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March 25 @ 4:00 pm - 5:00 pm CDT

Current Research in EEPS: Dr. Claudio Faccenna, University of Texas at Austin

Deep mantle source of intracontinental rivers

The Nile is the longest river on Earth and has persisted for millions of years. It has been suggested that the Nile in its present path is ~6 million years old, whereas others argue that it may have formed much earlier in geological history. Here we present geological evidence and geodynamic model results that suggest that the Nile drainage has been stable for ~30 million years. We suggest that the Nile’s longevity in essentially the same path is sustained by the persistence of a stable topographic gradient, which in turn is controlled by deeper mantle processes. We propose that a large mantle convection cell beneath the Nile region has controlled topography over the last 30 million years, inducing uplift in the Ethiopian–Yemen Dome and subsidence in the Levant Sea and northern Egypt. We conclude that the drainage system of large rivers and their evolution over time can be sustained by a dynamic topographic gradient.

 

Meeting Recording can be found here.

Details

Date:
March 25
Time:
4:00 pm - 5:00 pm CDT
Event Categories:
,

Venue

Dept. Earth Science, Rice University, 6100 Main Street
Houston, TX 77005 United States
+ Google Map
Phone:
7133484880

Details

Date:
March 25
Time:
4:00 pm - 5:00 pm CDT
Event Categories:
,

Venue

Dept. Earth Science, Rice University, 6100 Main Street
Houston, TX 77005 United States
+ Google Map
Phone:
7133484880

For outside visitors, the best way to get to our department is to come in on Rice Blvd and turn left into entrance 20 (intersection of Rice and Kent St.). At the stop sign, you will see a visitor parking lot on your right.  From there, walk east to the department.  The google map below shows exactly where our building is.