Petrogenesis of the Neoproterozoic Bikilal-Ghimbi gabbro, Western Ethiopia
نویسندگان
چکیده
منابع مشابه
Geology and Mineralization of Bikilal phosphate deposit, Western Ethiopia, implication and outline of gabbro intrusion to East Africa zone
The Bikilal layered gabbro-complex is composed of zones/layers of olivine/ pyroxene gabbro and hornblende gabbro. Within the hornblende gabbro, repeated lens-like thin and elongated bodies of hornblendite are found intimately associated with massive and disseminated ilmenite-magnetite bodies, in places with apatite. Petrological examination of the hornblende gabbro shows 50-55% hornblende, 40-4...
متن کاملgeology and mineralization of bikilal phosphate deposit, western ethiopia, implication and outline of gabbro intrusion to east africa zone
the bikilal layered gabbro-complex is composed of zones/layers of olivine/ pyroxene gabbro and hornblende gabbro. within the hornblende gabbro, repeated lens-like thin and elongated bodies of hornblendite are found intimately associated with massive and disseminated ilmenite-magnetite bodies, in places with apatite. petrological examination of the hornblende gabbro shows 50-55% hornblende, 40-4...
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The Neoproterozoic rocks of the Bir Madi area, south Eastern Desert, comprise a metagabbrodiorite complex (GDC) and a tonalite-granodiorite suite (TGrS). The GDC has a weak tholeiitic to strong calc-alkaline character and is made up of olivine gabbro, hornblende gabbro, diorite and monzodiorite. The olivine gabbro is characterized by abundance of augite and labradorite with pseudomorphic serpen...
متن کاملMedicinal plants used in traditional medicine by Oromo people, Ghimbi District, Southwest Ethiopia
BACKGROUND Ethiopia is one of the six centres of biodiversity in the world with several topographies, climatic conditions and various ethnic cultures. Ethnobotanical study is a real and encourageable in rich biological resource areas for medicinal plant identification, documentation, ranking, conservation and sustainable usages. The purpose of this study was to identify the most effective medic...
متن کاملPetrogenesis of A-type granitoids from the Wallagga area, western Ethiopia: constraints from mineralogy, bulk-rock chemistry, Nd and Sr isotopic compositions
A-type granitoids, either intruded into greenschist facies volcano-sedimentary sequence or emplaced at the contact between lowand high-grade terranes, constitute a significant proportion of the granitoid rocks in the Precambrian of western Ethiopia. These granitoids are characterized by Fe-rich biotite, ferro-hornblende, alkali-amphiboles, and alkali pyroxenes. High total alkalis, high FeOT/MgO...
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ژورنال
عنوان ژورنال: Journal of Mineralogical and Petrological Sciences
سال: 2008
ISSN: 1345-6296,1349-3825
DOI: 10.2465/jmps.070401