Modern Evaporite Deposition and Geochemistry of Coexisting Brines, the Sabkha, Trucial Coast, Arabian Gulf

Butler, Godfrey P.

doi:10.1306/74d71be5-2b21-11d7-8648000102c1865d

Cited by 55 publications

(7 citation statements)

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“…As regards the presence of highly soluble evaporites-such as epsomite and bischofite-in the Fracasso Beach salt marsh, it is to be expected for their crystals to occur in metastable forms that may dissolve with the atmospheric humidity (Schreiber and Tabakh, 2000). Even though such evaporites may be stable in arid salt marshes, they are more typical of marine environments with high temperatures and evaporation rates, such as the areas of the Arabian Gulf, the Dead Sea or the Red Sea (Butler, 1969;El-Omla and Aboulela, 2012;Aref et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

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Precipitation/dissolution of marine evaporites as determinants in groundwater chemistry in a salt marsh (Península Valdés, Argentina)

2016

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Section: Discussionmentioning

confidence: 99%

“…In salt marsh environments of arid climates, evaporites are mineral facies frequently occurring (Butler, 1969). Most evaporite minerals found in such environments are the result of direct precipitation from the seawater that floods the salt marsh-mainly during spring high tides (syzygy) or storm events-which then evaporates (Warren, 2006).…”

Section: Introductionmentioning

confidence: 99%

Precipitation/dissolution of marine evaporites as determinants in groundwater chemistry in a salt marsh (Península Valdés, Argentina)

2016

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“…The dolomite sample Q1, interpreted as a primary precipitate (Brauchli et al., 2016), was extracted from a short core collected in the supratidal zone at 40 cm depth in the Dohat Faishakh sabkha on the western coast of the Qatar peninsula (see Müller et al., 2019). Long‐term water temperature measurements do not exist for the sample location, but measurements from the same area (Illing et al., 1965) and estimates from well‐studied analogous environments (Butler, 1969) constrain sample formation temperature to 32 ± 6°C. The 015 and 021 dolomite ordering peaks are clearly visible, but the 101 reflection is not (Müller et al., 2019).…”

Section: Methodsmentioning

confidence: 99%

Re‐Assessing the Need for Apatite‐ and Dolomite‐Specific Calibrations of the Carbonate Clumped Isotope Thermometer

Anderson,

Bonifacie,

Jost

et al. 2024

Geochem Geophys Geosyst

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A few key methodological uncertainties remain for the carbonate clumped isotope community. One is how to compare data among published data sets that are not anchored to the InterCarb Carbon Dioxide Equilibrium Scale (I‐CDES). A second is how temperature calibrations of calcite compare to those of other carbonate minerals in the I‐CDES—particularly dolomite and apatite—which can elucidate several Earth system dynamics. Previous calibrations of the clumped isotope thermometer for dolomite are discrepant from one another and variably (dis)agree with calibrations developed for calcite; apatite calibrations have not yet been compared between laboratories using carbonate‐based standardization. Here we report I‐CDES standardized values for a suite of 11 carbonates that are commonly measured by the clumped isotope community to aid future comparisons of non‐I‐CDES data sets. In addition, 17 dolomite samples (25–1,200°C) and five apatite samples (1–38°C) of known precipitation temperature were measured using carbonate‐based standardization. Excellent agreement between calcites and dolomites heated to similar temperatures (1,100–1,200°C) suggests no mineral‐specific differences in absolute acid fractionation factor. We show that calcite and dolomite regressions largely agree but are sensitive to sample characteristics, regression method, and how equations are statistically compared. We suggest that there is no need for a dolomite‐specific clumped isotope calibration, although our results suggest that further work is necessary to determine the influence of sample characteristics on this relationship. The apatite calibration equation defined in this study is statistically indistinguishable from calcite‐based calibrations; we corroborate previous findings that an apatite‐specific calibration is unnecessary.

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“…Interpretation: The existence of gypsum and anhydrite with chicken wire structure and felted fabric illustrates a supratidal (sabkha) environment (Butler, 1969;Kendall and Skipwith 1969;Kasprzyk and Orti, 1998). Such conditions are compatible with the warm and arid climate of the Miocene (Tucker, 1999).…”

Section: Depositional Faciesmentioning

confidence: 99%

Platform Evolution in an Oligo–Miocene Back‐arc Basin: An Example from the Central Iran Basin

SHARIFI‐YAZDI,

ENAYATI,

SALEHI AGHDAM

et al. 2024

Acta Geologica Sinica (Eng)

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The Qom Formation is the most important hydrocarbon reservoir target in Central Iran. The Qom platform developed in a back‐arc basin during the Oligo‐Miocene due to the closing of the Tethyan Seaway. This formation consists of a variety of carbonate and non‐carbonate facies deposited on a platform ranging from supratidal to basin. A combination of tectonic and eustatic events led to some lateral and vertical facies variations in the study area. Six third‐order depositional sequences and related surfaces were identified regarding vertical facies changes in the studied sections of this Oligo‐Miocene succession. According to all results and data, this succession was initially deposited during the Chattian upon a distally steepened ramp of siliciclastic‐carbonate composition, including the Bouma sequence. Then, from the late Chattian to the Aquitanian, the platform changed into a homoclinal carbonate ramp with a gentle profile. With respect to tectonic activity, this phase was a calm period during the deposition of the Qom Formation. Finally, a drowned carbonate platform and a rimmed shelf emerged during the Burdigalian, terminated by the continental deposits of the Upper Red Formation. Regarding all geological characteristics, three main tectono‐eustatic evolutionary phases have been recognized in the Qom back‐arc Basin.

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Modern Evaporite Deposition and Geochemistry of Coexisting Brines, the Sabkha, Trucial Coast, Arabian Gulf

Cited by 55 publications

References 0 publications

Precipitation/dissolution of marine evaporites as determinants in groundwater chemistry in a salt marsh (Península Valdés, Argentina)

Precipitation/dissolution of marine evaporites as determinants in groundwater chemistry in a salt marsh (Península Valdés, Argentina)

Re‐Assessing the Need for Apatite‐ and Dolomite‐Specific Calibrations of the Carbonate Clumped Isotope Thermometer

Platform Evolution in an Oligo–Miocene Back‐arc Basin: An Example from the Central Iran Basin

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