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A comparative study of five volcanic-hosted sulfide mineralizations in the Arabian shield
العناوين الأخرى
دراسة مقارنة لخمسة مواقع تمعدن كبريتيدية في الصخور البركانية بالدرع العربي
المصدر
Journal of King Abdulaziz University : Earth Sciences
العدد
المجلد 5، العدد 1 (31 ديسمبر/كانون الأول 1992)، ص ص. 1-33، 33ص.
الناشر
جامعة الملك عبد العزيز مركز النشر العلمي
تاريخ النشر
1992-12-31
دولة النشر
السعودية
عدد الصفحات
33
التخصصات الرئيسية
الملخص EN
Investigation of five volcanogenic base melai sulfide occurrences in the Arabian Shield (Ash Shizm.
Umm Ad Damar, As-Safra, Al , Musayna’ah, and Umm Ash Shalahib) showed that they are located within Hulayfah calc-alkaline volcanic rocks or its equivalents.
The investigations included field, petrographic.
mineralogical and chemical studies.
Felsic, calc-alkaline rock assemblages host these occurrences, with a predominance of rhyolitic rocks and some andesites.
Basalt occurs only in the vicinity of the Ash Shizm mineralization.
These rocks were regionally metamorphosed to low greensehist facies grade.
Deformation and contact metasomatism affected parts of these occurrences producing foliation and local skarn development.
The intensity of mctainorphism and deformation varies between localities.
Later episodes of hydrothermal activity overprinted zones of mineralizations producing serialization, chloritization and silicification.
Geotectonically, these mineral occurrences were formed in different settings.
Ash Shizm bimodal volcanics were probably deposited in an exten-sional regime in a back arc basin.
Umm Ad-Damar, As Safra and AI Musayna’ah calc-alkaline volcanics are interpreted as formed within an island arc environment, while Umm Ash Shalahib volcanics could be considered similar to Andean type deposits related to an active continental margin environment.
Ore microscopic investigations of the mineral assemblages in the five occurrences indicated primary ores that have been coarsened and deformed to variable degrees giving the ores their characteristic brecciated nature reflected in the associated pyrite and other metamorphic texture present.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
al-Shanti, Ahmad Mahmud& al-Mahdi, R. Umar& Hasan, Mamduh Abd al-Ghafur& Husayn, Abd al-Aziz. 1992. A comparative study of five volcanic-hosted sulfide mineralizations in the Arabian shield. Journal of King Abdulaziz University : Earth Sciences،Vol. 5, no. 1, pp.1-33.
https://search.emarefa.net/detail/BIM-398485
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
al-Mahdi, R. Umar…[et al.]. A comparative study of five volcanic-hosted sulfide mineralizations in the Arabian shield. Journal of King Abdulaziz University : Earth Sciences Vol. 5, no. 1 (1992), pp.1-33.
https://search.emarefa.net/detail/BIM-398485
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
al-Shanti, Ahmad Mahmud& al-Mahdi, R. Umar& Hasan, Mamduh Abd al-Ghafur& Husayn, Abd al-Aziz. A comparative study of five volcanic-hosted sulfide mineralizations in the Arabian shield. Journal of King Abdulaziz University : Earth Sciences. 1992. Vol. 5, no. 1, pp.1-33.
https://search.emarefa.net/detail/BIM-398485
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references : p. 30-31
رقم السجل
BIM-398485
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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