Recent Dolomite in the Persian Gulf

Wells, A. J.

doi:10.1038/194274a0

Cited by 95 publications

(33 citation statements)

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“…5 shows the change in the concentrations of calcium and magnesium ions in seawater during evaporation of seawater up to one fourth to fifth of its original volume . Because of separation of calcium sulfate with aragonite during the evaporation process, the concentration ratio of magnesium ions to cal cium ions becomes large in concentrated sea water (ISHIBASHI and MURAKAMI, 195 1 ;SCRUTON , 1953 ;HARADA, 1959;SHIGEMATSU et al, 1964;DEFFEYES et al, 1964;BUTLER , 1969 This suggestion is probably supported by the field observation of primary or secondary protodolomites in the Persian Gulf (WELLS, 1962), in the Coorong area of Australia (ALDERMAN and SKINNER, 1957), in South Oki nawa island (KONISHI et al, 1972) and in Daito island (OHDE et al, 1975. However, in the present synthesis experiment, a large amount of sodium bicarbonate was added enough to the parent solution.…”

Section: Resultsmentioning

confidence: 89%

Synthesis of protodolomite from aqueous solution at normal temperature and pressure.

Ohde

Kitano

1978

Geochem. J.

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To estimate the conditions of the protodolomite formation, laboratory syntheses from simple aqueous solutions have been carried out under normal temperature and pressure conditions. Protodolomites have been synthesized from CaC12 + MgC12 + (NaCI) + NaHC03 solutions. This paper shows the con centrations of calcium and magnesium ions in the parent solution, which are required for the protodolomite formation. The synthesis experiment indicates that concentrated seawater is favorable to the proto dolomite formation. That is, the high value of [Mg2+] / [Ca2+], and the high concentrations of sodium and chlorine ions in a parent solution are favorable to the protodolomite formation.

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Section: Resultsmentioning

confidence: 89%

Synthesis of protodolomite from aqueous solution at normal temperature and pressure.

Ohde

Kitano

1978

Geochem. J.

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“…McQueen of the V. C. Illing Partnership, London), led to a great deal of interest in the Arabian Gulf. The dolomite was found associated with gypsum in the carbonate sediments occurring between normal diurnal tidal and spring tidal levels (Wells, 1962). It was not clear whether the dolomite was primary or replacive.…”

Section: Modern Dolomite Magnesite and Celestitementioning

confidence: 99%

“…The early workers who described the initial diagenetic changes in the sabkha generally seemed to think that these had been produced either by lateral movement of lagoon water into the intertidal sediments, or by lagoon water sinking into the surface after flooding by high tides or storms (Wells, 1962;Curtis et al 1963; Fig. 6A).…”

Section: Water Movement In the Sabkhamentioning

confidence: 99%

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An historical review of the Quaternary sedimentology of the Gulf (Arabian/Persian Gulf) and its geological impact

Evans

2010

Quaternary Carbonate and Evaporite Sedimentary Facies and Their Ancient Analogues

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The Arabian Gulf is a foreland basin that lies between the Arabian Shield and the Zagros fold belt. Today, it is being infilled at its northern head by the Tigris-Euphrates-Karun delta, receives further detrital sediment from Iran on its NE flank, and along its Arabian flank is the site of carbonate and evaporite sedimentation. Other than a few preliminary surveys by officers of the Indian Geological Survey and other minor geological studies associated with archaeological excavations on the Mesopotamian Plains, prior to the 1950s the Quaternary deposits of the region received little attention. However, since the publication of pioneering sedimentological studies in the late 1950s and early 1960s, these sediments have attracted considerable interest. Today, the Arabian Gulf is quoted as a model for foreland basin sedimentation, carbonate evaporite-dune-fan associations and carbonate ramps. It has become a classic area for open-water spontaneous precipitation of calcium carbonate (whitings), formation of hardgrounds, ooid production, dolomite precipitation and, most famously, for the development of shallow-water carbonate-evaporite associations. The surprise discovery of anhydrite forming in the supratidal coastal plain sediments and not in the subaqueous environment of the Gulf had a profound effect on interpretations of ancient evaporites. This discovery caused considerable re-examination and reconsideration of these deposits.

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“…In this place, towards the north-southern direction, the fault goes through the ground. Thus, in this area the difference between morphological levels reaches more than 100 m in some places [15,16]. In the fault zone the rocks section is well visible.…”

Section: Geological Structure Of the Giza Plateaumentioning

confidence: 93%

Petrographic Observations of the Building Stones of the Great Pyramid of Giza

Zalewski¹

2017

JGRE

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This article gives the readers an opportunity to look at the well-known archaeological monument in a different way. The Great Pyramid at Giza has in its four walls triangles that are made of different types of limestone compared the other parts. These triangles were made during the construction of the pyramid. On the top of the northern triangle used to be an entrance to the pyramid. These facts are presented and conscientiously proven in this article. A total of 12 samples from various rocks were taken from the Great Pyramid at Giza to conduct this research, and 13 samples were taken from the bedrock upon which the triangles had been built. This number includes also the samples from the rock in the quarry.

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Recent Dolomite in the Persian Gulf

Cited by 95 publications

References 0 publications

Synthesis of protodolomite from aqueous solution at normal temperature and pressure.

Synthesis of protodolomite from aqueous solution at normal temperature and pressure.

An historical review of the Quaternary sedimentology of the Gulf (Arabian/Persian Gulf) and its geological impact

Petrographic Observations of the Building Stones of the Great Pyramid of Giza

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