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Document Type |
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Article In Journal |
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Document Title |
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Hydrogeological and Hydrochemical Indications of Faults Control on Groundwater Flow and Quality in Wadi Fatimah Basin, Western Part of Saudi Arabia مؤشرات هيدروجيولوجية وهيدروكيميائية لتحكم الصدوع على سريان ، ونوعية المياه الجوفية بحوض وادي فاطمة ، الجزء الغربي من المملكة العربية السعودية |
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Subject |
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Earth Sciences |
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Document Language |
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Arabic |
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Abstract |
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The measurements of the water table and total depths
of the drilled wells and the chemical composition of the groundwater,
indicated that the occurrence of highly saline water zones
in Al Sail Al Kabir and Al Jumum - Bahrah areas located within
Fatimah basin, might be attributed to faults that occur in these regions.
It is believed that these faults might have played an important
role in developing semi-isolated groundwater basins due to
their influence on free groundwater flow to these isolated basins,
that contain highly saline water. In Al Sail Al Kabir region, it was
observed that a dike extending east-west, which is probably a
trace of the extension of Wadi Al Yamaniyyah fault, divided the
area into two main parts; the southern and northern. In the southern
part, the groundwater salinity is low, and the EC measurements
ranged from 866 to 1689 mS/cm, whereas, in the northern
part the groundwater salinity varied between 3420 and 5020 mS/
cm. The presence of this dike may constitute a groundwater barrier
that impeded the groundwater general flow from the south to
the north direction. This may modify the groundwater path way
toward the west to Wadi Al Yamaniyyah. On the other hand, in Al
Jumum-Bahrah region, the EC measurements show that the
groundwater salinity varies between 5400 and 24900 mS/cm, and
the highly mineralized water zone exists between Hadda and Bahrah.
The well records, as well as the geophysical survey carried
out in this area indicate, that the presence of highly mineralized
groundwater zone might be attributed to the effect of the extension
of the Shumaysi fault that runs northwesterly. This fault might
have elevated the aquifer bedrock to a shallower level in this area,
which in turn blocked the groundwater flow throughout the main
channel of the wadi basin, and probably was modified towards
Wadi Shumaysi. The landsat image indicates another fault located
in the vicinity of the outlet of the Fatimah basin, and runs in a
north-east direction. It might have uplifted the bedrock as well.
The effects of these two buried faults had probably formed a semiisolated
basin that contains highly saline groundwater. |
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ISSN |
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1012-8832 |
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Journal Name |
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Earth Sciences Journal |
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Volume |
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17 |
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Issue Number |
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1 |
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Publishing Year |
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1427 AH
2006 AD |
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Number Of Pages |
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24 |
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Article Type |
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Article |
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Added Date |
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Sunday, October 11, 2009 |
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Researchers
| محمود سعيد اليماني | Mahmoud Said Alyamani | Researcher | | |
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