Geophysical Investigation of the Crustal Structure Beneath Metehara, Main Ethiopian Rift.
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Date
2010-06
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Addis Ababa University
Abstract
Analysis of the gravity data, with the help of the seismic refraction results (G.D.
Mackenzile, H .Thybo and P .K .H .Maguire 2005) and Euler deaconvolution results also
produced to simplify the modeling process of the study region and it was done to study
the crurtal thickness variation under the subsurface layers of Metehara.
Which is located 39° 301 48.34011 to 40° 591 27.60011 E longitude and 8° 481 15.12011 to
9° 28141.26811 N latitude as shown in Fig. I. I.The Bouguer gravity anomaly which shows
the area of study relatively higher value with a strongly denser contour at the lower
comer of S-E of the anomaly map.
The Gravity modeling constrained with seismic refraction and Euler deconvelutivn result,
indicates a crurtal thickness of about 34.8 and 36.6km under selected profiles AB and
MN respectively. The model also shows two highest dense bodies as mafic intrusions
over profile AB.
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Geophysical Investigation