Sedimentology of the Paleozoic Wajid Group in Saudi Arabia
Sedimentology and dynamic stratigraphy of the Wajid Group in SW Saudi Arabia
Antragsteller: Christoph Schüth, Matthias Hinderer, Thomas Schiedek
Förderung: Umweltforschungszentrum Halle-Leipzig, GTZ, Dornier Consult
Bearbeiter: Alajmi Hussain Fahad, Helmut Bock
In Saudi Arabia several large aquifers exist from which fossil groundwaters are withdrawn especially for irrigation purposes. One of these aquifers is the palaeozoic Wajid sandstone in SW Saud Arabia. To get a better estimate of water resources in this hyperarid area, we study the reservoir properties using sedimentology, palynology, and sequence stratigraphy in cooperation with the German Gesellschaft für Technische Zusammenarbeit (GTZ, Eschborn), Dornier consult, and the Saudi Ministry of Water and Energy. The Wajid group was deposited at the western margin of the Arabian Plate from Cambrian to Permian time. Over this long time period of about 300 Ma plate movement and geodynamic processes at the northern edge of Gondwana, eustatic sea level changes as well as climatic changes are well documented in a clastic continental sequence which shows increasing marine intercalations towards the east. Of major interest are glacial to proglacial deposits of the ordovician and permian glaciations of Gondwana which were reach great thicknesses in channels and show very good reservoir qualities. Although the “Wajid sandstone” holds important groundwater resources which are intensively used and extensive outcrops exist, a modern study of sedimentary facies and dynamic stratigraphy of the Wajid Group is missing. This study aims to fill this gap.
List of Publications:
AL AJMI, H., KELLER, M., HINDERER, M., RAUSCH, R. (2008): New Insights into the Facies Distribution of the Wajid Sandstone in its Western Outcrop-Area and Implication on Reservoir Properties. – Proceedings of the 3rd International Conference on Water Resources and Arid Environments 2008 and the 1st Arab Water Forum, 13 p., 3 fig., in print; Riyadh.
KELLER, M., AL AJMI, H., HINDERER, M., RAUSCH, R. (2009): Palaeozoic glacial and proglacial depositional environments on the Arabian Platform II: Permian glaciation (Juwayl Formation, Upper Wajid Group, SW Saudi Arabia). – Proceedings of the 27th IAS Meeting of Sedimentology, p. 230; Alghero.
AL AJMI, H., KELLER, M., HINDERER, M., RAUSCH, R. (2009): Palaeozoic glacial and proglacial depositional environments on the Arabian Platform I: Ordovician glaciation (Sanamah Formation, Lower Wajid Group, SW Saudi Arabia). – Proceedings of 27th IAS Meeting of Sedimentology, p. 51; Alghero.
KELLER, M., AL-AJMI, H., HINDERER, M., RAUSCH, R. (2009): Sedimentary History of the Paleozoic Wajid Group (Saudi Arabia) and Implications for the Tectono-Stratigraphic Evolution of the Southwestern Arabian Platform. – Abu Dhabi (in print).
HINDER, M., KELLER, M., AL-AJMI, H., RAUSCH, R. (2009): Tales of two Glaciations in the Paleozoic of SW Saudi Arabia: Implications for Ice Shield Dynamics and Paleography of the SW Arabian Platform and Adjacent Areas. – Abu Dhabi (in print).
KELLER, M., HINDERER, M., AL-AJMI, H., RAUSCH, R. (2009): Aspects of Ordovician glacial deposits in southern Saudi Arabia. – IGCP 505; Copenhagen.
HINDERER, M., KELLER, M., AL AJMI, H., RAUSCH, R., FILOMENA, C. (2009): Mature proglacial sediments as a consequence of extreme chemical weathering in the upper Ordovician (Sanamah Formation, Lower Wajid Group), SW Saudi Arabia. – Göttingen.
ZEEB, C., GÖCKUS, D., BONS, P., AL AJMI, H., RAUSCH, R., BLUM, P. (2010): Fracture flow modelling based on satellite images of the Wajid sandstone, Saudi Arabia. – 1 tab., 8 fig., Hydrogeology Journal (in print).
DIRKS, H., AL AJMI, H., RAUSCH, R. (2010): Zur Hydrogeologie des Wajid Aquifers, SW Saudi Arabien. – FHDGG-2010; Hannover.
SCHÜTH, C., KALLIORAS, A., PIEPENBRINK, M., PFLETSCHINGER, H., AL-AJMI, H., ENGELHARDT, I., RAUSCH, R., AL-SAUD, M. (2010): New Approaches to Quantify Groundwater Recharge in Arid Areas. – The International Conference on Water Resources and Arid Environments (ICWRAE); Riyadh.
AL-AJMI, H., HINDERER, M., KELLER, M., RAUSCH, R. (2010): The role of outcrop analogue studies for the characterization of aquifer units. – The International Conference on Water Resources and Arid Environments (ICWRAE); Riyadh.
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