Geomorphological and sedimentological characteristics of coastal and inland sabkhas, Southern Kuwait

Al‐Hurban, Adeeba; Gharib, I.M.

doi:10.1016/s0140-1963(03)00128-9

Cited by 34 publications

(26 citation statements)

References 18 publications

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“…Basic geomorphological and sedimentary research on continental sabkhat of the Arabian Peninsula is scarce (Abed, 2002;Alsaaran, 2008;Al-Harbi et al, 2006;Al-Hurban and Gharib, 2004;Barth, 1998;Goodall et al, 2000;Smith, 1981;Spencer, 2000); the Tayma oasis is terra incognita in this regard. Likewise, the role of sabkhat as records of climate change and palaeoenvironmental change is not entirely understood.…”

Section: Introductionmentioning

confidence: 99%

Holocene chemical precipitates in the continental sabkha of Tayma (NW Saudi Arabia)

Ginau

Engel

Brückner

2012

Journal of Arid Environments

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Section: Introductionmentioning

confidence: 99%

Holocene chemical precipitates in the continental sabkha of Tayma (NW Saudi Arabia)

Ginau

Engel

Brückner

2012

Journal of Arid Environments

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“…Due to their many varieties, quartz grains have also been used for durability and provenance studies (Blatt & Christie 1963;Basu et al 1975;Harrell & Blatt 1978;Kwon & Boggs Jr 2002). Some studies have focused on scanning electron microscope (SEM) analysis to interpret the mechanical and chemical processes that characterise the shape and surface features of quartz grains (Mazzullo et al 1986;Pye & Mazzullo 1994;Moral Cardona et al 1997;Al-Hurban & Gharib 2004). However, these studies have not considered the mechanical and chemical processes that modify quartz grains from modern beach and dune environments, as well as their durability in these environments.…”

Section: Introductionmentioning

confidence: 99%

Petrography of quartz grains in beach and dune sands of Northland, North Island, New Zealand

Kasper-Zubillaga

Dickinson

Carranza‐Edwards

et al. 2005

New Zealand Journal of Geology and Geophysics

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Petrographic and scanning electron microscopy (SEM) analyses of quartz grains from beach and dune sands were carried out in the western and eastern Northland coasts, New Zealand, to examine variations in durability and surface texture, which are controlled by mechanical and chemical processes, in profiles across beach and dune environments. This was done through point counts of quartz grain properties based on extinction angle and crystallinity. Variations in surface texture were assessed through SEM observations of mechanical features (conchoidal fractures, smooth surfaces, groove forms) and chemical features (solution pits, etching, silica deposits). Mechanically produced grooves are associated with beach sands affected by the high energy of the surf zone. Both mechanical and chemical processes occur in the eastern dune sands. They are associated with the greater abundance of angular grains in the eastern dune sands than the western dune sands. In addition, conchoidal fractures produced by the collision of grains in aeolian environments and linear and curved grooves produced by quartz grains from the beach support the mechanical processes taking place in the dunes. Solution pits, etching, and the presence of diatoms in the quartz grains are associated with pedogenesis and high silica precipitation in the eastern beach and dune sands. The durability of coarse-grained polycrystalline quartz relative to fine-grained polycrystalline quartz suggests that chemical abrasion exerts control over the distribution of quartz types in the dune sands.

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“…Salt flats and depressions formed at the time of this fluctuating sea level and simultaneous erosion of late Quaternary [13]. Carbonates deposited on the seabed during phases of flooding and shrivel, once the water retreated.…”

Section: Geologic Setting Of Sabkhamentioning

confidence: 99%

Mapping Sabkha Land Surfaces in the United Arab Emirates (UAE) using Landsat 8 Data, Principal Component Analysis and Soil Salinity Information

Abuelgasim¹,

Ammad²

2017

IJEM

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Sabkha is an Arabic word for a salt-flat area found mainly along arid area coastlines and inlands within sand dunes areas. The sabkha that form within the sand are relatively flat and very saline areas of sand or silt that forms just above the water-table where the sand is cemented together by evaporite salts from seasonal ponds. Such shallow water is normally highly saline. Here the crust is rich in gypsum and halite veins where the underline thin layer is made of sand and silt. Such sabkha have an average thickness of a meter or slightly less. On the other hand, marine sabkha represent transitional environments between the land and the sea. The UAE is home to some of the largest concentrations of sabkha both coastal and inland. The coastal areas of Abu Dhabi include several small shoals, islands, protected lagoons, channels and deltas, an inner zone of intertidal flats with algal mats and broad areas of supratidal sabkha salt flats.Identifying sabkha habitats from remotely sensed data is a challenging process. Traditional classification techniques of multispectral data alone, usually fail to properly identify sabkha pixels or provide lower rates of mapping accuracy for sabkha habitats. The primary objective of this research is to develop a much more accurate methodology for properly mapping and identifying sabkha areas from remotely sensed data. Properly mapping sabkha habitats from remotely sensed data is the first steps towards studying the ecological changes within such habitats using earth observation techniques. Furthermore, sabkha habitats can in certain situations be a geotechnical hazard due to its highly salinity and with adverse effects on concrete, asphalt, steel and other structures, in addition to their sporadic heaves and collapses. As the UAE continue to build major infrastructure and development projects identifying the location of such habitats is vitally important.In this research a new technique that combines the multispectral information of Landsat 8, principal component analysis and spectral soil salinity detection is developed. The study area is located in the western part of the UAE along the border with the Kingdom of Saudi Arabia, an area known to include large tracks of inland and coastal sabkha. Landsat 8 data from path 161 and row 43 was acquired for the study. A multi-source classification approach was followed that utilizes the multispectral data of Landsat 8 along with components from the principal components analysis and the spectral salinity index maps. The preliminary results confirmed * Corresponding author. Tel.: E-mail address: 2 Mapping Sabkha Land Surfaces in the United Arab Emirates (UAE) using Landsat 8 Data, Principal Component Analysis and Soil Salinity Informationby field observations show that the combined data improved the classification accuracy to almost 90% in comparison to multispectral data alone of 78%.

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Geomorphological and sedimentological characteristics of coastal and inland sabkhas, Southern Kuwait

Cited by 34 publications

References 18 publications

Holocene chemical precipitates in the continental sabkha of Tayma (NW Saudi Arabia)

Holocene chemical precipitates in the continental sabkha of Tayma (NW Saudi Arabia)

Petrography of quartz grains in beach and dune sands of Northland, North Island, New Zealand

Mapping Sabkha Land Surfaces in the United Arab Emirates (UAE) using Landsat 8 Data, Principal Component Analysis and Soil Salinity Information

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