Strontium isotope radiometric dating reveals the late Eocene and Oligocene successions in northern Kuwait

Amer, Aimen; Al-Hajeri, Mubarak

doi:10.1007/s12517-019-4455-4

Cited by 11 publications

(7 citation statements)

References 45 publications

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“…These rock units within the platform are gently dipping 1-2 degrees toward the northeast and thicken further away from the Arabian Shield towards the Zagros Mountains to the East (Owen & Nasr, 1958). The exposed units of this sequence in Kuwait are represented by the carbonate Middle Eocene Dammam Formation and the clastic Oligo-Pleistocene to the recent Kuwait Group (Owen & Nasr, 1958;Amer & Al-Hajeri, 2019). The Dammam Formation is mainly composed of carbonates with evaporites, shale deposits, and minor chert (Al-Awadi et al, 1997).…”

Section: Regional Geological Setting and Surface Stratigraphy Of Kuwaitmentioning

confidence: 99%

“…The Kuwait Group overlies the Dammam Formation unconformably. This Group is dominated by clastic deposits that range in age from the Early Oligocene to Pleistocene (Amer & Al-Hajeri, 2019). The Kuwait Group is divided into three major formations-from oldest to youngest-the Ghar Formation, the Lower Fars Formation, and the Dibdibba Formation (Owen & Nasr, 1958).…”

Section: Regional Geological Setting and Surface Stratigraphy Of Kuwaitmentioning

confidence: 99%

“…These studies were important in the context of understanding the tectonostratigraphic evolution. During the last 5 years, several attempts by geologists from oil companies to study the escarpment resulted in a few important publications such as Tanoli et al (2015), Amer et al (2017Amer et al ( , 2019a, Benham et al (2018), Amer and Al-Hajeri (2019), and Tanoli et al (2019). Gregory (1929) mentioned that within Kuwait, the presence of horizontal beds that have been described as the Kuwait series with little to be known about the age of such beds.…”

Section: Regional Geological Setting and Surface Stratigraphy Of Kuwaitmentioning

confidence: 99%

“…A radiometric isotope age dating work carried out by Amer and Al-Hajeri (2019) of oyster shells from the same bed indicated that they are Burdigalian in age (Early Miocene). Moreover, recent research by Amer et al (2019a) found that the heavy minerals in this unit are not sufficient to differentiate between Lower Fars and Dibdibba formations.…”

Section: Regional Geological Setting and Surface Stratigraphy Of Kuwaitmentioning

confidence: 99%

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Surface Geology of Kuwait

Alrefaei

Najem²,

Amer³

et al. 2022

Regional Geology Reviews

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This chapter represents a comprehensive review of Kuwait’s surface geology and stratigraphy from previous works accomplished by numerous geoscience researchers in the past decades. The surface of Kuwait is characterized by nearly flat topography, featureless to gently undulating, apart from a few tens of meters of escarpments in the north and south, and flat low to moderately elevated hills and ridges. It predominantly consists of siliciclastic sediments and sedimentary rock units ranging in age from Middle Eocene to Holocene. The main stratigraphic exposed successions are located in Jal Az-Zor escarpment, Al-Subyiah (Bahrah) area, Ahmadi Quarry, the Khiran Ridges, and the Enjefa Beach. The oldest exposed rock units are represented by the Middle Eocene Dammam Formation, which is exposed at the Ahmadi Quarry, whereas the youngest recent deposits cover most of Kuwait’s surficial area and lie on top of the Kuwait Group’s deposits. This chapter will illustrate the geology and stratigraphy of Kuwait's surface sediments and sedimentary rock strata. Recommendations and future insights were also documented as part of the way forward to improve the presently available work for the surface geology of Kuwait.

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Section: Regional Geological Setting and Surface Stratigraphy Of Kuwaitmentioning

confidence: 99%

Section: Regional Geological Setting and Surface Stratigraphy Of Kuwaitmentioning

confidence: 99%

Section: Regional Geological Setting and Surface Stratigraphy Of Kuwaitmentioning

confidence: 99%

Section: Regional Geological Setting and Surface Stratigraphy Of Kuwaitmentioning

confidence: 99%

See 2 more Smart Citations

Surface Geology of Kuwait

Alrefaei

Najem²,

Amer³

et al. 2022

Regional Geology Reviews

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“…The study area is located in the northeast arch of Kuwait bay within the post Eocene Kuwait Formation, a representative strata of the traditional tripartite subdivision of Ghar, Lower Fars, and Dibdibba formations 39 , 40 . The subsurface formation of this area was recently reinterpreted in relation to prolonged tectonic compression and strike-slip tectonics.…”

Section: Site Description and Samplingmentioning

confidence: 99%

Dolomite genesis in bioturbated marine zones of an early-middle Miocene coastal mud volcano outcrop (Kuwait)

Alibrahim

Duane

Dittrich

2021

Sci Rep

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The origin of spheroidal dolomitized burrow from Al-Subiya sabkha in Kuwait was previously described as enigmatic as no evidence of precursor calcium carbonate was found in the siliciclastic sediment. An assumption for the genesis of spheroidal dolomite from the same area was attributed to hydrocarbon seepage but no evidence was provided. Here, we investigated a recently discovered early-middle Miocene coastal mud volcano outcrop in Al-Subiya sabkha where dolomitized burrows and spheroidal dolomite are found in bioturbated marine zones, and associated with traces of salt. Conversely, the continental zone lacks bioturbation features, dolomite and traces of salt, which together contrast with bioturbated rich marine zones. Geochemical signatures of Rare Earth Elements + Yttrium show a true positive Ce anomaly (Ce/Ce* > 1.2) and positive Eu/Eu* anomaly of spheroidal dolomite indicating strictly anoxic conditions, and sulphate reduction to sulphide, respectively. Our results are suggestive of a relationship between dolomite formation and interdependent events of hydrocarbon seepage, flux of hypersaline seawater, bioturbation, and fluid flow in the marine zones of the mud volcano. The bioturbation activity of crustaceans introduced channels/burrows in the sediment–water interface allowing for the mixing of seeped pressurized hydrocarbon-charged fluids, and evaporitic seawater. In the irrigated channels/burrows, the seeped pressurized hydrocarbon-charged fluids were oxidized via microbial consortia of methanotrophic archaea and sulphate-reducing bacteria resulting in elevated alkalinity and saturation index with respect to dolomite, thus providing the preferential geochemical microenvironment for dolomite precipitation in the bioturbated sediment.

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Structures and Tectonics of Kuwait

Naqi

Amer²

2022

Regional Geology Reviews

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Despite the surface geology of Kuwait appears to be scarce and most of the country is covered with Quaternary deposits except for a few outcrops of Oligo-Miocene to Pleistocene age, the subsurface geology of Kuwait is quite unique and astonishing. The discovery of hydrocarbon in Kuwait at the beginning of the last century helped geologists to better understand the structural geology of Kuwait especially by utilizing geophysical methods such as potential field methods (e.g., gravity and magnetic) and seismic reflection. Being part of the Arabian Peninsula, the structural geology of Kuwait shares many of the Arabian Peninsula structural trends. The dominant N-S trending structures of the Arabian Plate are manifested in the Kuwait Arch which is one of the major structures of the country where many of the oil and gas oil fields are associated with. Other dominant structural trends of the Arabian Plate such as NE-SW and NW–SE are resembled in Kuwait as Jal Az-Zor and Dibdibah Trough, respectively. Paleo- and in-situ stress analysis is an important subject for oil and gas exploration, and many studies have been commissioned to better understand them in most of the Kuwaiti fields. The present-day in-situ stress in Kuwait is oriented NE-SW resembling the current tectonic setting of the region due to the collision of the Arabian Plate with the Eurasia Plate since the Oligocene. This chapter will present a thorough review of the previous studies discussing the surface and subsurface structural geology of Kuwait.

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Strontium isotope radiometric dating reveals the late Eocene and Oligocene successions in northern Kuwait

Cited by 11 publications

References 45 publications

Surface Geology of Kuwait

Surface Geology of Kuwait

Dolomite genesis in bioturbated marine zones of an early-middle Miocene coastal mud volcano outcrop (Kuwait)

Structures and Tectonics of Kuwait

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