نتایج جستجو برای: evaporites
تعداد نتایج: 253 فیلتر نتایج به سال:
The Campos and Santos Basins have been a focus of subsurface studies since the discovery in 2006 large accumulations hydrocarbons Early Cretaceous rift post-rift strata below Aptian evaporites. In this study, regional 2D seismic lines, 3D survey well data were interpreted to reconstruct tectono-stratigraphic evolution stages northern sector Basin. Detailed interpretation geological modelling us...
Establishing accurate palaeo-hydroclimatic reconstructions from lacustrine and marine archives is a long-standing challenge in palaeoenvironment studies. Closed-basin evaporites, especially halite, record episodes of extremely arid conditions during rapid climate change. However, the complex limnological behaviour deep hypersaline water bodies stochastic nature hydroclimatic regime its variatio...
Many works in the last decades underline role of evaporites, not just as a conditioning factor but engine for subsidence and eventually basin inversion. The western Mediterranean alpine ranges are being investigated this regard because presence discontinuous units Permian to Triassic deposited Tethys basins. This work presents thorough analysis two particular structures (Cañada Vellida Miravete...
The understanding of hydro systems is great importance in monitoring quantitative and qualitative changes water resources. Essaouira region at the edge Moroccan Atlantic Ocean subject to a semi-arid climate. decrease rainfall as result climate change increase exploitation surface groundwater have disrupted stability these resources threaten socio-economic environmental balance area under invest...
The E-W oriented Sivas foreland basin in Turkey recorded a salinity crisis during the Late Eocene resulting evaporite accumulations thick enough to trigger intense halokinesis Oligo-Miocene. is studied thanks three sedimentological sections crossing transition from last marine deposits (Bözbel Formation) overlying evaporitic facies (Tuzhisar preserved halokinetic deformations. top of Bözbel For...
During the Messinian Salinity Crisis (MSC, 5.97–5.33 Ma), thick evaporites were deposited in Mediterranean Sea associated with major margin erosion. This has been interpreted by most authors as resulting from water level drop evaporation but its timing, amplitude and variations between subbasins are poorly constrained due to uncertainty post-Messinian vertical motions lack of a clear time-corre...
Abstract The first deep-sea drilling expedition in the Mediterranean chanced upon unanticipated discoveries when recovering deeply buried sediments of Late Miocene age that had once accumulated ultra-shallow water and later experienced subaerial exposure. Among these deposits were potassium magnesium chlorides, desiccation cracks, fluvial gravels shale bearing bottom-dwelling diatoms requiring ...
This study provides a comprehensive and quantitative estimate of how global temperatures have changed during the last 540 million years. It combines paleotemperature measurements determined from oxygen isotopes with broader insights obtained changing distribution lithologic indicators climate, such as coals, evaporites , calcretes reefs, bauxite deposits. The waxing waning Earth’s great polar i...
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