Structural and geomorphic features accommodating groundwater of Al-Madinah City, Saudi Arabia

Bamousa, Abdullah O.; Matar, Saleh S.; Daoudi, Mohamed; Al-Doaan, Mahmoud

doi:10.1007/s12517-012-0574-x

Cited by 13 publications

(8 citation statements)

References 18 publications

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“…The basin, which is related to transtensional faults in this extensional environment (Fig. 2) (Bamousa et al 2013), has a ground surface elevation of 600-610 m asl and is gently inclined towards the north-west. It has a maximum thickness of 45 m and is filled by Tertiary and Quaternary alluvial deposits (predominantly cohesive clay-rich sediments) (Matsah and Hossain 1993).…”

Section: Al-madinah Basinmentioning

confidence: 96%

“…1c, d) were formed in the western side of the Al-Madinah basin (Fig. 2), which is a 13×23-km-flat area surrounded by hills and a lava plateau (see Matsah and Hossain 1993;Bamousa et al 2013). The basin, which is related to transtensional faults in this extensional environment (Fig.…”

Section: Al-madinah Basinmentioning

confidence: 99%

“…Despite the arid environment and dry climate in the region (rainfall of ∼50 mm per year; El Maghraby 2014) that has prevailed during the Quaternary (Al-Sayari and Zötl 1978), the Al-Madinah basin is an active hydrological zone, which is underlain by fractured rocks that contain groundwater and form the northern Harrat Rahat basaltic aquifer (Bamousa et al 2013). This aquifer has a saturated thickness of up to 60 m and is hosted within the volcanic rocks but also within the upper part of the basement and the pre-basalt sediments (Al-Shaibani et al 2007).…”

Section: Hydrogeologymentioning

confidence: 99%

“…2) (Matsah and Hossain 1993). Although these fluvial systems may bring water from far distances (km) (Bamousa et al 2013), it is mostly lost through direct infiltration and evaporation, and therefore local rainfall is the main source of aquifer recharge (see e.g. Pellaton (1981) and Matsah and Hossain (1993) Khashogji and El Maghraby 2013;El Maghraby 2014).…”

Section: Hydrogeologymentioning

confidence: 99%

“…The water table was earlier recorded at between 22 and 24 m below the ground surface (Matsah and Hossain 1993), but in more recent years is thought to have become shallower, due to tighter controls on water extraction (Al-Shaibani et al 2007;Bamousa et al 2013). There are water springs in the central area, present due to underground anthropogenic barriers that cause the upwelling of groundwater (Bamousa et al 2013).…”

Section: Hydrogeologymentioning

confidence: 99%

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The Al-Du’aythah volcanic cones, Al-Madinah City: implications for volcanic hazards in northern Harrat Rahat, Kingdom of Saudi Arabia

et al. 2015

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The basaltic Al-Du'aythah volcanic cones lie in the northern part of the extensive lava field of Harrat Rahat, and only 13 km from the centre of Al-Madinah City, in the Kingdom of Saudi Arabia. Historical records indicate they may have erupted in AD 641. The four cones are formed by deposits that record a transition from phreatomagmatic to magmatic explosions followed by minor lava effusion. Three cones display elongated tuff rings at the base, and two produced late-stage lava flows. The cones themselves are symmetrical and constructed mostly by the accumulation of ballistically ejected pyroclasts. Spherical bombs and lapilli (cannonball bombs/lapilli), occasionally with country-rock fragments inside (both cored and loaded bombs/lapilli) are common within the tuff ring deposits. LiDAR data show a total volume of 1,664×10 −6 km 3 for the four cones (418×10 −6 km 3 DRE). Whole-rock chemical analyses indicate alkali-basalt compositions (SiO 2 44.7-45.9 wt%), with little compositional variation and no relationship between chemistry and eruptive styles. Small differences in composition may reflect variations in fractional crystallisation of clinopyroxene and olivine. A magnetotelluric 2D cross-section shows that the cones are located adjacent to a buried sediment-filled alluvial channel along a NNW-SSE fault dipping to the east. The AlDu'aythah eruption was related to the ascent of magma through this structure, with the first phase of the eruption triggered by the interaction of the magma with water from the northern Harrat Rahat aquifer that exists in the AlMadinah basin. This initial water source was rapidly exhausted, while the eruption progressed roughly from north to south and from west to east, the latter motion probably along the fault-controlled feeding dyke. Our work draws attention to the existence of recent explosive phreatomagmatic eruptions in the Al-Madinah basin, which, despite the hyperarid climate of the area, must be considered a potential future eruption hazard.

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Section: Al-madinah Basinmentioning

confidence: 96%

Section: Al-madinah Basinmentioning

confidence: 99%

Section: Hydrogeologymentioning

confidence: 99%

Section: Hydrogeologymentioning

confidence: 99%

Section: Hydrogeologymentioning

confidence: 99%

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The Al-Du’aythah volcanic cones, Al-Madinah City: implications for volcanic hazards in northern Harrat Rahat, Kingdom of Saudi Arabia

et al. 2015

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Groundwater quality and hydrochemical properties of Al-Ula Region, Saudi Arabia

Toumi

Hussein

Rafrafi

et al. 2015

Environ Monit Assess

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Groundwater quality monitoring is one of the most important aspects in groundwater studies in arid environments particularly in developing countries, like Saudi Arabia, due to the fast population growth and the expansion of irrigated agriculture and industrial uses. Groundwater samples have been collected from eight locations in Al-Ula in Saudi Arabia during June 2012 and January 2013 in order to investigate the hydrochemical characteristics and the groundwater quality and to understand the sources of dissolved ions. Physicochemical parameters of groundwater such as electrical conductivity, pH, total dissolved solid, and major cations and anions were determined. Chloride was found to be the dominant anion followed by HCO(-) 3 and SO4 (2-). Groundwater of the study area is characterized by the dominance of alkaline earths (Ca(2+) + Mg(2+)) over alkali metals (Na(+) + K(+)). The analytical results show that the groundwater is generally moderately hard and slightly alkaline in nature. The binary relationships of the major ions reveal that water quality of the Al-Ula region is mainly controlled by rock weathering, evaporation, and ion exchange reactions. Piper diagram was constructed to identify hydrochemical facies, and it was found that majority of the samples belong to Ca-Cl and mixed Ca-Mg-Cl facies. Chemical indices like chloro-alkali indices, sodium adsorption ratio, percentage of sodium, residual sodium carbonate, and permeability index were calculated. Also, the results show that the chemical composition of groundwater sources of Al-Ula is strongly influenced by lithology of country rocks rather than anthropogenic activities.

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Evaluation of groundwater resources for drinking and agricultural purposes, Abar Al Mashi area, south Al Madinah Al Munawarah City, Saudi Arabia

Khashogji

Maghraby

2012

Arab J Geosci

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Structural and geomorphic features accommodating groundwater of Al-Madinah City, Saudi Arabia

Cited by 13 publications

References 18 publications

The Al-Du’aythah volcanic cones, Al-Madinah City: implications for volcanic hazards in northern Harrat Rahat, Kingdom of Saudi Arabia

The Al-Du’aythah volcanic cones, Al-Madinah City: implications for volcanic hazards in northern Harrat Rahat, Kingdom of Saudi Arabia

Groundwater quality and hydrochemical properties of Al-Ula Region, Saudi Arabia

Evaluation of groundwater resources for drinking and agricultural purposes, Abar Al Mashi area, south Al Madinah Al Munawarah City, Saudi Arabia

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