Isotope Stratigraphy of Oligocene Limestone in Al-Ain City, United Arab Emirates

Abstract

The rocks of the Oligocene Asmari Formation represent the outer ridges surrounding Jabal Hafit anticline. The carbonate beds of this formation dip gently under the northern and western sides of Al-Ain city. The beds are dissected by several sets of joints and characterized by the abundance of the connected caves of different sizes, particularly in the thick chalky beds. In this study, petrographic and mineralogical studies by X-ray diffraction analysis and scanning electron microscope revealed that the examined carbonate rock samples are made up mainly of calcite and minor of authigenic dolomite and quartz minerals.

Geochemistry and Sr, S, and O stable isotopes of Miocene Abu Dhabi evaporites, United Arab Emirates

“…Over the last three decades, Sr isotope stratigraphy has undergone significant advancements and has proven to be an efficient high-resolution method for sedimentary rock dating and stratigraphic correlation [ [13] , [14] , [15] , [16] ]. It can be used to objectively determine the age of the sulfate deposition (gypsum and anhydrite).…”