Journal
GEOPHYSICAL RESEARCH LETTERS
Volume 40, Issue 14, Pages 3562-3566Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1002/grl.50694
Keywords
mantle transition zone; superplume; eastern Africa; whole-mantle structure; thermal anomaly
Categories
Funding
- National Science Foundation [OISE-0530062, EAR-0440032, EAR-0824781]
Ask authors/readers for more resources
P to S conversions from the 410 and 660 km discontinuities observed in receiver function stacks reveal a mantle transition zone that is similar to 30-40 km thinner than the global average in a region similar to 200-400 km wide extending in a SW-NE direction from central Zambia, across Tanzania and into Kenya. The thinning of the transition zone indicates a similar to 190-300 K thermal anomaly in the same location where seismic tomography models suggest that the lower mantle African superplume structure connects to thermally perturbed upper mantle beneath eastern Africa. This finding provides compelling evidence for the existence of a continuous thermal structure extending from the core-mantle boundary to the surface associated with the African superplume.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available