Hypersaline environments are among the most vulnerable coastal ecosystems and extremely noteworthy for a variety of ecological reasons. Comprehensive assessment metal(oid) contamination in hypersaline sediments from Sečovlje (Northern Adriatic, Slovenia) was addressed by introducing detrital diagenetic mineralogy geochemical properties within solid sediment material. Close associations between ...

Utilizing sophisticated tools in carbonate rocks is crucial to interpretating the origin and evolution of diagenetic fluids from Upper Jurassic along Zagros thrust-fold Belt. The paleofluids utilizing in-situ strontium isotope ratios by high resolution laser ablation ICP-MS, integrated with stable isotopes, petrography fieldwork are constrained. Due lack information on chemistry fluids, cements...

Diagenetic dissolution of magnetic minerals has been widely observed in organic-rich sediments from many environments. Organic-rich sediments from the eastern Mediterranean Sea (sapropels), recovered during Leg 160 of the Ocean Drilling Program, reveal a surprising catalogue of magnetic properties. Sapropels, from all sites studied across the eastern Mediterranean Sea, are strongly magnetic and...

The purpose of this study is to understand mineral diagenesis authigenic mineral and the effect of climate on mineral of Pleistocene-Holocene sediment deposits in the Southern Kenya Rift. Lake Magadi unique geologic settings are characterized by extreme alkalinity and high silica activities. The mineralogical analysis was achieved by X-Ray diffraction (XRD) and Scanning Electron Microscopy (SEM...

Advances in water chemistry in the last decade have improved our knowledge about the genesis, composition, and structure of dissolved organic matter, and its effect on the environment. Improvements in analytical technology, for example Fourier-transform ion cyclotron (FT-ICR) mass spectrometry (MS), homo and hetero-correlated multidimensional nuclear magnetic resonance (NMR) spectroscopy, and e...

the qom formation, which hosts the mazraeh celestite deposit, contains dominantly limestones, marl and subordinate evaporites deposited in shallow marine environments. petrographic evidence indicates that the celestite deposits were formed by replacement of limestone. the presence of carbonate inclusions within celestite crystals as well as the pseudomorphic habits of some crystals suggests tha...

Round to oval, scalelike siliceous microstructures from cherts in Cambrian limestones of the western Yukon Territory suggest affinity with chrysophycean algae. At least six morphotypes present include porous forms with single branching processes and nonporous oval, ringlike forms. Partially dissolved specimens may indicate a contribution to contemporaneous or early diagenetic chert formation.

While the characteristics and origin of drusy calcite cement in carbonate deposits is well constrained literature, little attention paid to dolomite cement. Petrographic observations, stable isotopes, fluid-inclusion microthermometry suggest that Permo-Triassic conglomerate/breccia dolostone beds northern United Arab Emirates has precipitated as not by dolomitization The low ?18OVPDB (?9.4‰ ?6....

the dehdasht bauxite deposits are located 40 km northeast of dehdasht in kohgilouye and boyer-ahmad province. it is a part of the irano-hymalayan karstic bauxite belt located in the upper part of karstic depressions of santonian-turonian sarvak carbonate formation. the aim of this study is to determine various geneses of pisoliths and prevalent processes in bauxitization. for this purpose, labo...