seafloor.

3. SLIDE 2. Distribution of shallow focus earthquake epicenters.

4. SLIDE 3. Overlay of shallow focus earthquake epicenters on the
seafloor physiography.

5. SLIDE 4 . Distribution of deep focus earthquake epicenters.

6. SLIDE 5 . Overlay of deep focus earthquake epicenters on
seafloor physiography.

7. SLIDE 6. Distribution of shallow and deep focus earthquake epicenters.

8. SLIDE 7. Distribution of recently active volcanoes (approximated).

9. SLIDE 8 . Overlay of recently active volcanoes on seafloor physiography.

10. SLIDE 9. Distribution of shallow focus earthquake epicenters and active volcanoes.

11. SLIDE 10. Distribution of deep focus earthquake epicenters and active volcanoes.

12. SLIDE 11. Distribution of shallow focus earthquake epicenters,
deep focus earthquake epicenters, and active volcanoes.

13. SLIDE 12. Overlay of shallow and deep focus earthquake
epicenters, and volcanoes on seafloor physiography.

14. SLIDE 13. Tectonic plates, showing divergent, convergent and
transform plate boundaries.

15. SLIDE 14. Distribution of shallow focus earthquake epicenters,
deep focus earthquake epicenters, and active volcanoes.