Lithostratigraphy of the Middle Eocene Dammam Formation in Qatar, Arabian Gulf: effects of sea-level fluctuations along a tidal environment

Al-Saad, Hamad

doi:10.1016/j.jseaes.2004.07.009

Cited by 32 publications

(22 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on published studies, the Paleogene rocks that comprise the near-surface aquifers of Qatar consist of three formations: (1) the Paleocene-Lower Eocene (Ypresian) Umm er Radhuma Formation, (2) the Lower Eocene (Ypresian) Rus Formation, and (3) the Middle Eocene (Lutetian/Bartonian) Dammam Formation (Cavelier et al 1970;Cavalier 1975;Eccleston et al 1981;Boukhary and Alsharhan 1998;Al-Saad 2005;Boukhary et al 2011) (Figs. 2, 3, and 4).…”

Section: Lithostratigraphic Divisionmentioning

confidence: 99%

“…2) and~40 m along the western coast (Abu-Zeid 1991). The formation has been divided into five members (Cavelier et al 1970;Cavalier 1975;Al-Saad 2005) including (1) the Rujm Aid Member (fossiliferous limestone, formerly the Fhaihil Velates Member), (2) the Midra Shale Member (argillaceous limestone), (3) the Alveolina Member (formerly the Dukhan Member, fossiliferous limestone with conspicuous Alveolina foraminifera, (4) the Umm Bab Member (marly dolomitic limestone), and (5) the Abaruq Member (dolomitic limestone). Commonly, not all members are present at one location.…”

Section: Lithostratigraphic Divisionmentioning

confidence: 99%

“…Commonly, not all members are present at one location. For example, in north-central Qatar, Al-Saad (2005) interprets the Dammam Formation to include the Midra Shale, Alveolina, and Umm Bab Members (well B, their Fig. 2), whereas Abu-Zeid (1991) interprets cores from the same area to only include Umm Bab Member (wells p35 and p27, their Fig.…”

Section: Lithostratigraphic Divisionmentioning

confidence: 99%

“…Studies of the Eocene rocks of Qatar are numerous and focus on hydrology (Eccleston et al 1981;Baalousha 2016), diagenesis Holail et al 2005), lithostratigraphy (Cavelier et al 1970;Abu-Zeid and Boukhary 1984;Abu-Zeid 1991;Boukhary and Alsharhan 1998;Dill et al 2003;Al-Saad 2005), biostratigraphy (Boukhary et al 2011), and structure (Rivers and Larson 2018). Building on these studies, an effort was undertaken to update the understanding of the near-surface stratigraphy of Qatar in light of both the Rivers and Larson (2018) structural study, as well as recently published regional maps of Eocene depositional environments (Tai et al 2016).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The depositional history of near-surface Qatar aquifer rocks and its impact on matrix flow and storage properties

et al. 2019

View full text Add to dashboard Cite

Carbonates and evaporites of Paleogene age form the shallow-aquifer rocks mantling most of Qatar, including the Paleocene and Lower Eocene Umm er Radhuma Formation and the Lower to Middle Eocene Rus and Dammam Formations. A core-based study was carried out to improve general understanding of the stratigraphic controls on aquifer matrix properties in Qatar. A cumulative total of 377 m of 10-cm-diameter core was recovered from three boreholes in central and northern Qatar, drilled to depths of greater than 120 m. Sedimentological attributes of these rocks were investigated through core and thin-section description, X-ray diffraction-based mineralogical assessment, as well as whole-rock stable isotopic analysis and integrated with interpretation of gamma-ray logs. Stratigraphic correlation of the penetrated intervals was then undertaken using sequence stratigraphic concepts and isotope stratigraphy (δ 13 C trends) in the context of recently published regional paleomaps and structural studies. In the area of Qatar, the Umm er Radhuma Formation and the overlying Traina Member of the Rus Formation were deposited in marine settings of two different basins. These basins, which extended to the south and north of Qatar, respectively, are interpreted to have been separated by a topographic high, the location of which was controlled by the presence of high-angle normal faults. The southern basin was more restricted and was the site of extensive evaporite and clay-rich siliciclastic deposition during early stages of Rus Formation. Similar evaporites and fine siliciclastic deposits are not observed in time-equivalent strata of the northern basin. During subsequent deposition of the Al Khor Member of the Rus Formation, as well as the Dammam Formation, the basins appear to have been interconnected, and fine-grained siliciclastic deposits are interbedded with, but subordinate to, carbonate strata across Qatar. Most rocks recovered for this study are dolomitic, and dolomitic rocks free of other mineral phases tend to have significant porosity (20-50%) and permeability (10-1000 mD). Decreased connectivity, flow, and storage capacity are caused by (1) the presence of gypsum beds and nodules (only southern Qatar, upper Umm er Radhuma Formation, and Rus Formation), (2) the presence of pore-occluding clays (typically palygorskite) to varying degrees in all formations, and (3) the occurrence of diagenetic calcites, most commonly in the Dammam Formation. Aquifer quality of the near-surface rocks of Qatar is in large part a function of their depositional history and is to a degree predictable using reconstruction of basin architecture, as well as sequence stratigraphic concepts.

show abstract

Section: Lithostratigraphic Divisionmentioning

confidence: 99%

Section: Lithostratigraphic Divisionmentioning

confidence: 99%

Section: Lithostratigraphic Divisionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The depositional history of near-surface Qatar aquifer rocks and its impact on matrix flow and storage properties

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Today's low to moderate relief is formed by the Lower and Middle Eocene Rus and Dammam formations representing shallow marine carbonates with intercalated anhydrites [29,30]. Tectonic uplift and slight folding since then resulted in the emergence of Qatar, its continental conditions, and a shortage of sediments from subsequent stages and series.…”

Section: The Physical Setting and Wind Pattern Of Qatarmentioning

confidence: 99%

Migration of Barchan Dunes in Qatar–Controls of the Shamal, Teleconnections, Sea-Level Changes and Human Impact

2018

View full text Add to dashboard Cite

Abstract:Barchan dune fields are a dominant landscape feature in SE Qatar and a key element of the peninsula's geodiversity. The migration of barchan dunes is mainly controlled by dune size, wind patterns, vegetation cover and human impact. We investigate the variability of dune migration in Qatar over a time period of 50 years using high-resolution satellite and aerial imagery. We then explore its relation to the regional Shamal wind system, teleconnection patterns, and limitations in sand supply associated with the transgression of the Arabian Gulf. Strong size-dependent differences in migration rates of individual dunes as well as significant decadal variability on a dune-field scale are detected, which are found to correlate with the intensity of the North Atlantic Oscillation (NAO) and the Indian Summer Monsoon (ISM), in particular during years of relatively strong (weak) summer Shamals. High uncertainties associated with the extrapolation of migration rates back into the Holocene, however, do not permit further examination of the timing of the loss of sand supply and the onset of the mid-Holocene relative sea-level (RSL) highstand. For the youngest phase considered in this study (2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014)(2015), human impact has likely accelerated dune migration under a weakening Shamal regime through sand mining and excessive vehicle traffic upwind of the core study area.

show abstract

Critical pressure (Pc) and critical temperature (Tc) of Midra shale

Alipour,

Sakhaee-Pour

2024

J Petrol Explor Prod Technol

View full text Add to dashboard Cite

The critical pressure (Pc) and critical temperature (Tc) of shale gas depend on the characteristic pore size because of the importance of fluid–rock interactions in the matrix. This size dependency is neglected in highly permeable formations, where gas composition is only implemented because the fluid–fluid interactions are dominant. This study determines the critical properties by accounting for the characteristic pore size in the shale matrix and gas composition. The analyzed components are carbon dioxide, ethane, methane, n-butane, nitrogen, pentane, and propane. It shows that the bulk properties overestimate the actual critical properties. The overestimation varies between 15 and 26% in a uniform 5 nm conduit with a circular cross section, and it increases nonlinearly when decreasing the conduit size. Overestimation versus size is presented to provide a convenient tool for correcting the existing data. This study also determines the critical properties of Midra shale by accounting for the pore-throat size and pore-body size distributions. The former distribution is based on the mercury injection capillary pressure measurements of eight samples, whereas the latter is based on the nitrogen adsorption measurements of six samples. This study indicates that common bulk properties overestimate the critical properties of the studied shale between 5 and 22%. The results have applications in characterizing multiphase transport in shale gas reservoirs.

show abstract

Lithostratigraphy of the Middle Eocene Dammam Formation in Qatar, Arabian Gulf: effects of sea-level fluctuations along a tidal environment

Cited by 32 publications

References 9 publications

The depositional history of near-surface Qatar aquifer rocks and its impact on matrix flow and storage properties

The depositional history of near-surface Qatar aquifer rocks and its impact on matrix flow and storage properties

Migration of Barchan Dunes in Qatar–Controls of the Shamal, Teleconnections, Sea-Level Changes and Human Impact

Critical pressure (Pc) and critical temperature (Tc) of Midra shale

Contact Info

Product

Resources

About