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Document Details
Document Type
:
Article In Journal
Document Title
:
UTILIZATION OF REMOTE SENSING TECHNIQUES FOR MAPPING THE LISTWAENITE ASSOCIATED With JABAL AL-WASK OpHILITE COMPLEX, NORTHWESTERNSAUDIARABIA
استغلالها تقنيات الاستشعار عن بعد لرسم خرائط WAENITE القائمة المقترنة مع OpHILITE جبل مجمع AL - WASK، شمال غرب المملكة العربية السعودية
Subject
:
UTILIZATION OF REMOTE SENSING TECHNIQUES FOR MAPPING THE LISTWAENITE ASSOCIATED With JABAL AL-WASK OpHILITE COMPLEX, NORTHWESTERNSAUDIARABIA
Document Language
:
Arabic
Abstract
:
Jabal AI-Wask ophiolite complex is the largest ophiolitic ultramafic-mafic rock association in the Arabian Shield (50 X 25 Km) which has been tectonically emplaced over the volcano-sedimentary rocks of the Farri Group and overlain unconformably by Hadiyah Group volcano-sedimentary sequence. The serpentinites are hydrothermally altered to listwaenite along the tectonic contact with the volcano-sedimentary rocks. The main task of the present study is to utilize the Landsat ETM+ data for mapping the listwaenite exposures along the southem margin of Jabal AI-Wask serpentinites. Only serpentinites can be easily discriminated on the FCC principal components imagery in which they have sky blue image signature. On the 3/1 band ratio imagery listwaenite exposures have white image signature which may be due to the oxidation of magnesite and sulphides (the main constituents of listwaenite). Serpentinites and listwaenite have bright and dark grey image signatures respectively on 4/5 band ratio imagery. Absorption near band-4 leads to the lowering of 4/5 value and yields dark grey image signature to listwaenite. The false color composite ratio image 3/1 :R, 4/5:G, 5/7:B was generated and merged with high spatial resolution panchromatic band 8 using Intensity, Hue & Saturation (IHS) transformation method. The resultant fused image proved to be useful in delineating the listwaenite occurrences and generating 1 :50,000 geological image map for Jabal Al- Wask
ISSN
:
1548-1049
Journal Name
:
Egyptian Journal of Remote Sensing and Space Sciences
Volume
:
9
Issue Number
:
1
Publishing Year
:
1426 AH
2007 AD
Article Type
:
Article
Added Date
:
Tuesday, October 25, 2011
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
هشام محمد الحربي
alharbi, hesham muhammed
Researcher
Doctorate
Files
File Name
Type
Description
31139.pdf
pdf
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