1. Margaret H. Benoit The College of New Jersey
A Geologic Safari of the East African Rift and the Newark Basin: Why these areas are more alike than you know
Margaret H. Benoit
The College of New Jersey

2. East Africa Rift Location of a continental Rift that began spreading
Approximately 20 million
Years ago
USGS

3. Currently, the East African Rift is considered a young continental rift zone
USGS

4. If rifting continues, seafloor spreading will occur
USGS

5. Major fault structures in East Africa
Map from
Ashley et al., 2004

6. The Rift Valley Photo of rift escarpment In Tanzania
Photo of rift escarpment
In Tanzania
Cross section of rift graben structure

7. Faults in East Africa
Photo of Derek Kier taken by Julie Rowland, University of Auckland

8. More Ethiopian Faults Photo by Cindy Ebinger, U. of Rochester

9. East Africa Seismicity
Figure by Andy Nyblade, Penn State

10. Volcanoes in East Africa
Here is a
Map showing
Historically active
Volcanoes in
East Africa
USGS:

11. Volcanoes in Ethiopia Google Earth image

12. Erta Ale - most active volcano in rift
Other volcanoes

13. False color images of topographic measurements taken by the Space Shuttle of volcanoes in Eritrea and Ethiopia

14. Lava at Erte Ale Tom Pfeiffer, Volcano Discovery
Courtesy of Guy de Saint-Cyr, Aventure et Volcans.
ertaale/3306_17s.jpg
ertaale/2612_08s.jpg

15. Fissure Eruptions
Photo Elizabeth Baker, Royal Holloway, University of London

16. Fissures in Ethiopia Photo by Anthony Philpotts

17. Dike in Kenya
Photo by Alex Guth, Michigan Tech.

18. Rift Valley Lakes The rift valley is home to many lakes
SeaWiFS Project, NASA/Goddard Space Flight Center
From Ashley et al., 2004

19. Next: GeoMapApp Activity
Explore feature within East Africa Rift using GeoMapApp and available geologic data
Move to geomapapp.doc