The Megab - Hawzien area is a part of the Neoproterozoic basement rocks ofrnNorthern Ethiopia. The Northern Ethiopia is one of the regions where the basementrnunits consisting of older, low-grade meta-volcanic rocks known as the Tsaliet Grouprnand younger, low grade meta-sedimentary rocks referred to the Tambien Group.rnThese low-grade meta-volcanic and meta-sedimentary rocks have long beenrnconsidered to be part of the Arabian-Nubian Shield. The study area containsrnmetavolcanic (i.e., meta-acidic) and metavolcanoclastic( i.e., felsic meta-volcanicrnbreccia) rocks which belong to the Tsaliet Group; Phanerozoic formations such asrnEnticho sandstone, Adigrat sandstone and Edaga Arbi Glacials which are part of thernTambien Group; felsic sub intrusive; granite, and phyllite(i.e., spotty micaceous andrnquartzo-feldspathic) rock units. The largest part of the study area is covered by thernMV and MVC rock units followed by the granite rock unit. The phyllite unit of thernstudy area is not part of either the meta-volcanic or the meta-sedimentary units. It isrnrather an intervening zone between these two main units.rnDepending on the field structural data analysis, the rock out crops of the study arearnhas three phases of deformation. These are:- (i) the first or earlier phase ofrndeformation(D1), (ii) the Second phase of deformation(D2), and (iii) the third phasernof deformation(D3). D1 is associated with folding of primary bedding and appearancernof tight to isoclinal minor folds, persistent foliation (S1), and linear fabrics defined byrnplaty minerals. D2 is related to N-S trending upright, open folds and crenulationrnlineations with sub horizontal fold axes without producing a pervasive foliation. D3 isrnrecognized by brittle structures like reverse faults, quartz veins and joints.rnBased on the petrographic study, the out crop units of the study area are dominated byrnindex minerals such as chlorite, albite, epidote, muscovite, biotite, calcite andrnhornblende. These minerals indicate low grade metamorphism and this particularlyrnbelongs to the lower greenschist facies. The time relationship between metamorphismrnand deformation of the rock units of the study area are formed between the tworntectonic events D1and D2 and hence they are called late or inter-tectonic.