The Geology and Geochemistry of the Banded Iron Formation in Chago-Werekalu, Wellega Province
| dc.contributor.advisor | Valera, R. (Prof.) | |
| dc.contributor.author | Getahun, Aberra | |
| dc.date.accessioned | 2022-03-16T07:40:36Z | |
| dc.date.accessioned | 2023-11-18T09:49:22Z | |
| dc.date.available | 2022-03-16T07:40:36Z | |
| dc.date.available | 2023-11-18T09:49:22Z | |
| dc.date.issued | 1985-10 | |
| dc.description.abstract | The r ocks of the stuJied area form nart of the ~ ol lera Birbir group of the upper complex and cons ist of a s eries of metasedimentary and plutonic proterozoic rocks. The l1'inieralo£"ical assemblage indicate th a t the metamorphism is of the rreenshist facies. The variation diagram constructed for the various plutonic rocks strongly suppest comagmatic origin by crystal f ractionation. Ma jor and trace element analyses of reDresentative samples of the Chago iron for mation, t he plutonic an~ YOllnper effusive rocks are present ed. TIle Chago iron formation can be classified as nrecambrian banded iron formation and is in l1'any r espects similar to the oxide facies iron formation of Lake Superior t ype. The Cha go iron formation consists only of iron oxides and mi nor aIT'ount of si l ica with total absence of iron silicate, sulfide and carbon ate minerals. Trace element peochemistry suppests that the iron f ormation was chemically precipitated as oxidate sediments in wh i ch the principal iron mineral, ma gne tite, was formed at low temperature in a shal low near shore environment . | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/30623 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Banded ,Geology ,Geochemistry | en_US |
| dc.title | The Geology and Geochemistry of the Banded Iron Formation in Chago-Werekalu, Wellega Province | en_US |
| dc.type | Thesis | en_US |