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No.79 (2005/3) >

Title :Geology of the Shar and Bulen areas, northwestern Ethiopia: Preliminary result
Authors :Meshesha, Daniel
Negussie, Aweke
Shinjo, Ryuichi
Authors alternative :新城, 竜一
Issue Date :Mar-2005
Abstract :Geological assessment of Shar and Bulen areas, northwestern Ethiopia indicates distinctive rock associations consisting of pelitic and pssamitic sediments that are interbedded with volcanic rocks and linear belt of mafic-ultramafic rocks. These volcano-sedimentary associations signify interchanges of sedimentary process and volcanic activity. Deposition is interpreted to have occurred within a marginal to shallower marine setting. The rocks were subjected to different phases of deformation and were metamorphosed to greenschist facies. Structural investigation indicates that the area underwent at least three phases of deformation (D_1-D_3) with pre-, syn- and post- kinematic granitic intrusions. The volcano-sedimentary association together with mafic-ultramafic rocks can be interpreted as an arc/continent suture zone.
Type Local :紀要論文
ISSN :0286-9640
Publisher :琉球大学理学部
URI :http://hdl.handle.net/20.500.12000/5379
Citation :琉球大学理学部紀要 = Bulletin of the College of Science. University of the Ryukyus no.79 p.27 -42
Appears in Collections:No.79 (2005/3)

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