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بەڕێوەچوونی سمینار

ڕۆژی چوارشەممە ٢٠٢١/٥/٥، کاتژمێر (٩)ی شەو،لە بەردەوامی کار و چالاکییەکانی فاکەڵتییەکەمان، سمینارێک بە ناونیشانی:
  " INTEGRATION OF STABLE ISOTOPES, RADIOMETRIC DATING AND MICROTHERMOMETRY OF SADDLE DOLOMITE AND HOST DOLOSTONES (CRETACEOUS CARBONATES, KURDISTAN, IRAQ): NEW INSIGHTS INTO HYDROTHERMAL DOLOMITIZATION لە لایەن "د. نەمام محمد صالح"  مامۆستای بەشی ئەندازیاری کیمیایی فاکەڵتییەکەمان پێشکەش بە ئامادەبوونی ژمارەیەکی بەرچاو لە مامۆستایان کرا. 

پۆختەی سمینار: 

This wok integrates Mg-, C-, O-, Sr-isotopes, fluid-inclusions microthermometry, and radiometric dating of
dolostones and vug-filling saddle dolomite and calcite of the Upper Cretaceous Bekhme Formation, the Kurdistan
Region of Iraq, provide new insights into the origin, timing and geochemical evolution of hydrothermal dolomitizing
fluids. Similar isotopic compositions and fluid-inclusion microthermometry of the dolostones and saddle
dolomite suggest formation by similar fluids. The U–Pb ages of dolostones and saddle dolomite suggest that
dolomitization (74.8 Ma) was accomplished in 300 Ka at near Earth’s surface by flow of hydrothermal fluids
followed by dolostone dissolution and precipitation of vug-filling saddle dolomite (73.8 Ma). Mg isotopic
compositions of the dolomites (26MgDSM3=􀀀 0.81‰ to 􀀀 0.76‰) are interpreted to indicate derivation of Mg from
marine connate waters entrapped in overpressured basinal mudstones. Relatively high Sr-isotope ratios of the
  dolomites precludes the role of ophiolites as an important source of Mg in the basin.