Title of article :
Petrologic and geochemical characterization and mineralization of the metavolcanic rocks of the Heib Formation, Kid Metamorphic Complex, Sinai, Egypt
Author/Authors :
Khalifa، نويسنده , , Ibrahim H. and El-Bialy، نويسنده , , Mohammed Z. and Hassan، نويسنده , , Doa’a M.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Pages :
18
From page :
385
To page :
402
Abstract :
Metavolcanic rocks hosting base metal sulphide mineralization, and belonging to the Kid Metamorphic Complex, are exposed in the Samra-Tarr area, Southern Sinai. The rocks consist of slightly metamorphosed varicolored porphyritic lavas of rhyolite-to-andesite composition, and their equivalent pyroclastics. Geochemically, these metavolcanics are classified as high-K calc-alkaline, metaluminous andesites, trachyandesites, dacites, and rhyolites. The geochemical characteristics of these metavolcanics strongly point to their derivation from continental crust in an active continental margin. The sulphide mineralization in these metavolcanics occurs in two major ore zones, and is represented by four distinct styles of mineralization. The mineralization occurs either as low-grade disseminations or as small massive pockets. The associated hydrothermal alterations include carbonatization, silicification, sericitization and argillic alterations. The base metal sulphide mineralization is epigenetic and was formed by hydrothermal solutions associated with subduction-related volcanic activity.
Keywords :
Metavolcanic rocks , sulphides , Sinai , mineralization , Calc-alkaline
Journal title :
Geoscience Frontiers
Serial Year :
2011
Journal title :
Geoscience Frontiers
Record number :
2362317
Link To Document :
بازگشت